Compton GRO Phase 3 Timeline, updated August 22, 1994
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VIEW GRO Z-AXIS* GRO Z-AXIS* GROX-AXIS* OSSE PRIMARY TARGET OSSE SECONDARY TARGET
PER. START RA DEC LONG LAT RA DEC RA DEC RA DEC
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301 08/17/93 128.92 -45.18 263.59 -2.74 161.94 39.80 VELA PULSAR 128.92 -45.18 QSO 1028+313 157.74 31.05
232** 08/24/93 258.02 -39.35 347.50 0.00 188.46 23.07 GPLANE 347.5 258.02 -39.35 MRK 421 166.11 38.21
232.5**08/26/93 258.02 -39.35 347.50 0.00 182.10 16.48 GPLANE 347.5 258.02 -39.35 NGC 4388 186.44 12.66
302.0 09/07/93 307.63 52.63 89.13 7.82 202.99 10.92 N CYG 1992 307.63 52.63 NGC 5548 214.50 25.13
302.3 09/09/93 258.64 -22.70 1.41 9.26 180.21 25.63 GX 1+4 263.01 -24.75 VIRGO 298+82 192.31 19.75
303.0 09/21/93 157.58 -42.88 277.21 12.83 217.43 28.41 GRS 1009-45 153.25 -45.40 NGC 5548 214.50 25.13
303.2 09/22/93 307.63 52.63 89.13 7.82 202.99 10.92 N CYG 1992 307.63 52.63 NGC 5548 214.50 25.13
303.4 10/01/93 270.79 37.87 64.33 25.27 182.17 -1.77 CYG X-1 299.58 35.20 3C 273 187.28 2.05
303.5 10/04/93 REBOOST
303.7 10/17/93 307.63 52.63 89.13 7.82 202.99 10.92 N CYG 1992 307.63 52.63 NGC 5548 214.50 25.13
304 10/19/93 183.29 5.68 278.20 66.70 271.03 -21.61 VIRGO 278+67 183.29 5.68 PSR 1800-21 270.96 -21.61
305 10/25/93 181.58 2.06 277.71 62.70 270.59 -25.79 VIRGO 278+63 181.58 2.06 GRO J1719-24 259.93 -25.01
306 11/02/93 180.01 -1.62 277.60 58.70 270.91 -28.89 VIRGO 278+59 180.01 -1.62 G CENTER 266.40 -28.94
307 11/09/93 181.19 9.53 268.69 69.24 267.48 -21.06 VIRGO 269+69 181.19 9.53 PSR 1800-21 270.96 -21.61
308.0 11/16/93 187.61 12.59 283.22 74.65 261.40 -51.35 VIRGO 283+75 187.61 12.59 GPLANE 337 248.87 -47.50
308.3 11/19/93 REBOOST
308.6 11/23/9 187.61 12.59 283.22 74.65 261.40 -51.35 VIRGO 283+75 187.61 12.59 GPLANE 337 248.87 -47.50
310 12/01/93 98.48 17.77 195.14 4.27 201.46 35.02 GEMINGA 98.48 17.77 NGC 4151 182.63 39.41
311.0 12/13/93 187.69 12.41 283.70 74.50 272.61 -21.93 VIRGO 284+75 187.69 12.41 PSR 1800-21 270.96 -21.61
311.3 12/15/93 187.69 12.41 283.70 74.50 272.61 -21.93 VIRGO 284+75 187.69 12.41 PSR 1800-21 270.96 -21.61
312 12/20/93 185.52 9.12 280.50 70.70 265.95 -46.00 VIRGO 281+71 185.52 9.12 GPLANE 343 253.97 -43.32
313 12/27/93 190.10 16.12 289.30 78.70 270.42 -30.20 VIRGO 289+79 190.10 16.12 G CENTER 266.40 -28.94
314 01/03/94 195.69 -63.83 304.18 -0.99 277.5 53.99 PSR 1259-63 195.69 -63.83 N HER 1991 281.63 12.24
315 01/16/94 195.69 -63.83 304.18 -0.99 282.8 31.41 PSR 1259-63 195.69 -63.83 G CENTER 266.40 -28.94
316 01/23/94 201.37 -43.02 309.52 19.42 310.35 -19.21 CEN A 201.37 -43.02 CTA 102 338.15 11.73
318.1 02/01/94 301.26 30.92 68.44 -0.38 332.98 -54.85 CYG X-1 299.59 35.20 PSR 0540-69 85.05 -69.33
321.1 02/08/94 84.73 26.32 181.44 -2.64 10.50 -28.79 1A 0535+262 84.73 26.32 NGC 253 11.89 -25.29
