AGASC ID 845807840

Info

Last Obs. 2025:148:06:51
magcatalog 9.50 ± 0.02
mag3 arcsec 9.50 ± 0.02
mag5 arcsec 9.50 ± 0.02
Nobs 13 (0 bad)
fok 98.1%
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
8597 2007:290:06:53:45.593 7 -422.4 -470.3 29373 29224 43 99.7% 100.0% 100.0% 99.7% 0.04 9.51 0.00 --
8595 2007:292:13:59:44.122 5 -447.0 -448.1 57252 56193 82 98.2% 100.0% 100.0% 98.2% 0.04 9.51 0.00 --
12137 2010:106:08:38:21.671 5 448.3 459.8 46152 44979 66 97.6% 100.0% 100.0% 97.6% 0.04 9.50 0.00 --
12138 2010:108:12:21:35.040 5 448.3 459.8 19686 19260 18 98.1% 100.0% 100.0% 98.1% 0.04 9.50 0.00 --
12053 2010:186:03:03:10.025 6 423.0 -457.2 34004 33893 55 99.8% 100.0% 100.0% 99.8% 0.04 9.52 0.00 --
12054 2010:190:11:19:40.203 6 423.0 -457.2 30656 30411 53 99.5% 100.0% 100.0% 99.4% 0.03 9.52 0.00 --
12230 2010:192:03:26:33.148 5 423.0 -457.2 16837 16722 30 99.9% 100.0% 100.0% 99.9% 0.03 9.52 0.00 --
56128 2010:192:13:49:01.354 3 423.0 -457.2 97 47 0 100.0% 100.0% 100.0% 100.0% 0.01 9.52 0.00 --
16462 2014:287:13:32:09.697 7 -409.0 -482.3 71472 69391 72 97.2% 100.0% 100.0% 97.2% 0.08 9.49 0.00 --
52388 2014:289:06:26:21.164 2 -409.0 -482.3 82 48 0 100.0% 100.0% 100.0% 100.0% 0.03 9.50 0.00 --
17535 2014:290:07:22:48.874 7 -409.0 -482.3 60450 58369 46 96.7% 100.0% 100.0% 96.6% 0.08 9.48 0.00 --
48141 2019:150:16:12:18.710 1 49.1 -90.2 824 764 2 98.8% 99.9% 100.0% 98.7% 0.09 9.57 0.00 --
42380 2025:148:06:51:23.924 6 -296.1 -353.4 2644 2589 1 99.9% 99.2% 100.0% 99.2% 0.09 9.55 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.