AGASC ID 115343960

Info

Last Obs. 2024:086:18:37
magcatalog 8.63 ± 0.10
mag3 arcsec 8.72 ± 0.01
mag5 arcsec 8.72 ± 0.01
Nobs 12 (0 bad)
fok 99.6%
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
3324 2002:202:20:23:28.230 6 315.8 436.3 2535 2482 4 99.8% 100.0% 100.0% 99.8% 0.01 8.73 0.00 --
2972 2002:321:00:14:23.054 3 323.0 484.3 3560 3508 2 100.0% 100.0% 100.0% 100.0% 0.01 8.73 0.00 --
2922 2002:343:00:42:16.232 3 -337.6 -292.9 8923 8860 6 100.0% 100.0% 100.0% 100.0% 0.02 8.72 0.00 --
60807 2003:078:19:41:06.599 0 -286.3 91.9 5960 5907 6 100.0% 100.0% 100.0% 99.9% 0.03 8.72 0.00 --
59020 2006:104:02:27:40.961 0 229.3 438.3 5691 5643 4 100.0% 100.0% 100.0% 100.0% 0.02 8.73 0.00 --
7858 2008:045:07:51:02.666 3 -285.6 487.4 2581 2533 0 100.0% 100.0% 100.0% 100.0% 0.02 8.71 0.00 --
11761 2009:316:18:36:47.790 3 261.2 -287.3 6365 6299 14 99.9% 100.0% 100.0% 99.8% 0.02 8.72 0.00 --
56686 2009:316:22:37:57.460 0 261.2 -287.3 149 27 0 100.0% 100.0% 100.0% 100.0% 0.00 8.72 0.00 --
17155 2016:040:09:05:24.760 3 398.0 -111.6 4473 4408 6 99.8% 100.0% 100.0% 99.8% 0.02 8.74 0.00 --
17467 2016:123:12:32:55.025 3 -388.4 -415.3 5806 5674 3 98.6% 100.0% 100.0% 98.6% 0.02 8.73 0.00 --
19402 2018:101:10:32:00.106 3 -131.8 -166.2 3849 3697 9 97.3% 100.0% 100.0% 97.3% 0.02 8.70 0.00 --
26755 2024:086:18:37:14.158 4 326.1 -391.6 2623 2555 2 99.9% 100.0% 100.0% 99.9% 0.05 8.76 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.