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Téma: Jonathan's Space Report
06.4.2019 - 18:43 - 
Jonathan's Space Report
No. 763 2019 Apr 6 Somerville, MA
---------------------------------------------------------------------------------------------

International Space Station
---------------------------

Soyuz MS-12 was launched on Mar 14 carrying Aleksey Ovchinin, Nick Hague and Christina
Koch. It docked with the Rassvet module at 0101:43 UTC Mar 15, beginning ISS Expedition 59.

Progress MS-10 made a 0.7m/s burn to adjust the ISS orbit at 1422 UTC Mar 23.

The new Li-ion batteries delivered by HTV-7 last September on the External Pallet EP7 are finally being installed
in a mixture of robotic (SSRMS/Dextre SPDM) operations and manual work on spacewalks.
EP7 is stored on the POA location on the Mobile Base System.

Here is the chronology of activities (most of you will want to skip this bit!)
Mar 19 SPDM move NiH battery 0070 from P4 truss IEA 4A slot 3 to Dextre's EOTP3 stowage point.
SPDM move NiH battery 0073 from P4 4A slot 1 to EP7 slot X for disposal
SPDM move Li-ion battery 0006 from EP7 slot C to P4 4A slot 3
Unfortunately this battery failed on Mar 22.
Mar 20 SPDM move NiH battery 0074 from P4 4A slot 5 to EP7 slot Z for disposal
SPDM move NiH battery 0069 from P4 4A slot 6 to EP7 slot Y for disposal
SPDM move Li-ion battery 0010 from EP7 slot B to P4 4A slot 5
SPDM move Li-ion battery 0008 from EP7 slot A to P4 4A slot 1
Mar 22 1155? Quest airlock depress, Anne McClain EV1 in EMU 3008, SAFER 13
Nick Hague EV2 in EMU 3003, SAFER 15
1158 Hatch open
1351-1410 Hague move adapter plate 0005 from EP7 slot A to P4 4A slot 6
1355-1452 McClain move adapter plate 0006 from EP7 slot B to P4 4A slot 4
1430-1442 Move NiH battery 0072 from P4 4A slot 4 to adapter 0005 on slot 6
1513-1526 Move NiH battery 0071 from P4 4A slot 2 to adapter 0006 on slot 4
1623-1648 Move adapter plate 0007 from EP7 slot C to P4 4A slot 2
1836 Hatch closed
1840 Repressurized
Mar 26 SPDM move NiH battery 0065 from P4 2A slot 1 to EP7 slot B for disposal
SPDM move NiH battery 0066 from P4 2A slot 3 to EP7 slot A for disposal
Mar 27 SPDM move NiH battery 0068 from P4 2A slot 5 to Dextre
SPDM move Li-ion battery 0003 from EP7 slot D to P4 2A slot 1
SPDM move Li-ion battery 0019 from EP7 slot E to P4 2A slot 5
SPDM move Li-ion battery 0018 from EP7 slot F to P4 2A slot 3
Mar 28 SPDM move NiH battery 0063 from P4 2A slot 6 to EP7 slot C? for disposal
SPDM move NiH battery 0067 from P4 2A slot 4 to Dextre
Mar 29 1137? Quest airlock depress, Nick Hague EV1 in EMU 3006, SAFER 13
Christina Koch EV2 in EMU 3008, SAFER 15
1139 Hatch open
1310 Remove adapter plates 13 and 14 from EP7 slots E and F
1330 Adapter plate 14 (F) installed on P4 2A slot 6
1351 Adapter plate 13 (E) installed on P4 2A slot 4
1419 NiH battery 0064 removed from P4 2A slot 2
1455 NiH battery 0064 installed on adapter plate 13 in 2A slot 4.
1514 Adapter plate 12 (D) removed from EP7 slot D
1529 Adapter plate 12 (D) installed on P4 2A slot 2
1821 Hatch closed
1828 Airlock repressurized
Mar 30 SPDM move NiH battery 0067 from SPDM arm 1? to EP7 slot D?
SPDM move NiH battery 0068 from SPDM arm 2? to EP7 slot E?
I believe NiH battery 0070 is still on the SPDM EOTP.
But I haven't seen any confirmation of this.

On Apr 2, the spare BCDU (Battery Charge/Discharge Unit) which was
launched as part of ELC-1's initial cargo in 2009
was moved from ELC-1 to replace P4 IEA's 4A3 BCDU which is thought to have failed.
On Apr 3, the new-but-failed Li-Ion battery 0006 was removed from P4 4A3 and returned
to the EP7, possibly on slot F?

