AGASC ID 58853800

Info

Last Obs. 2024:239:21:16
magcatalog 7.94 ± 0.02
mag3 arcsec 7.96 ± 0.02
mag5 arcsec 7.96 ± 0.02
Nobs 11 (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
6312 2005:174:03:10:19.606 5 484.0 -331.5 19660 19599 10 100.0% 100.0% 100.0% 100.0% 0.02 7.95 0.00 --
5548 2005:176:18:01:03.396 5 484.0 -331.5 26003 25937 25 100.0% 100.0% 100.0% 100.0% 0.02 7.96 0.00 --
9116 2008:173:14:25:48.016 3 389.3 325.5 14783 14714 18 100.0% 100.0% 100.0% 100.0% 0.02 7.94 0.00 --
12500 2011:066:23:02:23.684 3 64.6 422.2 635 561 0 100.0% 100.0% 100.0% 100.0% 0.01 7.95 0.00 --
52642 2014:194:03:57:04.178 0 -217.1 388.4 3047 2988 2 99.9% 100.0% 100.0% 99.9% 0.01 7.94 0.00 --
51892 2015:133:09:40:12.740 0 359.3 273.4 1319 1263 1 99.9% 100.0% 100.0% 99.9% 0.01 7.93 0.00 --
50924 2016:178:14:17:54.650 2 -196.7 -233.7 1103 1051 2 99.9% 100.0% 100.0% 99.9% 0.01 7.94 0.00 --
49965 2017:184:22:12:45.769 6 -69.1 442.2 595 521 0 100.0% 100.0% 100.0% 100.0% 0.02 7.93 0.00 --
62617 2024:161:23:07:53.948 5 319.1 -326.2 7202 7136 4 100.0% 100.0% 100.0% 100.0% 0.05 8.00 0.00 --
26502 2024:203:04:05:13.190 4 424.6 197.4 7168 7107 1 100.0% 100.0% 100.0% 100.0% 0.03 7.98 0.00 --
27053 2024:239:21:16:29.306 6 123.7 463.8 7414 7342 1 99.9% 100.0% 100.0% 99.9% 0.05 7.99 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.