AGASC ID 188350560

Info

Last Obs. 2026:081:07:08
magcatalog 9.11 ± 0.02
mag3 arcsec 9.16 ± 0.04
mag5 arcsec 9.16 ± 0.04
Nobs 13 (1 bad)
fok 99.4%
f3 arcsec 99.9%
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
9556 2008:026:06:46:08.530 3 -414.5 -112.1 9897 9828 15 99.9% 100.0% 100.0% 99.9% 0.02 9.12 0.00 --
21014 2018:329:11:08:48.303 3 -423.3 490.7 3882 3586 10 93.7% 100.0% 100.0% 93.7% 0.03 9.11 0.00 --
25224 2023:139:18:48:21.543 4 414.6 6.1 3743 3684 4 99.9% 100.0% 100.0% 99.9% 0.08 9.16 0.00 --
27844 2023:140:19:18:52.348 4 410.2 72.8 3810 3751 8 99.9% 100.0% 100.0% 99.9% 0.05 9.15 0.00 --
27488 2023:177:19:53:03.876 4 410.9 61.5 3957 3911 6 100.0% 99.9% 99.9% 99.9% 0.05 9.15 0.00 --
27930 2023:179:13:39:57.796 4 410.7 64.5 4005 3957 48 99.9% 100.0% 100.0% 99.9% 0.10 9.17 0.00 --
29652 2026:078:01:23:29.631 5 -457.0 -442.8 2520 2476 5 100.0% 100.0% 100.0% 99.9% 0.07 9.20 0.00 --
32222 2026:078:09:26:34.320 5 -452.1 -448.0 2668 2620 2 99.8% 99.4% 100.0% 99.2% 0.07 9.20 0.00 --
32223 2026:078:17:43:48.732 5 -447.2 -452.9 2585 2540 3 100.0% 100.0% 100.0% 100.0% 0.06 9.19 0.00 --
32224 2026:079:22:50:25.245 6 -430.7 -469.1 2765 2720 2 100.0% 100.0% 100.0% 100.0% 0.09 9.18 0.00 --
31878 2026:080:15:14:33.018 6 -420.2 -478.3 2765 2719 0 99.9% 100.0% 100.0% 99.9% 0.16 9.22 0.00 --
32237 2026:080:23:21:48.375 6 -415.3 -482.5 2764 2726 3 100.0% 99.9% 100.0% 99.9% 0.08 9.20 0.00 --
32238 2026:081:07:08:15.233 6 -410.8 -486.2 0 0 -1 0.0% 0.0% 0.0% 0.0% inf inf inf Error: No telemetry data.

  • 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.