With these changes, and a few more still to come, the 2A and 4A solar arrays on the
P4 truss are back in action using the new batteries.

The Progress MS-11 cargo ship was launched on Apr 4 and docked with the Pirs module
only 3h20 min after launch.


S5
--

The US Air Force Research Lab's S5 satellite appears to have separated from its
Nusantara Satu host satellite at about 1800 UTC on Mar 4. Part of the Beresheet probe's
adapter structure was jettisoned in the `GEO graveyard' first to allow S5 to emerge.

Orbits of the three GEO objects on Mar 8 were:
44048 Nusantara Satu 35779 x 35791 km x 0.1 deg GEO 145.9E
44065 S5 36053 x 36055 km x 0.1 deg GEO 139.3E+3.3deg W/day
44066 Beresheet adapter 36131 x 36170 km x 0.1 deg GEO 133.2E+4.6deg W/day

ZX-6C
------

China launched the Zhongxing-6C satellite from Xichang on Mar 9. ZX-6C is a C-band
communications satellite using the DFH-4 bus. By Mar 19 the satellite was
on station in GEO at 129.9E.

WGS-10
------

The US Air Force communications satellite Wideband Global Satcom 10 was launched
on Mar 16 by a Delta 4 Medium from Cape Canaveral into a supersynchronous transfer
orbit. The Boeing-built spacecraft carries X- and Ka-band communications payloads
and has both bipropellant and electric propulsion systems.
The orbital data for WGS satellites were declassified last year; it's nice to
see public TLE data flowing for the new satellite. By Mar 22 it was in
a 13246 x 45069 km x 5.3 deg orbit.

PRISMA
------

The Italian Space Agency's PRISMA imaging satellite was launched by an
Arianespace Vega on Mar 22. Its 0.21m aperture telescope has a
hyperspectral detector with high spectral resolution near infrared and
visible imaging.

Beresheet
---------

The SpaceIL Beresheet probe (I'm told "B'reshit" is a better
transliteration from the Hebrew) has made a further orbit raising burn
for translunar injection. The 60 second perigee burn at 1230 UTC Mar 19
raised apogee beyond the Moon to 405 000 km. It entered an estimated
400 x 10000 km lunar orbit on Apr 4, with a 324m/s burn starting at 1418
UTC and lasting 350s.

Kicksat-2
---------

The Kicksat-2 cubesat, developed by Zac Manchester (Stanford U.) and
funded on Kickstarter, deployed at least some of its circa 104 Sprite
chipsats on Mar 19 at 0340 UTC, as the satellite orbited over the
eastern Pacific southwest of California. Cees Bassa detected radio
signals from some of the Sprites. There are no US satellite catalog
entries for them. Their area-to-mass ratio is rather high, so they are
strongly affected by drag, and Manchester reports that they are expected
to have reentered within a few days.


Microsat-R
----------

On Mar 27 India's Defense Research Development Organization (DRDO) launched the first PDV Mk II
antisatellite interceptor from Kalam Island. After a three minute flight the missile collided
with the 740 kg Microsat-R satellite in LEO. Microsat-R was in a 260 x 282 km x 96.6 deg orbit
at the time, travelling north over the Bay of Bengal; PDV-II flew south from Orissa to intercept
it. PDV-II is reported to be a three stage vehicle - two solid boost stages and a kill vehicle
with liquid-propellant terminal guidance thrusters.

As of Mar 31 US authorities were reporting over 250 debris pieces detected. On Apr 5, 57 of them
were publicly cataloged, 13 showing apogees over 1000 km.

PSLV-C45
--------

India launched PSLV-C45 from Sriharikota on Apr 1. This was the first launch of
the PSLV-QL variant which has 4 strapon boosters, and the first time the PS4
upper stage carried solar panels to support long-term in-orbit attached payloads.

The main payload was EMISAT, a signals intelligence satellite for the Indian
defense research agency DRDO.

Cubesats on PSLV-C45 include: BlueWalker 1, a test IoT data relay
satellite for Avellan Space Technology and Science of Midland, Texas
built by NanoAvionics of Vilnius, whose own test satellite, M6P, is also
aboard; Astrocast 0.2 is another IoT test satellite for Astrocast of
Lausanne. Danu Pathfinder 1 is the third in the AISTECHSAT series of
ship tracking satellites from AistechSpace of Barcelona. Four Lemur-2
satellites for SpireGlobal are aboard, and twenty Planet cubesats
in the improved Flock 4 series.

