DSP-21

 2001-033A

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DSP-21 launched by Titan 4B-31 with the IUS-16 upper stage. Shortly afterwards, DSP 17 vacated the 103E position and was replaced by DSP 18 which moved there from the 70E position; it seems a reasonable assumption that DSP 21 occupied the prime 70E Indian Ocean position.

DSP 21 carried a sensor to detect space weather related anomalies.

DSP-21
Date	Time	Event	Orbit
2001 Aug 6	0728:00	Launch by Titan 4B	CC LC40
		T+2:11 St 1 MES
		T+2:26 SRMU sep
		T+3:26 PLF sep
		T+5:21 St 1 MECO, sep
		T+5:21 St 2 MES
	0736	T+8:55 St 2 MECO
	0737	T+9:05 St 2 sep	94.54 328 x 663 x 28.7
			189 x 764 x 28.6 (UN)
	0841	T+1:13:29 IUS SRM-1
	0843	T+1:15:51? IUS SRM-1 cutoff
	1357	T+6:29:32 SRM-1 sep	39.1 367 x 36033 x 28.1 (UN)
	1400	T+6:32:56 SRM-2 burn
	1402	T+6:34:40? SRM-2 burnout
	1422	T+6:54:51 SRM-2 sep
2001 Aug 7?		Cover sep
2001 Sep?			GEO 70E?
2003 Nov		DSP Indian Ocean	GEO 70E
2011 Oct 4		DSP Indian Ocean	1436.12 35773 x 35800 x 6.1 GEO 69.6E
2012 Jan 1		Move to DSP E Hem?	1436.12 35763 x 35801 x 6.4 GEO 103.8E

Shiyan

 2004-046A

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Shiyan-2 was launched by CZ-2C from Xichang. The 300 kg remote sensing satellite was developed by DFH Satellite Co. It is also known as Qianshao 1,

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A large piece of debris (2004-046G) was tracked in a 662 x 697 km orbit in Dec 2004 but not subsequently; this may have been an erroneous cataloging.

Shiyan 2 was a scientific experimental microsatellite, 300kg, based on platform CAST2000, developed by DFHSat. It has high precision control systems and rapid slewing capability. The satellite validated the the bus technology for scientific experimental small satellites; 6 new technologies were demonstrated: high precision control, integrated satellite systems, high efficiency battery, multi-function structure, etc It also tested infrared sensors, possibly for the SJ-11 series, and according to Lissov (nasaspaceflight.com) a signals intelligence payload.

On 2007 Jul 4 the satellite's orbit changed slightly, lowering by 2 km. This may represent an end of life maneuver. However it was reported to be operating in 2010.

SY-2
Date	Time	Event	Orbit
2004 Nov 18	1045	Launch by CZ-2C
	1058	Stage 2 sep
2004 Nov 19			694 x 711 x 98.2
2007 Jun 14			98.83 694 x 710 x 98.2
2007 Jul 4			98.83 695 x 709 x 98.2
		Orbit adjust	98.80 695 x 707 x 98.2
2007 Jul 7			98.80 694 x 708 x 98.2
2007 Nov 29			98.80 693 x 709 x 98.2