AGASC ID 1050810048

Info

Last Obs. 2024:188:02:46
magcatalog 7.94 ± 0.10
mag3 arcsec 7.94 ± 0.01
mag5 arcsec 7.94 ± 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 mag ⟩ 100s ⟨ mag ⟩ σmag Comments
13401 2011:262:15:25:32.195 3 -126.2 287.3 5996 5943 2 100.0% 100.0% 100.0% 100.0% 0.02 7.92 0.00 --
16135 2014:230:03:52:56.631 3 -278.2 74.9 28823 28732 15 100.0% 100.0% 100.0% 100.0% 0.02 7.95 0.00 --
16545 2014:232:10:17:08.308 3 -278.2 74.9 29418 29360 25 100.0% 100.0% 100.0% 100.0% 0.02 7.95 0.00 --
20630 2017:233:17:36:18.769 3 -254.4 138.1 19164 19081 14 99.9% 100.0% 100.0% 99.9% 0.02 7.93 0.00 --
19581 2017:235:18:52:58.415 3 -255.0 138.4 44431 44258 32 99.9% 100.0% 100.0% 99.9% 0.02 7.94 0.00 --
20631 2017:239:11:32:03.227 3 -255.7 138.7 25015 24934 19 100.0% 100.0% 100.0% 100.0% 0.03 7.94 0.00 --
19582 2017:240:09:02:52.894 3 -228.7 186.0 5275 5219 4 99.9% 100.0% 100.0% 99.9% 0.02 7.94 0.00 --
20634 2017:241:10:20:27.813 3 -228.6 185.9 34992 34887 29 99.9% 100.0% 100.0% 99.9% 0.03 7.94 0.00 --
20635 2017:243:17:48:50.323 3 -221.0 197.2 36785 36714 29 99.9% 100.0% 100.0% 99.9% 0.03 7.93 0.00 --
19583 2017:257:06:42:50.903 3 -154.8 262.3 12365 12289 13 99.9% 100.0% 100.0% 99.9% 0.02 7.92 0.00 --
20797 2018:025:09:22:30.079 3 332.1 95.8 21616 21507 20 99.9% 100.0% 100.0% 99.9% 0.03 7.93 0.00 --
27399 2024:188:02:46:07.604 3 -299.6 -111.2 12226 12190 5 100.0% 100.0% 100.0% 100.0% 0.05 7.98 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.