AGASC ID 114557160

Info

Last Obs. 2024:079:05:14
magcatalog 9.26 ± 0.07
mag3 arcsec 9.30 ± 0.03
mag5 arcsec 9.30 ± 0.03
Nobs 12 (0 bad)
fok 98.6%
f3 arcsec 99.8%
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
60797 2003:088:01:52:12.991 1 220.5 143.5 95 41 0 97.6% 100.0% 100.0% 97.6% 0.01 9.29 0.00 --
60796 2003:089:06:18:00.482 1 207.9 161.4 315 265 1 100.0% 100.0% 100.0% 100.0% 0.03 9.31 0.00 --
8061 2008:052:00:17:31.807 3 -105.5 -350.7 2778 2723 1 100.0% 100.0% 100.0% 100.0% 0.02 9.28 0.00 --
8090 2008:054:15:00:37.392 4 216.3 80.0 2782 2693 5 98.8% 100.0% 100.0% 98.8% 0.03 9.28 0.00 --
19411 2018:125:17:52:36.963 3 166.7 -282.5 4293 4154 12 98.5% 100.0% 100.0% 98.5% 0.03 9.33 0.00 --
19415 2018:174:21:49:19.754 3 462.4 450.7 7464 7255 10 98.1% 100.0% 100.0% 98.1% 0.03 9.29 0.00 --
24909 2020:357:16:59:17.160 4 -30.3 -127.7 12343 12161 9 99.1% 100.0% 100.0% 99.0% 0.10 9.29 0.00 --
24910 2021:011:13:59:31.250 4 -53.7 -122.2 12469 12285 8 98.9% 100.0% 100.0% 98.9% 0.11 9.31 0.00 --
23850 2021:095:19:01:49.672 3 439.5 233.4 9927 9731 6 98.9% 100.0% 100.0% 98.9% 0.08 9.29 0.00 --
25002 2021:096:07:20:45.858 3 484.1 93.9 7235 7073 11 99.0% 99.9% 100.0% 98.9% 0.06 9.30 0.00 --
25003 2021:099:21:58:36.010 3 456.9 190.2 10331 9901 55 96.7% 99.1% 100.0% 95.8% 0.07 9.32 0.00 --
26754 2024:079:05:14:49.096 4 304.2 -310.7 2538 2468 2 99.9% 99.9% 100.0% 99.8% 0.17 9.37 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.