OCO-2

 2014-035A

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Replacement Orbiting Carbon Observatory to monitor atmospheric CO2 to 0.3 percent accuracy on 1000 km scales; to fly in the A-Train (leading GCOM-W1 by 185s and leading Aqua by 444.5s).

Hex cyl 2.12m long 0.94m wide, mass 454 kg wet. 45 kg of prop. Span 7.4m?

OCO 2
Date	Time	Event	Orbit
2014 Jul 2	0956:23	Launch by Delta 7320-10	V SLC2W
		T+1:39 SRM 1-3 sep
	T+4:24 MECO
		T+4:32 St 1 sep
		T+4:38 SES-1
	1001:24	T+5:01 PLF sep
	1006:43	T+10:20 SECO-1	185 x 726 x 98.1
	1047:13	T+50:50 SES-2
	1047:25	T+51:02 SECO-2	680 x 696 x 98.2
	1052:38	T+56:15 OCO sep
	1121:23	T+1:25:00 SES-3
		T+1:25:38 SECO-3	604 x 3743 x 98.2
	1153	T+1:56:40 SES-4
	1153	T+1:57:31 SECO-4	2380 x 10336 x 98.2 (s)
			253.59 2375 x 10139 x 98.2
2014 Jul 3			98.45 687 x 690 x 98.2
2014 Jul 10			98.54 686 x 691 x 98.2
2014 Jul 11			98.48 682 x 689 x 98.2
2014 Jul 25			98.48 683 x 689 x 98.2
2014 Jul 30			98.64 693 x 693 x 98.2
		Raise orbit
2014 Aug 3			98.83 701 x 703 x 98.2
2014 Aug 27			98.83 701 x 703 x 98.2

Payload:

• CO2/O2 spectrometer (JPL;Hamilton Sunstrand/Pomona) 135 kg; 3 bands (2 CO2, 1 O2); f/1.8 Cassegrain optics, R=20000. Bands are 1.61 mu, 2.06mu (CO2) and 0.765mu (O2).