Preliminary data suggest that (1) the final burn of the PS4 stage
may have been retrograde instead of posigrade, leading to an elliptical
rather than circular final orbit and (2) two of the satellite deployments
inadvertently occured only after this burn, leaving them in the PS4's
orbit rather than the higher target one.


R3D2
----

RocketLab launched the fifth Electron on Mar 28, carrying the DARPA R3D2
(Radio-frequency Risk Reduction Deployment Demonstration) satellite.
R3D2 is a 150 kg Northrop Grumman satellite with a 2.3m diameter
deployable lightweight antenna.

TL2-01
------

China launched the first of its second-generation tracking and data relay satellites on Mar 31.
Tianlian-2 sat 01 (Tianlian erhao 01 xing) is a CAST DFH-4. The TL2 series will replace the four
TL1 sats already in orbit:

Satellite Launch date Current GEO Location Location History
Tianlian-1 01 xing 2008 Apr 25 Indian O. Backup 80E 77E (2008-2013); 80E (2013-2019)
Tianlian-1 02 xing 2011 Jul 11 Pacific 167E 177E (2011-2013); 167E (2013-2016)
171E (2016) 177E (2016-Jan 2019) 167E (2019)
Tianlian-1 03 xing 2012 Jul 25 Africa 17E 17E (2012-2016); 20E (2016); 10.5E (2016-Jan 2019); 17E (2019)
Tianlian-1 04 xing 2016 Nov 22 Indian Ocean 77E 77E (2016-2019)
Tianlian-2 01 xing 2019 Mar 31 TBD

As of Apr 6, geotransfer orbit TLEs for TL2-01 had stopped on Apr 1; this suggests it made an
apogee maneuver on that date but has not yet been located by US tracking in GEO. TL2-01's
apogee at 0800 UTC Apr 1 was at around 114E.


O3B
----

The final four satellites in the first-generation SES O3b constellation were launched
from French Guiana on Apr 4 on a Soyuz/Fregat to medium equatorial Earth orbit. The O3b satellites
provide broadband internet to developing countries.

Hayabusa-2
-----------

At 0400 UTC on Apr 4 Haybusa 2 began another descent from its 20 km home
point towards the surface of Ryugu. At an altitude of 500m, at 0156 UTC
Apr 5, it ejected the SCI (Small Carry-On Impactor), a 14 kg vehicle
with a 5 kg explosive shaped charge and a 2 kg copper mass. Hayabusa-2
then performed an avoidance burn to head off several km to the side of
the asteroid, over the horizon from the SCI location. Early in this
retreat, at 0214 UTC, it ejected the DCAM-3 camera package. At 0236 UTC
the SCI detonated, propelling the copper payload into the asteroid with
the intention of creating a new crater. DCAM-3 imaged this operation and
relayed the data to the main spacecraft. Hayabusa-2 will image Ryugu
from a safe distance and search for the resulting crater, before
returning to its 20 km home point on around Apr 20. The plan is to then
make a further descent to sample the freshly exposed material in the new
crater.


Erratum
-------
In JSR 760 I said that Progress MS-10 did a reboost on Dec 2; this should have read Dec 27
(with further reboosts Jan 18 and Feb 26).


Table of Recent Orbital Launches
----------------------------------
Date UT Name Launch Vehicle Site Mission INTL. Catalog Perigee Apogee Incl Notes

