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Jonathan's Space Report 
No. 765 draft                                                 2019 May 1  Somerville, MA
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JSR 764 is now permalinked at http://planet4589.org/space/jsr/back/news.764.txt


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

Cygnus NG-11 remains at the ISS.

On May 1-2 the Canadarm-2 and Dextre arms were used to replace a failed Main Bus Switching
Unit on the ISS S0 truss. The failed MBSU supported the channel 3 solar arrays.
It was exchanged with an MBSU on External Stowage Platform 2. This replacement unit was originally
the channel 2 MBSU, which failed in 2017, was brought inside ISS, repaired, and replaced on ESP-2.
There are 7 MBSUs on ISS:

   Launch order   Launch year   Current role
   MBSU 1         2002          Failed, on ELC-2 since 2013
   MBSU 2         2002          Active as MBSU-3 since 2019
   MBSU 3         2002          Failed, on ESP-2 since 2019
   MBSU 4         2002          Active as MBSU-4 since 2002
   MBSU 5         2005          Active as MBSU-2 since 2017
   MBSU 6         2007          Active as MBSU-1 since 2012
   MBSU 7         2013          Spare on ESP-2 since 2013


On May 4 SpaceX launched Dragon CRS-17 towards the Station. The CRS-17 trunk carries
OCO-3, a carbon measuring experiment, and STP-H6, with a set of USAF Space Test Program
experiments. STP-H6's experiments include XCOM, an X-ray transmitter which will carry
out communications experiments using the ISS NICER X-ray observatory as a receiver -
giving a whole different meaning to "X-band". 

Electron
--------

On May 5 Rocket Lab launched Electron mission 6, nicknamed 'That's A Funny Looking Cactus'.
The payload was USAF Space Test Program mission STP-27RD, consisting of the 150 kg
Harbinger satellite and two cubesats.

Harbinger is a small imaging radar satellite built by York Space Systems (Denver)
and will carry out a mission for the US Army Space and Missile Defense Command.

SPARC-1 (Space Plug-and-Play Architecture Cubesat)  is a 6U mission from
the USAF Research Lab and the Swedish defense agency FMV, testing
advanced computing hardware in space.

The Falcon Orbital Debris Experiment (Falcon-ODE) 1U cubesat from the USAF Academy, will release
2cm and 4cm steel spheres to act as tracking targets.


Beidou DW45
-----------

The 45th Beidou satellite was  Beidou-2 G8, a replenishment satellite for the older Beidou phase 2
system. It was launched to geotransfer orbit on May 17.

RISAT-2B
--------

India's RISAT-2B radar imaging satellite was launched on May 22. It replaces the Israeli-built 
RISAT-2, launched in 2009. Mass of RISAT-2B is 615 kg.

Yaogan-33
---------

The launch of China's Yaogan-33 radar satellite on May 23 was a failure. The third stage burn
was not performed successfully and the vehicle did not reach orbit.


Starlink
--------

SpaceX launched its first batch of 60 Starlink satellites on May 24. 
The Falcon 9 rocket placed the satellites in a 434 x 442 km x 53.0 deg.
Each one is about 200-250 kg (the press kit says 227 kg, but this is
suspiciously close to the metric equivalent of 500 pounds, so it's
possible they really mean 500+-50 lb = 227 +- 23 kg). The satellites are
a flat panel with krypton-propellant electric thrusters and a single
deployable solar panel.

Observers in Europe saw the satellites as a spectacular string of mag 2
to 3 objects a few hours after launch.


Erratum
-------

IOD-1 GEMS is owned by Satellite Applications Catapult Ltd., although
built by Orbital Microsystems and ClydeSpace. Catapult has a ground
station at Goonhilly in Cornwall, site of the first transatlantic satcom
link.


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
May  4 0648   Dragon CRS-17              Falcon 9         Canaveral SLC40  Cargo      25A   S44222   204 x  382 x  51.6
May  5 0600   Harbinger )                Electron         Mahia LC1        Radar      26E   S44229   484 x  512 x  40.0
              SPARC-1   )                                                  Tech       26B   S44226   493 x  511 x  40.0
              AFOTEC-1  )                                                  Cal        26A   S44225   496 x  511 x  40.0
May 17 1548   Beidou DW45                Chang Zheng 3C   Xichang LC2      Navigation 27A   S44231   198 x35743 x  19.4
May 22 0000   RISAT-2B                   PSLV-CA         Satish Dhawan FLP Radar      28A   S44233   550 x  558 x  37.0
May 22 2249   Yaogan 33                  Chang Zheng 4C   Taiyuan          Radar      F04   F01439  -6000?x 500?x  97.8?
May 24 0230   Starlink 01 )              Falcon 9         Canaveral SLC40  Comms      29A   S44235   434 x  443 x  53.0
              Starlink 02 )
              ...         )
              Starlink 60 )

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

Sandia National Labs launched two Terrier Malemute rockets with technology payloads in April,
according to T. Rummler from Sandia.

The Trident II test on May 9 sent its reentry vehicles into the South Atlantic Ocean off the
coast of Namibia.

The University of Southern California's student rocket group RPL flew a rocket called Traveler IV
to 103 km on Apr 21, a record apogee for a student built rocket.


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
Apr 21        Traveler IV       Traveler           Spaceport America     Test          103       Spaceport America
Apr 23        HOT SHOT 2        Terrier Malemute   Kauai                 Tech          320?      Pacific
Apr 24        HOT SHOT 3        Terrier Malemute   Kauai                 Tech          320?      Pacific
May  1 0942   GT230GM           Minuteman III      Vandenberg LF10       Op Test      1300?      Kwajalein
May  2 1334?  New Shepard NS-12 New Shepard        West Texas            Test          105       West Texas
May  3 2045   Momo TF-3         Momo               Taiki                 Test          118       Pacific Ocean
May  9 0740   GT229GM           Minuteman III      Vandenberg LF09       Op Test      1300?      Kwajalein
May  9        DASO-29           Trident II D-5    USS Rhode Island, ETR  Op Test      1000?      S Atlantic
May 23        Shaheen II RV     Shaheen II         Somniani?             Op Test       300?      Arabian Sea   


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