AGASC ID 1090921280

Info

Last Obs. 2025:155:00:05
magcatalog 9.07 ± 0.02
mag3 arcsec 9.08 ± 0.02
mag5 arcsec 9.08 ± 0.02
Nobs 26 (0 bad)
fok 98.6%
f3 arcsec 99.9%
f5 arcsec 100.0%

Timeline

Observation Info

OBSID Time Slot Row Col N Nmag est ok Nout fmag est ok fdr3 fdbox5 fmag est ok 3 ⟨ δ mag ⟩ 100s ⟨ mag ⟩ σmag Comments
3517 2003:264:13:00:05.609 4 342.3 -96.7 2693 2634 4 99.9% 100.0% 100.0% 99.9% 0.02 9.08 0.00 --
4597 2004:117:17:37:40.153 3 -115.0 237.0 2446 2386 2 100.0% 100.0% 100.0% 100.0% 0.02 9.06 0.00 --
4599 2004:293:12:38:27.061 3 295.5 -172.6 2590 2506 4 99.8% 100.0% 100.0% 99.7% 0.03 9.09 0.00 --
5473 2005:164:19:01:17.680 6 -362.8 -346.1 2598 2548 4 99.8% 100.0% 100.0% 99.8% 0.04 9.09 0.00 --
5595 2005:282:17:08:34.219 7 317.2 -143.7 2341 2283 3 99.9% 100.0% 100.0% 99.9% 0.02 9.09 0.00 --
11823 2010:152:05:00:06.000 3 54.5 283.2 30995 30889 43 99.9% 100.0% 100.0% 99.8% 0.03 9.08 0.00 --
56227 2010:152:23:18:37.873 2 54.5 283.2 102 61 0 100.0% 100.0% 100.0% 100.0% 0.01 9.08 0.00 --
56218 2010:154:02:30:39.895 1 -98.0 296.8 86 48 0 100.0% 100.0% 100.0% 100.0% 0.02 9.06 0.00 --
15617 2013:057:00:58:38.113 5 249.2 443.5 13437 13170 16 98.6% 100.0% 100.0% 98.6% 0.04 9.08 0.00 --
14532 2013:059:16:38:33.730 5 249.2 443.5 14455 14165 19 98.5% 100.0% 100.0% 98.5% 0.03 9.08 0.00 --
14531 2013:176:01:32:18.803 5 244.3 -255.6 30232 30050 28 99.6% 100.0% 100.0% 99.6% 0.03 9.10 0.00 --
15393 2013:184:00:14:07.948 6 333.9 -160.6 29818 29095 36 97.7% 100.0% 100.0% 97.7% 0.03 9.11 0.00 --
52740 2014:151:18:31:51.221 1 -32.2 274.0 1135 1062 0 98.2% 99.8% 100.0% 98.1% 0.04 9.07 0.00 --
51833 2015:164:22:05:38.381 0 390.2 76.4 1963 1880 3 98.3% 99.9% 100.0% 98.2% 0.03 9.07 0.00 --
51831 2015:165:08:30:34.210 2 391.2 70.7 2481 2408 2 99.0% 100.0% 100.0% 99.0% 0.04 9.07 0.00 --
16955 2015:166:13:41:09.502 5 -262.8 307.4 29409 28960 25 98.7% 100.0% 100.0% 98.7% 0.06 9.05 0.00 --
16956 2015:169:13:57:04.167 4 17.2 201.9 12334 12152 14 98.9% 100.0% 100.0% 98.9% 0.04 9.07 0.00 --
17676 2015:170:19:20:17.624 4 17.2 201.9 17052 16797 18 98.8% 100.0% 100.0% 98.8% 0.04 9.08 0.00 --
18459 2016:144:07:22:45.312 5 14.6 308.3 13240 12760 19 97.4% 100.0% 100.0% 97.4% 0.03 9.07 0.00 --
18854 2016:151:02:06:23.638 5 14.6 308.3 6487 6257 9 97.5% 100.0% 100.0% 97.5% 0.03 9.07 0.00 --
19724 2017:152:05:20:38.289 3 93.6 284.4 23464 22775 20 97.3% 100.0% 100.0% 97.3% 0.06 9.07 0.00 --
19725 2018:011:11:28:36.289 4 -287.3 -69.5 23562 22907 23 97.6% 100.0% 100.0% 97.6% 0.07 9.07 0.00 --
20334 2018:053:19:12:40.412 7 483.3 287.6 1367 1271 2 98.6% 100.0% 100.0% 98.6% 0.07 9.05 0.00 --
20744 2018:159:18:48:10.113 3 122.8 271.6 24926 24394 33 98.1% 100.0% 100.0% 98.1% 0.07 9.06 0.00 --
20746 2019:014:16:56:55.950 4 -291.6 -56.3 23613 23185 32 98.5% 100.0% 100.0% 98.5% 0.07 9.04 0.00 --
30492 2025:155:00:05:10.268 7 77.5 288.4 7293 7182 2 99.9% 95.7% 100.0% 95.6% 0.16 9.09 0.00 --