Feb 1? SeeMe? EXCITE, LEO Imaging 99BS S43822 571 x 594 x 97.8 1017LT SSO
Feb 5 Dousti Safir Semnan Imaging F02 F01533 -6000?x 10?x 55.0
Feb 5 2101 Saudi Geosat 1 ) Ariane 5ECA Kourou ELA3 Comms 07A S44034 242 x 35770 x 3.0
GSAT-31 ) Comms 07B S44035 245 x 35841 x 3.0
Feb 9 0000 Quantum Radar 1 ) Cygnus NG10,LEO Tech 18092C S44041 455 x 459 x 51.6
Quantum Radar 2 ) Tech 18092D S44042 457 x 457 x 51.6
Feb 13 1200 MySat-1 ) Cygnus NG10,LEO Tech 18092E S44044? 455 x 471 x 51.6
CHEFSAT-2 ) Tech 18092F S44045? 455 x 471 x 51.6
Feb 13 2245 Kicksat-2 Cygnus NG10,LEO Tech 18092G S44046 297 x 306 x 51.6
Feb 21 1647 EgyptSat-A Soyuz-2-1b/Fregat Baykonur LC31 Imaging 08A S44047 652 x 656 x 98.0 0950LT SSO
Feb 22 0145 Nusantara Satu ) Falcon 9 Canaveral SLC40 Comms 09A S44048 35779 x 35791 x 0.1
Beresheet ) Lunar probe 09B S44049 242 x 68845 x 27.6
Feb 27 2137 OneWeb-0006 ) Soyuz ST-B/Fregat CSG ELS Comms 10E S44061 984 x 1007 x 87.8
OneWeb-0007 ) Comms 10D S44060 984 x 1007 x 87.8
OneWeb-0008 ) Comms 10C S44059 985 x 1009 x 87.8
OneWeb-0010 ) Comms 10B S44058 986 x 1010 x 87.8
OneWeb-0011 ) Comms 10F S44062 987 x 1005 x 87.8
OneWeb-0012 ) Comms 10A S44057 985 x 1010 x 87.8
Mar 2 0749 Crew Dragon DM-1 Falcon 9 Kennedy LC39A Spaceship 11A S44063 235 x 351 x 51.6
Mar 4 1800? S5 Nus.Satu, GEO Imaging 09D? S44065? 36043 x 36055 x 1.0
Mar 9 1628 Zhongxing 6C Chang Zheng 3B Xichang LC3 Comms 12A S44067 181 x 40603 x 24.6
Mar 14 1914 Soyuz MS-12 Soyuz-FG Baykonur LC1 Spaceship 13A S44069 406 x 411 x 51.6 Docked ISS
Mar 16 0026 WGS 10 Delta 4M+(5,4) Canaveral SLC37B Comms 14A S44071 462 x 44261 x 27.0
Mar 19 0340 Sprite (00,01) ] Kicksat-2, LEO Tech 18092H 251 x 261 x 51.6
Sprite (02,03) ] Tech 18092J 251 x 261 x 51.6
.... ] [104 satellites]
Sprite (206,207)] Tech 18092DQ 251 x 261 x 51.6
Mar 22 0150 PRISMA Vega CSG ELV Imaging 15A S44072 617 x 620 x 97.9 1030LT SSO
Mar 27 0939? Linqgue 1A OS-M1 Jiuquan Tech F03 F01537 -6300?x 10?x 98?
Mar 28 2327 R3D2 Electron Mahia Tech 16A S44073 421 x 438 x 39.5
Mar 31 1551 TianLian 2-01 Chang Zheng 3B Xichang Comms 17A S44076 200 x 35817 x 27.1
Apr 1 0357 EMISAT ) PSLV-QL Satish Dhawan SLP Sigint 18A S44078 736 x 758 x 98.4 0930LT SSO
BlueWalker 1 ) IoT Comms 18AD S44105 434 x 515 x 97.5
M6P ) IoT Comms 18AF S44109 434 x 515 x 97.5
Astrocast-0.2 ) IoT Comms 18F S44083 494 x 510 x 97.5
Danu Pathfinder 1 ) AIS Comms 18AB S44103 490 x 507 x 97.5
Lemur-2-JohanLoran ) AIS/ADS-B/Met 18G S44084 494 x 510 x 97.5
Lemur-2-Beaudacious ) AIS/ADS-B/Met 18H S44085 493 x 510 x 97.5
Lemur-2-Elham ) AIS/ADS-B/Met 18J S44086 493 x 510 x 97.5
Lemur-2-Victor-Andrew) AIS/ADS-B/Met 18K S44087 493 x 510 x 97.5
Flock 4a-1/ Dove 2218) Imaging 18B S44079 494 x 510 x 97.5
Flock 4a-2/ Dove 2201) Imaging 18C S44080 494 x 510 x 97.5
Flock 4a-3/ Dove 2206) Imaging 18D S44081 494 x 510 x 97.5
Flock 4a-4/ Dove 2220) Imaging 18E S44082 494 x 510 x 97.5
Flock 4a-5/ Dove 2227) Imaging 18T S44095 493 x 507 x 97.5
Flock 4a-6/ Dove 220b) Imaging 18S S44094 494 x 507 x 97.5
Flock 4a-7/ Dove 222d) Imaging 18R S44093 494 x 507 x 97.5
Flock 4a-8/ Dove 2213) Imaging 18Q S44092 494 x 507 x 97.5
Flock 4a-9/ Dove 2224) Imaging 18W S44098 493 x 507 x 97.5
Flock 4a-10/Dove 2205) Imaging 18V S44097 493 x 507 x 97.5
Flock 4a-11/Dove 2223) Imaging 18U S44096 493 x 507 x 97.5
Flock 4a-12/Dove 2209) Imaging 18AE S44108 494 x 507 x 97.5
Flock 4a-13/Dove 220c) Imaging 18AA S44102 492 x 507 x 97.5
Flock 4a-14/Dove 222c) Imaging 18Z S44101 492 x 507 x 97.5
Flock 4a-15/Dove 2207) Imaging 18Y S44100 493 x 507 x 97.5
Flock 4a-16/Dove 222b) Imaging 18X S44099 493 x 507 x 97.5
Flock 4a-17/Dove 2212) Imaging 18L S44088 493 x 510 x 97.5
Flock 4a-18/Dove 2215) Imaging 18M S44089 493 x 510 x 97.5
Flock 4a-19/Dove 2235) Imaging 18N S44090 493 x 510 x 97.5
Flock 4a-20/Dove 2232) Imaging 18P S44091 493 x 510 x 97.5
AISAT-1/PSLV-C45-PS4 Tech/Comms 18AC S44104 435 x 515 x 97.5
Apr 4 1101 Progress MS-11 Soyuz-2-1A Baykonur LC31 Cargo 19A S44110 407 x 411 x 51.6
Apr 4 1703 O3b FM17 ) Soyuz ST-B/Fregat CSG ELS Comms 20A S44112 7809 x 7839 x 0.0
O3b FM18 ) Comms 20B S44113 7818 x 7839 x 0.0
O3b FM19 ) Comms 20C S44114 7830 x 7840 x 0.0
O3b FM20 ) Comms 20D S44115 7839 x 7841 x 0.0
Apr 5 0156 SCI Hayabusa-2, Ryugu space Weapon 14076 D00957 Ryugu impact
Apr 5 0214 DCAM-3 Hayabusa-2, Ryugu space Imaging 14076 D00958 Ryugu space

