AGASC ID 615129680

Info

Last Obs. 2024:313:07:34
magcatalog 9.04 ± 0.02
mag3 arcsec 9.07 ± 0.02
mag5 arcsec 9.07 ± 0.02
Nobs 12 (0 bad)
fok 98.9%
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
17307 2015:190:06:06:05.507 5 -479.0 -295.8 25265 24967 24 99.1% 100.0% 100.0% 99.1% 0.04 9.05 0.00 --
17308 2015:191:23:14:07.921 5 -485.8 -248.6 22850 22436 23 98.8% 100.0% 100.0% 98.8% 0.02 9.06 0.00 --
18260 2016:021:17:25:56.111 5 -443.8 18.4 5072 4979 5 99.5% 100.0% 100.0% 99.5% 0.03 9.06 0.00 --
50677 2016:273:06:35:59.461 5 419.0 -31.5 169 39 0 95.1% 100.0% 100.0% 95.1% 0.01 9.07 0.00 --
50263 2017:063:12:12:06.994 4 -218.9 -403.6 4960 4836 9 98.5% 99.9% 100.0% 98.4% 0.04 9.02 0.00 --
22857 2019:271:01:49:59.483 5 410.5 -98.5 19664 19427 25 99.3% 100.0% 100.0% 99.2% 0.05 9.09 0.00 --
22563 2019:271:21:45:11.713 5 412.0 -99.2 9905 9617 12 97.9% 100.0% 100.0% 97.9% 0.05 9.09 0.00 --
22562 2019:281:21:19:25.912 6 355.2 -229.2 11828 11581 11 98.6% 100.0% 100.0% 98.6% 0.07 9.07 0.00 --
22868 2019:283:21:57:07.228 6 354.4 -228.9 17223 16991 30 99.0% 100.0% 100.0% 99.0% 0.04 9.08 0.00 --
22869 2019:284:13:58:50.669 6 354.1 -228.7 17201 17048 19 99.5% 100.0% 100.0% 99.5% 0.05 9.07 0.00 --
22870 2019:286:16:09:18.526 6 355.5 -229.4 15834 15492 23 98.2% 100.0% 100.0% 98.2% 0.06 9.06 0.00 --
42991 2024:313:07:34:47.702 6 24.1 180.6 870 818 1 99.6% 99.5% 100.0% 99.1% 0.05 9.06 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.