AGASC ID 746995400

Info

Last Obs. 2024:149:19:28
magcatalog 9.88 ± 0.09
mag3 arcsec 9.44 ± 0.06
mag5 arcsec 9.44 ± 0.06
Nobs 13 (0 bad)
fok 99.7%
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 mag ⟩ 100s ⟨ mag ⟩ σmag Comments
2755 2002:316:10:10:23.505 7 -461.5 -328.8 15234 15015 9 99.2% 100.0% 100.0% 99.1% 0.07 9.40 0.00 --
3695 2003:132:14:21:39.782 7 442.5 363.7 9437 9302 10 99.7% 100.0% 100.0% 99.7% 0.05 9.43 0.00 --
3694 2003:135:12:43:05.069 7 435.5 372.6 9174 9104 9 99.9% 100.0% 100.0% 99.9% 0.07 9.47 0.00 --
4353 2003:135:18:23:28.848 7 447.6 434.7 5280 5218 3 99.9% 100.0% 100.0% 99.8% 0.11 9.54 0.00 --
3692 2003:136:11:47:50.436 7 460.1 376.4 4777 4715 8 99.9% 99.9% 99.9% 99.8% 0.04 9.46 0.00 --
3693 2003:136:15:00:05.816 7 444.5 376.7 5319 5257 2 99.9% 99.9% 100.0% 99.9% 0.03 9.43 0.00 --
3699 2003:313:08:59:07.947 6 -438.2 -287.1 4874 4783 98 99.7% 100.0% 100.0% 99.7% 0.08 9.40 0.00 --
3700 2003:313:12:18:18.868 7 -456.4 -318.1 5426 5375 6 99.9% 100.0% 100.0% 99.9% 0.04 9.41 0.00 --
3701 2003:313:15:27:58.868 7 -468.4 -318.6 9618 9513 4 99.8% 100.0% 100.0% 99.7% 0.06 9.43 0.00 --
3702 2003:313:21:01:10.599 7 -468.0 -319.2 10213 10141 2 99.7% 100.0% 100.0% 99.7% 0.10 9.47 0.00 --
5159 2004:301:13:24:13.182 7 -477.0 -287.8 5216 5128 5 99.5% 100.0% 100.0% 99.5% 0.04 9.43 0.00 --
57082 2009:150:08:46:53.901 7 367.2 433.0 155 24 0 100.0% 100.0% 100.0% 100.0% 0.00 9.63 0.00 --
28458 2024:149:19:28:57.563 7 387.1 422.2 2551 2476 0 99.9% 95.5% 100.0% 95.4% 0.23 9.66 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.