Table of Recent Suborbital Launches
-----------------------------------


Date UT Payload/Flt Name Launch Vehicle Site Mission Apogee/km Target

Feb 6 0701 Mk 21 RV/FTU-1 Minuteman 3 Vandenberg Test 1300? Pacific Ocean
Feb 6 0831 Yars RV Yars Plesetsk Test 1300? Kura
Feb 22 1654 VSS Unity VF-01 Spaceship Two Kelso Valley Test 89.9 Mojave
Mar 11 0920 REXUS 25 Imp. Orion Kiruna Micrograv 82 ESRANGE
Mar 19 0940 REXUS 26 Imp. Orion Kiruna Micrograv 80 ESRANGE
Mar 25 1720? FTG-11 Target ICBM-T2? Kwajalein Target 1000? Pacific Ocean
Mar 25 1730? FTG-11 KV 1 GBI Vandenberg LF23? Interceptor 1000? Intercept
Mar 25 1730? FTG-11 KV 2 GBI Vandenberg LF05? Interceptor 1000? Intercept
Mar 27 0540 Mission Shakhti PDV-II Kalam Island ASAT 270? Intercept
Apr 5 2214 AZURE 1 Black Brant XIA Andoya Auroral 320 Norwegian Sea
Apr 5 2214 AZURE 2 Black Brant XIA Andoya Auroral 320 Norwegian Sea
 
11.5.2019 - 17:59 - 


Jonathan's Space Report
No. 764 2019 Apr 30 Somerville, MA
---------------------------------------------------------------------------------------------

International Space Station
---------------------------

Correction to previous description of battery work: the new-but-failed battery
that was removed on Apr 3 was the one in channel 4A3 slot 5, not the one in slot 3.
On Apr 5 the SPDM moved NiH battery 0072 from AP005 on P4 IEA 4A slot 6 to slot 5.

On Apr 8 McClain and St-Jacques performed spacewalk EVA 54. The airlock was
depressurized by about 1125 UTC with hatch open at 1126 and the suits on battery
power at 1131. At 1229 the adapter plate removed from 4A slot 6 and placed on
top of the plate in slot 2 at 1240 UTC. This opens up slot 6 for one of the old
batteries.

The spacewalkers then carried out cabling to provide external wireless support and
backup power to Canadarm-2. The airlock was repressurized at 1800 UTC.

On Apr 11 the SPDM moved NiH battery 0069 from EP7 slot Y to the newly empty
slot 6 on P4 4A. Then, battery 0070 was moved from the Dextre EOTP to slot Y.

So the 4A side has the following right now:
Slot 1 Li-ion 15? Slot 2 Adapter 07 + Adapter 05
Slot 3 Li-ion 17? Slot 4 Adapter 06 + NiH 0071
Slot 5 NiH 0072 Slot 6 NiH 0069

On Apr 17 the 10th Antares rocket took off from the Mid-Atlantic
Regional Spaceport at Wallops Island, placing Cygnus NG-11 (the S.S.
Roger Chaffee) in low orbit at 2053 UTC and separating from the payload
at 2055 UTC. The Chaffee reached the ISS on Apr 19, with SSRMS
grapple at 0928 UTC and berthing on Unity nadir at about 1130 UTC.

