AGASC ID 670830024

Info

Last Obs. 2023:089:14:07
magcatalog 8.54 ± 0.08
mag3 arcsec 8.31 ± 0.01
mag5 arcsec 8.31 ± 0.01
Nobs 16 (0 bad)
fok 99.6%
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
7337 2006:156:01:25:20.411 7 482.4 207.0 8728 8722 12 99.9% 100.0% 100.0% 99.9% 0.01 8.31 0.00 --
6686 2006:158:20:14:36.051 7 482.4 207.0 27662 27174 39 99.9% 100.0% 100.0% 99.9% 0.02 8.32 0.00 --
7338 2006:160:04:17:26.972 7 482.4 207.0 19587 19575 25 99.9% 100.0% 100.0% 99.9% 0.01 8.32 0.00 --
7339 2006:163:12:11:35.029 7 482.4 207.0 22013 21999 26 99.9% 100.0% 100.0% 99.9% 0.01 8.32 0.00 --
7582 2007:261:00:43:34.505 7 -483.1 491.0 2529 2528 3 100.0% 100.0% 100.0% 100.0% 0.02 8.31 0.00 --
7472 2008:050:07:01:43.419 5 355.3 89.1 580 578 1 99.8% 100.0% 100.0% 99.8% 0.01 8.30 0.00 --
10938 2009:222:09:49:53.045 6 -392.6 360.6 23995 23972 34 99.9% 100.0% 100.0% 99.9% 0.01 8.31 0.00 --
55278 2011:208:15:23:53.544 5 -427.6 198.3 2495 2492 9 99.9% 99.9% 100.0% 99.8% 0.02 8.30 0.00 --
18030 2016:160:12:17:50.076 7 472.2 204.9 42020 41979 33 99.9% 100.0% 100.0% 99.9% 0.02 8.31 0.00 --
18866 2016:163:17:32:32.338 7 472.2 204.9 30412 30311 30 99.7% 100.0% 100.0% 99.7% 0.03 8.31 0.00 --
21236 2019:240:01:53:55.246 4 -483.1 -240.0 14695 14649 19 99.7% 100.0% 100.0% 99.7% 0.03 8.31 0.00 --
21237 2019:262:22:59:25.465 4 -434.3 -314.7 14712 14534 9 98.8% 100.0% 100.0% 98.8% 0.04 8.31 0.00 --
21238 2019:292:22:19:01.424 3 -369.5 -384.7 14286 14099 14 98.7% 100.0% 100.0% 98.7% 0.04 8.31 0.00 --
20899 2019:304:10:25:12.853 3 -339.0 -410.2 24451 24260 17 99.2% 100.0% 100.0% 99.2% 0.04 8.30 0.00 --
25735 2023:087:08:01:26.114 4 472.4 -175.7 3703 3667 1 99.0% 100.0% 100.0% 99.0% 0.05 8.33 0.00 --
27771 2023:089:14:07:07.576 4 470.0 -184.6 2484 2446 1 98.5% 100.0% 100.0% 98.5% 0.03 8.31 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.