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List of roll days
 
Date: 12 April 1994, 94102 UARS 944

The UARS scapecraft occasionally performed rolls to enhance scientific return or for engineering reasons. The rolls are shown in the table below.



UARS day

Year-day of year

Date

Time (UT)

Orbit

Roll maneuver

 944

1994 -102

12 April 1994

14:33

14112

Spacecraft rolled +2.4 degrees (cold side rolled down)

954

 

1994-112

22 April 1994

13:36:06

14261

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

954

1994-112

22 April 1994

21:37:12

14266

Spacecraft rolled +2.4 degrees (cold side down)

985

1994-143

23 May 1994

17:24:24

14727

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

985

1994-143

23 May 1994

20:26:42

14729

Spacecraft rolled +2.4 degrees (cold side down)

1027

 

1994-185

04 July 1994

13:58:42

15354

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1027

1994-185

04 July 1994

17:11:02

15356

Spacecraft rolled +2.4 degrees (cold side down)

1058

1994-216

04 August 1994

16:08:59

15820

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1058

1994-216

04 August 1994

19:21:17

15821

Spacecraft rolled +2.4 degrees (cold side down)

1097

1994-255

12 September 1994

14:07:45

16402

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1097

1994-255

12 September 1994

17:20:04

16404

Spacecraft rolled +2.4 degrees (cold side down)

1108

1994-266

23 September 1994

00:22:39

16558

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1108

1994-266

23 September 1994

22:50:23

16572

Spacecraft rolled +2.4 degrees (cold side down)

1135

1994-293

20 October 1994

15:12:37

16972

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1135

1994-293

20 October 1994

23:13:41

16977

Spacecraft rolled from 0 degrees to +2.4 degrees (cold side down)

1166

1994-324

20 November 1994

14:14:34

17435

 

Spacecraft rolled from +2.4 degrees (cold side down) to nominal attitude (0 degrees)

1166

1994-324

20 November 1994

17:26:54

17437

Spacecraft rolled from 0 degrees to –2.4 degrees (cold side up)

1207

1994-365

31 December 1994

17:23:31

18051

Spacecraft rolled from -2.4 degrees (cold side up) to nominal attitude (0 degrees)

1207

1994-365

31 December 1994

20:35:51

18053

Spacecraft rolled from 0 degrees to –2.4 degrees (cold side up

1217

1995-010

10 January 1995

00:08:00

Not recorded

Spacecraft rolled from -2.4 degrees (cold side up) to +0.5 degrees (cold side down)

1237

1995-030

30 January 1995

14:41:18

18498

Spacecraft rolled from +0.5 degrees (cold side down) to nominal attitude (0 degrees)

1569

1995-361

28 December 1995

16:09:24

23454

Spacecraft rolled from 0.0 degrees to +0.32 degrees (cold side down).  Maneuver was performed to enable WINDII to observe the Polar  Mesospheric Clouds in the Southern Hemisphere. 

1598

1996-026

26 January 1996

13:22:55

23901

Spacecraft rolled from +0.32 degrees (cold side down) to nominal attitude (0 degrees)

1762

1996-190

08 July 1996

12:08:10

26355

Spacecraft rolled to +0.5 degrees (cold side down).  Maneuver to support WINDII observations of gravity waves.

1769

1996-197

15 July 1996

12:38:30

26460

Spacecraft rolled from +0.5 degrees (cold side down) to nominal (0 degrees)

1942

1997-004

04 January 1997

13:28:27

29051

Spacecraft rolled +2.0 degrees (cold side down). Maneuver performed to support WINDII observations of gravity waves.

1950

 

1997-012

12 January 1997

14:02:40

29171

Spacecraft rolled from +2.0 degrees (cold side down) to nominal (0 degrees).

2654

1998-351

17 December 1998

14:54:57

39713

Spacecraft rolled +0.5 degrees (cold side down).  Maneuver performed to support WINDII observations of Polar Mesosphere clouds.

2679

1999-011

11 January 1999

13:12:11

40085

Spacecraft rolled from +0.5 degrees (cold side down) to nominal attitude (0 degrees).

2731

1999-063

04 March 1999

22:48:00

40870

Spacecraft rolled +0.5 degrees (cold side down). ).  Maneuver performed to support WINDII observations of Polar Mesosphere clouds.

2743

1999-087

16 March 1999

23:38:06

41021

Spacecraft rolled from +0.5 degrees (cold side down) to nominal attitude (0 degrees).

3017

1999-349

15 December 1999

15:23

45149

Spacecraft rolled +0.4 degrees (cold side down). ).  Maneuver performed to support WINDII observations of Polar Mesosphere clouds.

3025

1999-357

23 December 1999

16:51

45270

Spacecraft rolled from +0.4 degrees (cold side down) to nominal attitude (0 degrees).

 

 
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