TESS

 2018-038A

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Transiting Exoplanet Survey Satellite. MIDEX Explorer. All sky survey. Search for targets for JWST. OATK Leostar-2/750. Mass 362 kg wet, about 45 kg hydrazine.

Orbit 108000 x 373000 x ?, 13.7 day period (P/2 lunar-resonant orbit). with apogee at 90 deg to Moon, after lunar flyby.

Survey will measure half a million stars. 27 day exposure (2 orbits) on each of 26 (24 x 96 deg) sectors.

TESS
Date	Time	Event	Orbit
2018 Apr 16	2251:30	Launch by Falcon 9	CC SLC40
		T+2:29 MECO
		T+2:32 St 1 sep
		T+2:34 SEIG-1
		T+3:05 Fairing
		T+3? Boostback burn?
		T+6:29 St 1 entry burn
		T+6:52 St 1 entry burn shutdown
		T+8:19? Landing burn, 3 engines
	2259	T+8:20 SECO-1	250 x 250 x 28.5
	2259	T+8:20 St 1 on droneship?
	2334:41	T+43:10 SEIG-2
	2335:34	T+44:03 SECO-2	200? x 270000 x 28.5
	2341:06	T+49:35 Stage 2 sep
	2349:29	T+57:58 Solar array
2018 Apr 19	0011	Stage 2 SEIG-3 370m/s
	0011:19	Stage 2 SECO-3, hyperbolic
2018 Apr 19	0155	Pass GEO
	1110	Stage 2 pass EL1:4
2018 Apr 19	1600	Pass EL1:4
2018 Apr 22	0142		8945.49 1306 x 271428 x 28.8
2018 Apr 22	0145	A1M apogee burn, cal 54s 4m/s	600 x 270000
	0145		8956.0 1547 x 271429 x 28.8
2018 Apr 22	0236	Apogee 1 272166 km
2018 Apr 25	0542	Perigee 1 2232 km
		P1 perigee burn	1480 x 353437 x 28.9
2018 Apr 29	1904	Apogee 2 353440 km
		A2M burn
2018 May 4	0805	Perigee 2 760 km
	0805?	P2 burn 7s	760 x 355000?
2018 May 8	2213	Apogee 3 355032 km
		A3M burn	806 x 355032
2018 May 13	1138	Perigee 3 870 km
		P3 burn	300 x 400000?
2018 May 16	1219	Enter Lunar sphere
2018 May 17	0632	8119 km Lunar flyby
2018 May 18	0048	Depart lunar sphere
			107000 x 376300 x 37
2018 May 30			17.47d 99036 x 435600 x 36.6
2018 May 30	0130	Period adjust mvr (PAM) burn	13.48d 99037 x 366905 x 36.6

Payload:

• AOCS engine, 22N (mono hydrazine) 215 m/s delta-V

• Wide FOV CCD cameras, 4. f/1.4, 24 x 24 deg FOV each with 16.8Mpix per camera. Entrance pupil 0.105m. 5300A-1 mu.