321.5 02/15/94 84.73 26.32 181.44 -2.64 9.37 -27.06 1A 0535+262 84.73 26.32 NGC 253 11.89 -25.29
317 02/17/94 37.41 10.61 158.48 -45.38 306.0 7.18 3C 120 68.29 5.35 CTA 102 338.15 11.73
319.0 03/01/94 110.48 71.34 143.99 28.02 341.13 12.08 QSO 0716+714 110.48 71.34 PKS 2155-304 329.72 -30.22
320 03/08/94 345.81 8.87 83.09 -45.47 76.4 4.13 NGC 7469 345.81 8.87 3C 120 68.29 5.35
319.5 03/15/94 105.20 68.99 146.42 26.02 343.89 11.28 MRK 3 93.91 71.03 PKS 2155-304 329.72 -30.22
323 03/22/94 276.44 -37.11 356.84 -11.29 349.25 21.35 1H 1822-371 276.44 -37.11 QSO 2251+158 343.49 16.13
322 04/05/94 157.07 31.09 197.01 58.62 65.0 3.34 QSO 1028+313 157.74 31.05 PKS 0528+134 82.73 13.53
324 04/19/94 269.39 -13.15 15.03 5.63 356.64 11.62 GPLANE 15 274.47 -15.90 NGC 7469 345.81 8.87
325 04/26/94 49.07 46.94 147.04 -9.04 67.24 -41.60 GT 0236+610 40.14 61.22 SN 1987A 83.86 -69.27
326 05/10/94 156.69 31.65 195.92 58.31 47.37 28.24 QSO 1028+313 157.74 31.05 NRAO 140 54.13 32.31
327 05/17/94 348.06 5.44 82.86 -49.56 81.57 32.73 NGC 7469 345.81 8.87 NRAO 140 54.13 32.31
328 05/24/94 298.76 28.07 64.87 -0.03 69.89 50.97 CYG X-3 308.11 40.96 PSR 0611+22 93.56 22.42
329 05/31/94 69.26 -47.25 253.40 -42.00 88.04 41.18 PSR J0437-47 69.26 -47.25 CRAB PULSAR 83.52 22.02
331.0 06/07/94 298.76 28.07 64.87 -0.03 69.89 50.97 CYG X-3 308.11 40.96 PSR 0611+22 93.56 22.42
330 06/10/94 275.93 -13.26 18.00 0.00 341.41 60.41 GPLANE 18 275.93 -13.26 GT 0236+610 40.14 61.22
331.5 06/14/94 298.76 28.07 64.87 -0.03 69.89 50.97 CYG X-3 308.11 40.96 PSR 0611+22 93.56 22.42
332 06/18/94 275.93 -13.26 18.00 0.00 341.41 60.41 GPLANE 18 275.93 -13.26 GT 0236+610 40.14 61.22
333 07/05/94 298.76 28.07 64.87 -0.03 69.89 50.97 CYG X-3 308.11 40.96 PSR 0611+22 93.56 22.42
335.0 07/12/94 69.26 -47.25 253.40 42.00 107.01 36.16 PSR J0437-47 69.26 -47.25 GEMINGA 98.48 17.77
334 07/18/94 279.49 -25.06 9.01 -8.38 235.26 56.88 GPLANE 16 275.13 -14.71 HER X-1 254.46 35.34
335.5 07/25/94 69.26 -47.25 253.40 42.00 107.01 36.16 PSR J0437-47 69.26 -47.25 GEMINGA 98.48 17.77
336 08/01/94 349.67 9.72 88.37 -46.83 106.56 69.25 NGC 7469 345.81 8.87 MRK 3 93.91 71.03
336.5 08/04/94 249.14 -43.04 340.43 2.86 135.68 -23.09 GRO J1655-40 253.60 -40.80 PSR 0656+14 104.70 14.23
337 08/09/94 87.70 0.98 205.00 13.00 178.49 39.05 PSR 0656+14 104.70 14.23 NGC 4151 182.63 39.41
338.0 08/29/94# 253.50 -39.85 344.98 2.46 149.06 -16.64 GRO J1655-40 253.50 -39.85 NGC 2992 146.42 -14.33
338.5 08/31/94 128.92 -45.18 263.59 -2.74 200.60 17.34 VELA PULSAR 128.92 -45.18 3C 273 187.28 2.05
339 09/20/94 234.71 -1.82 4.05 40.40 143.62 -30.89 PG 1416-129 214.77 -13.18 MCG -5-23-16 146.92 -30.96
10/04/94 end Phase 3
* Z-axis is pointing direction for COMPTEL and EGRET. OSSE points in X-Z
plane. RA and DEC are J2000. ** Phase 2 target. # EGRET spark chanber turned off