AGASC ID 865600272

Info

Last Obs. 2022:197:19:47
magcatalog 7.84 ± 0.03
mag3 arcsec 7.88 ± 0.01
mag5 arcsec 7.88 ± 0.01
Nobs 11 (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
20622 2018:024:22:47:52.676 5 -136.4 -328.7 14720 14685 12 99.8% 100.0% 100.0% 99.8% 0.01 7.85 0.00 --
24379 2021:069:06:53:07.445 5 -371.2 10.6 15925 15770 18 99.0% 100.0% 100.0% 99.0% 0.03 7.88 0.00 --
24378 2021:292:17:13:08.771 5 216.8 -272.3 7402 7337 7 99.1% 100.0% 100.0% 99.1% 0.02 7.87 0.00 --
24380 2021:295:08:33:09.549 5 217.0 -272.3 11398 11251 12 98.7% 100.0% 100.0% 98.7% 0.03 7.87 0.00 --
23657 2021:295:21:55:34.270 5 215.6 -271.7 11299 11293 8 99.9% 100.0% 100.0% 99.9% 0.02 7.87 0.00 --
24381 2022:042:19:48:41.467 3 -193.2 -301.7 7387 7377 9 99.9% 100.0% 100.0% 99.9% 0.02 7.88 0.00 --
24381 2022:140:00:25:03.251 3 -144.6 347.7 7399 7356 6 99.4% 100.0% 100.0% 99.4% 0.03 7.88 0.00 --
24382 2022:172:03:33:04.234 3 -65.0 373.1 19862 19859 9 100.0% 100.0% 100.0% 100.0% 0.03 7.89 0.00 --
24384 2022:174:03:16:28.051 3 -62.8 372.1 21532 21469 14 99.7% 100.0% 100.0% 99.7% 0.03 7.89 0.00 --
26454 2022:195:07:48:16.377 3 -4.7 375.4 16603 16559 14 99.7% 100.0% 100.0% 99.7% 0.05 7.88 0.00 --
24383 2022:197:19:47:42.914 3 62.0 368.6 4938 4919 3 99.6% 100.0% 100.0% 99.6% 0.04 7.87 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.