The NG-11 mission carries a large number of nanosatellites hosted on a
variety of dispenser systems.

Four Planetary Systems Corp. CSD 3U deployers were attached to the
Antares second stage, and ejected their payloads, SASSI2 and 12
ThinSats, at 2059 UTC Apr 17. Unusually, the payloads were not
cataloged by US space tracking, and were expected to have reentered by
around Apr 24.


SASSI-2 (Student Aerothermal Spectrometer Satellite of Illinois and Indiana,
correctly written as SASSI-superscript-2) is a 3U cubesat from the University
of Illinois to study the diffuse bow shock of a satellite in low orbit.

The ThinSats are a new design from NearSpaceLaunch for the Virginia Commercial
Space Flight Authority and carry student experiments. Twelve Thinsats were
deployed. Each is made of a number of Thinsat cases 0.01 x 0.11 x 0.11m in size
connected by solar panel ribbons 0.30m long 0.05m wide. The satellites are
launched folded up and deploy after ejection in an accordion-like fashion.
The twelve satellites include:
Three Thinsat 3T (1B,1G,1K), consisting of three Thinsat cases connected by two ribbons.
Overall mass 1 kg, size 0.01 x 0.1 x 1.3m.

Six Thinsat 6T (1C,1D,1F,1H,1J,1L), consisting of six Thinsat cases connect by five ribbons.
Overall mass 2 kg, size 0.01 x 0.1 x 2.7m

Three Thinsat D+4T (1A, 1E, 1I), consisting of five Thinsat cases (one of them a double-width
0.03 x 0.11 x 0.11m case) connected by 4 ribbons. Overall mass 2 kg, size (0.01-0.03) x 0.1 x 2.2m.

The JAXA J-SSOD No. 11 dispenser will be delivered to the Kibo module for later deployment.
It contains three 1U cubesats developed by Kyushu Tech students:
Uguisu, for Kyushu Tech
Raavana-1, for the Arthur C. Clarke Institute for Modern Technologies, Moratuwa, Sri Lanka;
Nepalisat-1, for the Nepal Academy of Space Technology, Kathmandu.

The Nanoracks NRCSD-16 payload will also be delivered to the Kibo module for later deployment.
It includes:
Aeternitas (1U, Old Dominion University, Virginia);
Libertas (1U, University of Virginia);
Ceres (1U, Virginia Polytechnic);
KRAKsat (1U, Kraksat team and Akademia Gorniczo-Hutnicza, Krakow, Poland) with
a ferrofluid attitude control system experiment.
Swiatowid (2U, SatRevolution, Wroclaw, Poland), with a 4m res Earth imager.
IOD-1 GEMS, Orbital Microsystems (Boulder, Colorado and Harwell, UK; 3U from ClydeSpace),
with a passive microwave weather sensor.
EntrySat (2U from Institut superieur de l'aeronautique et de l'espace, Toulouse), to study
the atmospheric reentry environment.

The Nanoracks NRCSD-E mission 7 is attached to the Chaffee's service module.
Its payloads are:
Aerocube-10a, a 1.5U cubesat from the Aerospace Corp containing
29 small subsatellites (AC-10a Probe 01 to 29), each 0.016 kg and 0.1m in diameter,
which will be ejected to serve as radar targets to study atmospheric density.
AC-10a also has an optical beacon to serve as a target for AC-10b.

Aerocube-10b, a 1.5U cubesat with a steam thruster, to carry out proximity
manuevering near AC-10a.

Seeker, a 3U cubesat from NASA JSC to serve as an inspector satellite maneuvering
in the vicinity of the Chaffee.

Kenobi, a 3U cubesat from NASA JSC which will remain attached to the NRCSD-E and
will relay data from Seeker.

Finally, the SEOPS LLC Slingshot system will be attached to the Chaffee before it
departs ISS, and will deploy further cubesats whose identities have not yet been
revealed. These cubesats will be delivered to ISS on the next Dragon.


PSLV
-----

It has now been confirmed that the two NanoAvionics cubesats M6P and
BlueWalker-1 were ejected into the wrong orbit (435 x 514 km instead of
493 x 510 km), probably due to a deployment hang-up delaying the
ejection until after the final PSLV-PS4 burn.

