AGASC ID 895879608

Info

Last Obs. 2022:174:16:07
magcatalog 8.99 ± 0.05
mag3 arcsec 8.94 ± 0.02
mag5 arcsec 8.94 ± 0.02
Nobs 24 (0 bad)
fok 99.3%
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
8202 2007:211:14:37:49.939 3 191.0 258.5 7757 7622 10 98.3% 100.0% 100.0% 98.3% 0.02 8.93 0.00 --
8204 2007:213:14:47:34.783 3 391.1 229.1 7889 7876 19 99.8% 100.0% 100.0% 99.8% 0.01 8.93 0.00 --
8205 2007:213:19:22:31.783 3 356.7 29.2 7408 7402 6 99.9% 100.0% 100.0% 99.9% 0.03 8.93 0.00 --
8206 2007:213:23:41:01.783 3 474.1 112.0 7360 7351 12 99.9% 100.0% 100.0% 99.9% 0.02 8.93 0.00 --
8207 2007:214:03:57:51.783 6 439.4 -87.7 7359 7352 9 99.9% 100.0% 100.0% 99.9% 0.02 8.95 0.00 --
8646 2008:137:14:47:24.633 3 341.2 145.1 1068 1066 2 99.8% 100.0% 100.0% 99.8% 0.01 8.94 0.00 --
8645 2008:137:15:29:14.633 3 183.8 83.4 1067 1065 2 99.8% 100.0% 100.0% 99.8% 0.02 8.93 0.00 --
8644 2008:137:16:11:04.633 3 27.1 21.5 1067 1067 0 100.0% 100.0% 100.0% 100.0% 0.03 8.95 0.00 --
8657 2008:137:19:40:14.633 3 315.3 -19.7 1066 1063 2 99.7% 100.0% 100.0% 99.7% 0.01 8.96 0.00 --
8658 2008:137:20:22:04.633 3 473.3 41.8 1068 1067 3 99.9% 99.9% 100.0% 99.8% 0.01 8.94 0.00 --
8668 2008:138:22:46:25.370 3 448.3 -122.8 1066 1065 0 100.0% 100.0% 100.0% 100.0% 0.01 8.96 0.00 --
8667 2008:138:23:28:15.370 4 290.8 -184.3 1068 1066 1 99.9% 100.0% 100.0% 99.9% 0.02 8.96 0.00 --
8666 2008:139:00:10:05.370 4 134.4 -246.4 1064 1063 1 99.9% 100.0% 100.0% 99.9% 0.02 8.95 0.00 --
8698 2008:139:01:33:45.370 7 -457.0 -488.8 1065 1063 1 99.8% 100.0% 100.0% 99.8% 0.01 8.96 0.00 --
9980 2009:035:09:21:04.125 5 333.8 -288.7 1065 1047 2 98.4% 100.0% 100.0% 98.4% 0.03 8.93 0.00 --
9981 2009:035:10:02:54.125 7 475.1 -197.7 1065 1064 1 99.9% 100.0% 100.0% 99.9% 0.01 8.94 0.00 --
10004 2009:035:11:26:34.125 5 343.8 -457.6 1064 1063 1 99.9% 100.0% 100.0% 99.9% 0.01 8.94 0.00 --
18310 2016:132:03:27:22.616 3 -379.8 -248.1 1046 1035 1 99.0% 100.0% 100.0% 99.0% 0.04 8.93 0.00 --
18312 2016:132:05:19:44.358 3 -240.7 -31.0 1154 1145 3 99.2% 99.9% 100.0% 99.1% 0.02 8.94 0.00 --
18329 2016:197:10:14:38.383 5 473.8 -452.0 1154 1147 2 99.5% 100.0% 100.0% 99.5% 0.02 8.95 0.00 --
24014 2022:145:01:50:14.058 5 237.7 -172.2 2670 2631 1 98.5% 100.0% 100.0% 98.5% 0.05 8.99 0.00 --
24015 2022:145:03:28:58.698 6 192.4 -360.1 2670 2633 3 98.6% 100.0% 100.0% 98.6% 0.07 8.97 0.00 --
24009 2022:174:01:27:02.277 7 -363.6 -284.4 2667 2583 1 96.9% 100.0% 100.0% 96.9% 0.03 8.96 0.00 --
24010 2022:174:16:07:36.922 5 -473.2 -98.5 2645 2572 0 97.2% 100.0% 100.0% 97.2% 0.05 8.98 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.