AGASC ID 692721328

Info

Last Obs. 2024:340:03:37
magcatalog 8.46 ± 0.02
mag3 arcsec 8.48 ± 0.02
mag5 arcsec 8.48 ± 0.02
Nobs 13 (0 bad)
fok 99.8%
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
5910 2005:261:09:42:54.235 6 479.0 169.5 29644 29473 28 99.6% 100.0% 100.0% 99.6% 0.02 8.47 0.00 --
59405 2005:281:15:08:54.602 4 67.4 -431.4 5167 5115 6 99.9% 100.0% 100.0% 99.9% 0.02 8.49 0.00 --
59404 2005:281:21:48:12.069 5 -72.6 58.6 91 52 0 100.0% 100.0% 100.0% 100.0% 0.01 8.47 0.00 --
56750 2009:288:06:43:27.033 5 -60.5 73.1 2092 2046 5 99.9% 100.0% 100.0% 99.9% 0.01 8.46 0.00 --
56747 2009:290:12:07:45.880 4 -213.8 -272.0 7840 7785 9 99.8% 100.0% 100.0% 99.8% 0.02 8.46 0.00 --
12988 2010:282:23:36:36.717 6 321.5 -82.4 14915 14852 21 99.9% 100.0% 100.0% 99.9% 0.02 8.49 0.00 --
55946 2010:295:17:55:10.482 3 256.3 286.5 1150 1105 1 100.0% 100.0% 100.0% 100.0% 0.02 8.48 0.00 --
51546 2015:297:09:57:01.261 2 261.5 433.3 2533 2472 11 99.7% 100.0% 100.0% 99.7% 0.02 8.48 0.00 --
27994 2024:195:09:51:02.281 6 -428.5 -48.1 3131 3077 1 100.0% 100.0% 100.0% 99.9% 0.06 8.53 0.00 --
27995 2024:242:21:53:31.617 6 -432.2 17.8 3428 3389 1 99.9% 100.0% 100.0% 99.9% 0.05 8.53 0.00 --
43080 2024:279:00:34:50.784 3 -323.0 225.5 2672 2231 2 100.0% 100.0% 100.0% 100.0% 0.03 8.51 0.00 --
27996 2024:291:06:55:44.728 6 -267.3 348.1 3297 3247 0 100.0% 100.0% 100.0% 100.0% 0.07 8.52 0.00 --
27997 2024:340:03:37:51.245 6 317.7 286.5 3214 3146 1 100.0% 100.0% 100.0% 100.0% 0.05 8.51 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.