Arabsat 6A
-----------

The Arabsat 6A communications satellite was launched by the first operational
Falcon Heavy on Apr 11. The two side cores landed back at Cape Canaveral
and the center core landed downrange on the OCISLY droneship. The second
stage carried on to parking orbit and then after a second burn
to highly elliptical supersynchronous transfer orbit of 324 x 90078 km x 23.0 deg
By Apr 26 the satellite was in a 36074 x 89938 km x 1.3 deg, ready to lower
apogee to GEO.

During the voyage back to port the core stage toppled over onto the deck
of the OCISLY and was partly destroyed.



B'reshit
--------

The SpaceIL lunar lander made several orbit circularization burns from Apr 4 to Apr 10.
On Apr 6 apogee was lowered from 10000 km to 750 km; on Apr 8 at 0548 UTC
the orbit was reduced to 211 x 467 km, and on Apr 10 about 1700 UTC to 16 x 200 km.
On Apr 11 at 1912 UTC B'reshit began its landing burn, but after failure
of an IMU the main engine cut off. It was restarted too late to save the landing,
with impact (possibly near 18E 32N) at 1923 UTC Apr 11.

Beidou
------

China launched a new Beidou 3 satellite on Apr 20 to geostationary transfer orbit.
It reportedly was planned to enter an inclined GEO at 55 degrees, with apogee
burn apparently on Apr 21, but as of Apr 30 the satellite had not been tracked
in its new orbit.

Tianhui-2 Group 1
-----------------

On Apr 29 China launched two new mapping satellites, Tianhui-2 01 zu 01
xing and Tianhui-2 01 zu 02 xing, into a 0600 local time descending node
sun-synchronous orbit. The vehicle was launched at 2252 UTC and entered
orbit around 2305 UTC; After payload separation the third stage made a
perigee-lowering burn at 2311 UTC.

Hammaguir
---------

From 1952 to 1967, France's main space launch site was the CIEES (Centre
Interarmees d'Essais d'Engins Speciaux) B2 site at Hammaguir, Algeria.
(The older CIEES B0 and CIEES B1 were at Colomb-Bechar to the northeast,
and were used for small military missile tests). Until 2015, as far as I
can tell, no map of the CIEES B2 had been publicly available. The French
space agency CNES then released a 1965 map for the 2015 celebrations of
the anniversary of the first French satellite launch. Thanks to this,
which I just became aware of (courtesy of @syncloss on twitter), it is
now possible to identify the locations of the launch pads at CIEES B2.

Launch area Rockets

Blandine 30.8591N 3.0850W Veronique, Vesta
Bacchus 30.8497N 3.0691W Centaure, Dragon, Belier, Antares
Brigitte (Agate pad) 30.7782N 3.0566W Agate, Topaze, Rubis
Brigitte (Diamant pad) 30.7782N 3.0539W Emeraude, Saphir, Diamant
Beatrice 30.7986N 3.0154W Cora




Table of Recent Orbital Launches
----------------------------------
Date UT Name Launch Vehicle Site Mission INTL. Catalog Perigee Apogee Incl Notes

