AGASC ID 896008536

Info

Last Obs. 2022:291:18:12
magcatalog 8.67 ± 0.11
mag3 arcsec 8.58 ± 0.01
mag5 arcsec 8.58 ± 0.01
Nobs 13 (0 bad)
fok 99.2%
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
13712 2012:050:22:24:55.638 7 283.7 -419.6 549 549 0 100.0% 100.0% 100.0% 100.0% 0.03 8.60 0.00 --
16307 2014:203:23:21:29.498 7 -397.3 368.0 22042 21909 17 99.4% 100.0% 100.0% 99.4% 0.03 8.57 0.00 --
16492 2014:228:23:56:38.044 7 -379.1 386.9 22115 22060 19 99.8% 100.0% 100.0% 99.8% 0.03 8.57 0.00 --
51751 2015:196:15:54:40.907 6 61.9 258.7 30 30 0 100.0% 100.0% 100.0% 100.0% 0.00 8.59 0.00 --
19907 2016:307:08:12:06.861 7 -347.0 417.9 13144 12976 13 98.7% 100.0% 100.0% 98.7% 0.02 8.57 0.00 --
50586 2016:307:16:25:45.902 7 -346.4 417.5 68 65 0 95.6% 100.0% 100.0% 95.6% 0.02 8.58 0.00 --
19958 2017:141:08:02:34.073 7 333.5 -384.9 14722 14578 25 99.0% 100.0% 100.0% 99.0% 0.04 8.59 0.00 --
23057 2020:186:11:11:36.734 7 13.0 267.4 12770 12665 22 99.2% 100.0% 100.0% 99.2% 0.04 8.57 0.00 --
23296 2020:187:02:46:47.327 7 12.6 267.6 13373 13147 19 98.3% 100.0% 100.0% 98.3% 0.03 8.58 0.00 --
24202 2022:076:18:15:45.065 7 -172.7 -265.8 2208 2170 2 98.3% 100.0% 100.0% 98.3% 0.03 8.57 0.00 --
24057 2022:112:01:59:34.298 7 -286.2 -22.1 2206 2165 2 98.1% 100.0% 100.0% 98.1% 0.03 8.59 0.00 --
24071 2022:204:04:23:52.439 7 59.8 103.0 2210 2197 4 99.5% 100.0% 100.0% 99.4% 0.05 8.57 0.00 --
27271 2022:291:18:12:35.339 7 -355.7 409.1 5276 5267 1 99.8% 100.0% 100.0% 99.8% 0.06 8.59 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.