AGASC ID 472659736

Info

Last Obs. 2023:160:17:48
magcatalog 9.53 ± 0.09
mag3 arcsec 9.39 ± 0.02
mag5 arcsec 9.39 ± 0.02
Nobs 15 (0 bad)
fok 99.0%
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
4309 2003:053:17:21:40.081 7 -266.2 488.1 580 578 0 99.7% 100.0% 100.0% 99.7% 0.06 9.38 0.00 --
5065 2004:330:14:45:29.400 7 482.4 475.4 533 533 0 100.0% 100.0% 100.0% 100.0% 0.01 9.39 0.00 --
5078 2004:330:19:50:59.400 5 382.5 378.2 531 531 0 100.0% 100.0% 100.0% 100.0% 0.03 9.36 0.00 --
8316 2007:260:21:18:33.505 7 468.5 -479.5 577 577 0 100.0% 100.0% 100.0% 100.0% 0.02 9.40 0.00 --
13065 2011:262:04:48:05.947 7 477.0 -462.6 579 578 1 100.0% 100.0% 100.0% 100.0% 0.02 9.40 0.00 --
13086 2011:262:14:10:02.195 7 479.3 -359.5 576 576 0 100.0% 100.0% 100.0% 100.0% 0.04 9.39 0.00 --
15427 2013:259:23:38:45.492 7 465.1 -485.2 577 574 0 99.5% 100.0% 100.0% 99.5% 0.05 9.37 0.00 --
15448 2013:261:07:01:52.879 7 474.8 -370.3 577 576 0 100.0% 100.0% 100.0% 100.0% 0.03 9.39 0.00 --
16415 2014:259:20:03:57.004 7 461.1 -392.5 577 575 1 99.7% 100.0% 100.0% 99.7% 0.06 9.41 0.00 --
19805 2017:255:23:19:44.776 7 480.9 -417.4 574 567 0 98.8% 100.0% 100.0% 98.8% 0.04 9.39 0.00 --
19812 2017:258:13:14:29.764 7 454.5 -410.3 571 542 0 94.9% 100.0% 100.0% 94.9% 0.04 9.40 0.00 --
19833 2017:260:10:43:45.688 7 471.2 -484.5 578 574 2 99.5% 100.0% 100.0% 99.5% 0.05 9.38 0.00 --
20681 2018:261:00:37:37.315 7 473.2 -480.0 577 563 1 97.6% 100.0% 100.0% 97.6% 0.05 9.36 0.00 --
24558 2021:252:06:44:49.468 7 489.0 -484.7 584 563 3 96.4% 100.0% 100.0% 96.4% 0.04 9.40 0.00 --
25611 2023:160:17:48:58.225 7 -410.7 -494.6 292 291 0 100.0% 100.0% 100.0% 100.0% 0.07 9.39 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.