  • sample: One sample of ACA image telemetry. This could be a real image readout or it could be a null 4x4 image when the ACA is not tracking. Be aware that the sample period is faster for null 4x4 images (1.025 sec) than for typical 6x6 or 8x8 tracked images (2.05 or 4.1 sec respectively).
  • Kalman samples: Subset of samples when ACA could be tracking stars (AOPCADMD == NPNT & AOACASEQ == KALM)
  • dr3: Subset of tracked Kalman samples with radial centroid residual < 3 arcsec. This corresponds to "high quality" readouts. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • dbox5: Subset of tracked Kalman samples with centroid residual within a 5 arcsec box. This corresponds to spatial filter used by the OBC for inclusion in Kalman filter. This effectively includes the track subset (AOACFCT == TRAK) because readouts with no TRAK are assigned an infinite centroid residual.
  • track: Subset of Kalman samples where the image is being tracked (AOACFCT == TRAK)
  • sat_pix: Subset of Kalman samples with saturated pixel flag OK (AOACISP == OK)
  • ion_rad: Subset of Kalman samples with ionizing radiation flag OK (AOACIIR == OK)
  • mag_est_ok: Subset of Kalman samples that have a magnitude estimate (track & ion_rad)
  • n_total: Total number of sample regardless of OBC PCAD status
  • n: Synonym for n_total
  • n_kalman: Number of Kalman samples
  • n_dr3: Number of dr3 samples.
  • n_dbox5: Number of dbox5 samples.
  • n_track: Number of track samples.
  • n_ok_3: Number of (track & sat_pix & ion_rad & dr3) samples
  • n_ok_5: Number of (track & sat_pix & ion_rad & dbox5) samples
  • n_mag_est_ok: Number of (track & ion_rad) samples
  • n_mag_est_ok_3: Number of (track & ion_rad & dr3) samples
  • n_mag_est_ok_5: Number of (track & ion_rad & dbox5) samples
  • f_dr3: Fraction of mag-est-ok samples with centroid residual < 3 arcsec((mag_est_ok & n_dr3)/n_mag_est_ok)
  • f_dbox5: Fraction of mag-est-ok samples with centroid within 5 arcsec box((mag_est_ok & n_dbox5)/n_mag_est_ok)
  • f_mag_est_ok: n_mag_est_ok_3/n_kalman. This is a measure of the fraction of time during an observation that a magnitude estimate is available.
  • f_mag_est_ok_3: n_mag_est_ok_3/n_kalman.
  • f_mag_est_ok_5: n_mag_est_ok_5/n_kalman.
  • f_ok: n_ok_5 / n_kalman. Same as f_ok_5
  • f_ok_3: n_ok_3 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting high-quality star centroids.
  • f_ok_5: n_ok_5 / n_kalman. This is a measure of the fraction of time during an observation that the Kalman filter is getting any star centroid at all. This includes measurements out to 5 arcsec box halfwidth, so potentially 7 arcsec radial offset.