AGASC ID 821561440

Info

Last Obs. 2024:281:18:13
magcatalog 7.89 ± 0.02
mag3 arcsec 7.90 ± 0.02
mag5 arcsec 7.90 ± 0.02
Nobs 23 (0 bad)
fok 99.9%
f3 arcsec 100.0%
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
2708 2002:281:11:00:41.384 5 -341.6 251.0 14873 14800 10 99.9% 100.0% 100.0% 99.9% 0.02 7.91 0.00 --
6093 2005:039:19:33:06.894 3 297.5 -256.7 4538 4458 1 100.0% 100.0% 100.0% 100.0% 0.01 7.90 0.00 --
6685 2006:258:00:44:00.221 3 177.9 445.9 14820 14761 13 100.0% 100.0% 100.0% 100.0% 0.01 7.91 0.00 --
6654 2006:262:06:23:36.695 3 -411.8 -452.2 5119 5069 8 100.0% 100.0% 100.0% 99.9% 0.01 7.92 0.00 --
11815 2010:205:05:38:03.401 4 -284.6 316.0 14349 14303 8 100.0% 100.0% 100.0% 100.0% 0.01 7.89 0.00 --
11818 2010:217:13:54:40.722 3 -306.0 294.9 14773 14717 13 99.9% 100.0% 100.0% 99.9% 0.01 7.88 0.00 --
12549 2012:043:02:25:34.894 3 -197.0 -386.4 9899 9816 12 100.0% 100.0% 100.0% 100.0% 0.01 7.88 0.00 --
16674 2015:208:21:28:58.760 3 265.0 279.1 19282 19228 16 100.0% 100.0% 100.0% 100.0% 0.02 7.90 0.00 --
17695 2016:150:21:56:52.835 4 -106.5 -463.8 6484 6423 7 100.0% 100.0% 100.0% 100.0% 0.02 7.89 0.00 --
17440 2016:157:20:46:35.670 3 -105.4 -464.1 8433 8361 5 100.0% 100.0% 100.0% 100.0% 0.02 7.89 0.00 --
18906 2017:149:00:37:51.421 7 244.7 374.2 29423 29315 32 100.0% 100.0% 100.0% 99.9% 0.02 7.89 0.00 --
20192 2018:146:06:53:54.182 3 363.7 -160.9 11371 11287 9 100.0% 100.0% 100.0% 100.0% 0.02 7.90 0.00 --
20193 2019:048:11:36:22.768 4 278.5 -280.4 12342 12184 13 99.4% 100.0% 100.0% 99.4% 0.02 7.89 0.00 --
20194 2019:150:03:31:59.955 4 368.2 -149.3 12505 12412 9 99.9% 100.0% 100.0% 99.9% 0.02 7.91 0.00 --
47169 2020:153:11:00:19.899 0 -270.0 -58.5 1008 955 0 99.9% 100.0% 100.0% 99.9% 0.01 7.90 0.00 --
46825 2020:309:14:03:20.460 0 288.3 27.5 868 788 1 100.0% 100.0% 100.0% 100.0% 0.01 7.89 0.00 --
23545 2021:041:10:15:43.285 3 -178.8 -395.3 9901 9811 16 99.8% 100.0% 100.0% 99.8% 0.02 7.89 0.00 --
23546 2021:174:02:35:47.555 3 384.1 -185.1 9909 9784 9 99.7% 100.0% 100.0% 99.7% 0.02 7.91 0.00 --
26698 2024:053:11:47:01.359 5 305.6 -249.8 2531 2473 2 100.0% 100.0% 100.0% 100.0% 0.05 7.93 0.00 --
29283 2024:054:12:44:36.495 5 304.3 -248.0 2655 2590 0 100.0% 99.9% 100.0% 99.9% 0.03 7.93 0.00 --
29284 2024:056:03:16:23.977 5 305.7 -247.0 2676 2614 1 100.0% 100.0% 100.0% 100.0% 0.03 7.93 0.00 --
28355 2024:094:00:11:22.381 4 -155.8 -405.5 5150 5088 0 100.0% 100.0% 100.0% 100.0% 0.04 7.92 0.00 --
28356 2024:281:18:13:53.731 4 141.4 425.9 5032 4890 0 100.0% 100.0% 100.0% 100.0% 0.03 7.94 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.