AGASC ID 1200759272

Info

Last Obs. 2024:305:13:55
magcatalog 8.34 ± 0.02
mag3 arcsec 8.37 ± 0.03
mag5 arcsec 8.37 ± 0.03
Nobs 13 (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 mag ⟩ 100s ⟨ mag ⟩ σmag Comments
18018 2017:079:17:59:13.659 7 -207.4 -455.4 19939 19834 22 99.8% 100.0% 100.0% 99.8% 0.03 8.38 0.00 --
20042 2017:083:18:41:47.780 7 -207.8 -455.2 9900 9792 12 99.8% 100.0% 100.0% 99.8% 0.03 8.38 0.00 --
19921 2017:100:22:15:27.865 5 -441.9 -256.3 8828 8674 14 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
20058 2017:104:13:44:35.455 4 -441.7 -256.4 21751 21623 29 99.8% 100.0% 100.0% 99.7% 0.03 8.39 0.00 --
18020 2017:107:21:11:09.693 4 -440.9 -256.8 13548 13373 12 99.3% 100.0% 100.0% 99.3% 0.03 8.38 0.00 --
50142 2017:108:05:18:11.293 3 -441.9 -256.4 176 53 0 100.0% 100.0% 100.0% 100.0% 0.00 8.38 0.00 --
19923 2017:116:18:52:07.596 4 -440.8 -256.9 29314 28973 16 99.3% 100.0% 100.0% 99.3% 0.05 8.33 0.00 --
25162 2022:200:21:10:28.683 4 -179.5 108.2 13805 13637 9 99.3% 100.0% 100.0% 99.3% 0.05 8.39 0.00 --
26460 2022:201:11:57:52.829 4 -178.8 107.9 11414 11202 3 98.7% 100.0% 100.0% 98.7% 0.04 8.38 0.00 --
27084 2023:204:04:31:11.408 5 -126.0 353.4 6927 6861 6 100.0% 100.0% 100.0% 100.0% 0.04 8.36 0.00 --
27083 2023:232:05:08:30.159 5 53.4 370.2 6193 6126 3 100.0% 100.0% 100.0% 100.0% 0.05 8.39 0.00 --
26558 2024:221:12:43:02.229 6 -12.1 374.3 10335 10272 3 100.0% 100.0% 100.0% 100.0% 0.13 8.32 0.00 --
28036 2024:305:13:55:31.338 5 324.4 329.3 12777 12716 2 100.0% 100.0% 100.0% 100.0% 0.13 8.36 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.