AGASC ID 417348376

Info

Last Obs. 2025:083:20:19
magcatalog 8.19 ± 0.02
mag3 arcsec 8.21 ± 0.01
mag5 arcsec 8.21 ± 0.01
Nobs 13 (0 bad)
fok 99.9%
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
8225 2007:024:05:31:49.663 6 183.9 -167.0 1366 1295 2 99.9% 100.0% 100.0% 99.9% 0.02 8.22 0.00 --
8226 2007:049:18:38:52.522 4 248.7 -51.3 1367 1300 2 99.9% 100.0% 100.0% 99.9% 0.02 8.22 0.00 --
8227 2007:070:20:04:18.292 5 250.5 76.6 1368 1308 1 100.0% 100.0% 100.0% 100.0% 0.02 8.20 0.00 --
8224 2007:085:00:35:30.963 4 245.7 153.6 3320 3238 2 99.9% 100.0% 100.0% 99.9% 0.01 8.20 0.00 --
8228 2007:112:21:06:00.555 6 118.5 249.6 1365 1289 2 99.9% 100.0% 100.0% 99.9% 0.02 8.21 0.00 --
8444 2007:197:02:34:48.576 5 -119.2 241.1 3237 3178 6 99.9% 100.0% 100.0% 99.9% 0.02 8.19 0.00 --
8599 2007:235:04:51:07.184 6 -281.2 76.2 34489 34421 48 99.9% 100.0% 100.0% 99.9% 0.01 8.20 0.00 --
8170 2007:237:17:40:17.158 6 -281.2 76.2 38463 38372 53 100.0% 100.0% 100.0% 100.0% 0.01 8.20 0.00 --
8445 2007:260:22:34:03.505 6 -232.7 -68.2 3482 3434 2 99.9% 100.0% 100.0% 99.9% 0.01 8.20 0.00 --
8446 2008:025:02:43:59.341 4 193.8 -185.1 3070 2999 4 99.9% 100.0% 100.0% 99.9% 0.02 8.22 0.00 --
10881 2009:132:10:18:03.858 4 30.8 276.4 32697 32534 47 99.9% 100.0% 100.0% 99.9% 0.02 8.21 0.00 --
30534 2025:083:10:36:43.809 5 225.4 134.2 3759 3694 0 100.0% 100.0% 100.0% 100.0% 0.07 8.25 0.00 --
30869 2025:083:20:19:11.445 5 223.7 134.9 3780 3636 1 99.7% 99.8% 99.9% 99.5% 0.04 8.25 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.