Apr 1 0357 EMISAT ) PSLV-QL Satish Dhawan SLP Sigint 18A S44078 736 x 758 x 98.4 0930LT SSO
BlueWalker 1 ) IoT Comms 18AD S44105 434 x 515 x 97.5
M6P ) IoT Comms 18AF S44109 434 x 515 x 97.5
Astrocast-0.2 ) IoT Comms 18F S44083 494 x 510 x 97.5
Danu Pathfinder 1 ) AIS Comms 18AB S44103 490 x 507 x 97.5
Lemur-2-JohanLoran ) AIS/ADS-B/Met 18G S44084 494 x 510 x 97.5
Lemur-2-Beaudacious ) AIS/ADS-B/Met 18H S44085 493 x 510 x 97.5
Lemur-2-Elham ) AIS/ADS-B/Met 18J S44086 493 x 510 x 97.5
Lemur-2-Victor-Andrew) AIS/ADS-B/Met 18K S44087 493 x 510 x 97.5
Flock 4a-1/ Dove 2218) Imaging 18B S44079 494 x 510 x 97.5
Flock 4a-2/ Dove 2201) Imaging 18C S44080 494 x 510 x 97.5
Flock 4a-3/ Dove 2206) Imaging 18D S44081 494 x 510 x 97.5
Flock 4a-4/ Dove 2220) Imaging 18E S44082 494 x 510 x 97.5
Flock 4a-5/ Dove 2227) Imaging 18T S44095 493 x 507 x 97.5
Flock 4a-6/ Dove 220b) Imaging 18S S44094 494 x 507 x 97.5
Flock 4a-7/ Dove 222d) Imaging 18R S44093 494 x 507 x 97.5
Flock 4a-8/ Dove 2213) Imaging 18Q S44092 494 x 507 x 97.5
Flock 4a-9/ Dove 2224) Imaging 18W S44098 493 x 507 x 97.5
Flock 4a-10/Dove 2205) Imaging 18V S44097 493 x 507 x 97.5
Flock 4a-11/Dove 2223) Imaging 18U S44096 493 x 507 x 97.5
Flock 4a-12/Dove 2209) Imaging 18AE S44108 494 x 507 x 97.5
Flock 4a-13/Dove 220c) Imaging 18AA S44102 492 x 507 x 97.5
Flock 4a-14/Dove 222c) Imaging 18Z S44101 492 x 507 x 97.5
Flock 4a-15/Dove 2207) Imaging 18Y S44100 493 x 507 x 97.5
Flock 4a-16/Dove 222b) Imaging 18X S44099 493 x 507 x 97.5
Flock 4a-17/Dove 2212) Imaging 18L S44088 493 x 510 x 97.5
Flock 4a-18/Dove 2215) Imaging 18M S44089 493 x 510 x 97.5
Flock 4a-19/Dove 2235) Imaging 18N S44090 493 x 510 x 97.5
Flock 4a-20/Dove 2232) Imaging 18P S44091 493 x 510 x 97.5
AISAT-1/PSLV-C45-PS4 Tech/Comms 18AC S44104 435 x 515 x 97.5
Apr 4 1101 Progress MS-11 Soyuz-2-1A Baykonur LC31 Cargo 19A S44110 407 x 411 x 51.6
Apr 4 1703 O3b FM17 ) Soyuz ST-B/Fregat CSG ELS Comms 20A S44112 7809 x 7839 x 0.0
O3b FM18 ) Comms 20B S44113 7818 x 7839 x 0.0
O3b FM19 ) Comms 20C S44114 7830 x 7840 x 0.0
O3b FM20 ) Comms 20D S44115 7839 x 7841 x 0.0
Apr 5 0156 SCI Hayabusa-2, Ryugu space Weapon 14076 D00957 Ryugu impact
Apr 5 0214 DCAM-3 Hayabusa-2, Ryugu space Imaging 14076 D00958 Ryugu space
Apr 11 2235 Arabsat 6A Falcon Heavy Kennedy LC39A Comms 21A S44186 320 x89807 x 23.0
Apr 17 2046 S.S. Roger Chaffee ) Antares 230 MARS LA0B Cargo 22A S44188 285 x 380 x 51.6
SASSI-2 ) Science 22C? A09407 201 x 291 x 51.6
ThinSat 1A ) Tech 22D? A09408 201 x 291 x 51.6
ThinSat 1B ) Tech 22E? A09409 201 x 291 x 51.6
ThinSat 1C ) Tech 22F? A09410 201 x 291 x 51.6
ThinSat 1D ) Tech 22G? A09411 201 x 291 x 51.6
ThinSat 1E ) Tech 22H? A09412 201 x 291 x 51.6
ThinSat 1F ) Tech 22J? A09413 201 x 291 x 51.6
ThinSat 1G ) Tech 22K? A09414 201 x 291 x 51.6
ThinSat 1H ) Tech 22L? A09415 201 x 291 x 51.6
ThinSat 1I ) Tech 22M? A09416 201 x 291 x 51.6
ThinSat 1J ) Tech 22N? A09417 201 x 291 x 51.6
ThinSat 1K ) Tech 22P? A09418 201 x 291 x 51.6
ThinSat 1L ) Tech 22Q? A09419 201 x 291 x 51.6
Apr 20 1441 Beidou DW44 Chang Zheng 3B Xichang Navigation 23A S44205 193 x35788 x 28.5
Apr 29 2252 Tianhui-2 01 zu 01 xing ) Chang Zheng 4B Taiyuan Imaging 24A S44207 506 x 517 x 97.4 0600LT SSO
Tianhui-2 01 zu 02 xing ) Imaging 24B S44208 506 x 517 x 97.4 0600LT SSO

Table of Recent Suborbital Launches
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Date UT Payload/Flt Name Launch Vehicle Site Mission Apogee/km Target

Apr 5 2214 AZURE 1 Black Brant XIA Andoya Auroral 320 Norwegian Sea
Apr 5 2216 AZURE 2 Black Brant XIA Andoya Auroral 320 Norwegian Sea
Apr 11 1651 CLASP 2 Black Brant IX White Sands Solar UV 274 White Sands

 
 


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