AGASC ID 807144088

Info

Last Obs. 2025:139:11:01
magcatalog 9.05 ± 0.02
mag3 arcsec 9.07 ± 0.02
mag5 arcsec 9.07 ± 0.02
Nobs 15 (0 bad)
fok 98.7%
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 mag100s ⟨ mag ⟩ σmag Comments
4077 2003:178:15:55:18.433 6 -408.3 101.8 9452 9393 11 99.9% 100.0% 100.0% 99.9% 0.02 9.06 0.00 --
22582 2019:363:14:32:54.254 7 393.0 -84.4 24541 24192 29 98.9% 100.0% 100.0% 98.9% 0.08 9.06 0.00 --
23221 2020:107:07:40:53.814 7 395.2 -73.2 7952 7723 14 97.8% 100.0% 100.0% 97.8% 0.04 9.08 0.00 --
23041 2020:109:12:51:18.068 7 395.0 -73.1 6977 6677 12 96.7% 100.0% 100.0% 96.7% 0.05 9.07 0.00 --
23043 2020:133:11:11:40.173 6 -419.0 54.3 9900 9553 19 97.0% 100.0% 100.0% 97.0% 0.05 9.06 0.00 --
23249 2020:135:21:44:40.816 6 -418.9 54.3 14779 14306 21 97.3% 100.0% 100.0% 97.3% 0.07 9.08 0.00 --
22583 2020:143:19:04:52.172 7 -391.2 165.9 14773 14620 16 99.4% 100.0% 100.0% 99.3% 0.07 9.05 0.00 --
23254 2020:144:11:45:58.060 7 -391.7 166.2 9897 9751 12 99.2% 100.0% 100.0% 99.2% 0.05 9.07 0.00 --
23042 2021:102:06:05:07.030 7 381.0 -121.5 12831 12644 27 99.2% 100.0% 100.0% 99.1% 0.04 9.09 0.00 --
25006 2021:102:19:09:47.144 7 380.3 -121.1 10882 10690 16 99.1% 100.0% 100.0% 99.1% 0.03 9.09 0.00 --
25007 2021:106:15:42:17.969 7 382.0 -122.0 8199 7998 20 98.5% 100.0% 100.0% 98.5% 0.04 9.09 0.00 --
27811 2023:120:13:07:03.176 7 405.5 -224.0 2780 2678 0 98.6% 100.0% 100.0% 98.6% 0.06 9.09 0.00 --
30198 2025:131:01:00:17.742 6 -408.7 -96.5 4231 4185 25 99.9% 97.3% 100.0% 97.2% 0.13 9.13 0.00 --
30923 2025:133:02:46:21.110 7 -422.8 49.1 3748 3701 0 100.0% 100.0% 100.0% 100.0% 0.08 9.13 0.00 --
30208 2025:139:11:01:01.703 7 -387.0 178.4 3737 3694 3 99.9% 96.5% 100.0% 96.5% 0.09 9.10 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.