AGASC ID 615130056

Info

Last Obs. 2023:292:20:05
magcatalog 6.87 ± 0.06
mag3 arcsec 6.89 ± 0.01
mag5 arcsec 6.89 ± 0.01
Nobs 12 (0 bad)
fok 100.0%
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 mag100s ⟨ mag ⟩ σmag Comments
16576 2014:314:18:31:37.885 7 -443.4 114.0 13350 13299 8 100.0% 100.0% 100.0% 100.0% 0.01 6.89 0.00 --
17306 2015:189:06:59:25.138 5 -470.0 -360.5 25649 25595 13 100.0% 100.0% 100.0% 100.0% 0.01 6.90 0.00 --
18263 2016:273:02:52:27.284 6 396.5 -362.4 5370 5288 1 100.0% 100.0% 100.0% 100.0% 0.01 6.88 0.00 --
50677 2016:273:06:35:59.461 7 394.6 -361.6 168 41 0 100.0% 100.0% 100.0% 100.0% 0.00 6.88 0.00 --
18257 2016:282:08:41:22.521 4 -102.7 322.3 5017 4963 3 100.0% 100.0% 100.0% 100.0% 0.01 6.87 0.00 --
50263 2017:063:12:12:06.994 5 -237.8 -73.3 4959 4910 6 100.0% 100.0% 100.0% 100.0% 0.01 6.87 0.00 --
20538 2017:270:19:40:37.768 3 262.7 266.4 5024 4943 3 100.0% 100.0% 100.0% 100.0% 0.02 6.86 0.00 --
22857 2019:271:01:49:59.483 7 334.8 -420.9 19660 19570 11 100.0% 100.0% 100.0% 100.0% 0.01 6.87 0.00 --
22563 2019:271:21:45:11.713 7 336.3 -421.6 9901 9825 1 100.0% 100.0% 100.0% 100.0% 0.01 6.88 0.00 --
23741 2020:341:11:55:20.658 5 339.0 -38.9 1174 1117 2 100.0% 100.0% 100.0% 100.0% 0.01 6.89 0.00 --
26738 2023:217:12:05:37.482 3 -315.9 186.7 2567 2517 3 100.0% 100.0% 100.0% 100.0% 0.02 6.91 0.00 --
27162 2023:292:20:05:25.650 3 -461.9 405.6 3258 3213 3 100.0% 100.0% 100.0% 100.0% 0.01 6.90 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.