AGASC ID 554047072

Info

Last Obs. 2024:241:07:52
magcatalog 9.25 ± 0.02
mag3 arcsec 9.27 ± 0.03
mag5 arcsec 9.27 ± 0.03
Nobs 13 (0 bad)
fok 98.6%
f3 arcsec 99.7%
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
9291 2008:058:15:19:07.639 4 425.1 -367.0 5027 4966 7 99.9% 100.0% 100.0% 99.9% 0.02 9.28 0.00 --
15038 2013:244:19:16:33.784 7 -464.9 368.5 16914 16301 23 96.7% 100.0% 100.0% 96.7% 0.03 9.25 0.00 --
16322 2013:247:10:08:15.746 7 -464.9 368.5 22737 21815 19 96.2% 100.0% 100.0% 96.2% 0.04 9.25 0.00 --
19752 2018:154:07:45:08.998 3 -444.3 195.2 21117 20936 36 99.4% 100.0% 100.0% 99.4% 0.07 9.25 0.00 --
27206 2024:020:00:46:25.107 5 483.4 27.9 4323 4257 1 99.9% 99.3% 100.0% 99.3% 0.08 9.28 0.00 --
29201 2024:020:10:41:32.908 4 482.5 39.5 3075 3005 1 100.0% 98.1% 100.0% 98.1% 0.09 9.28 0.00 --
29293 2024:057:10:59:12.430 6 334.3 322.0 3517 3452 1 99.9% 99.1% 100.0% 99.0% 0.10 9.28 0.00 --
27208 2024:062:06:22:21.049 6 340.8 316.6 3513 3442 2 99.9% 99.9% 100.0% 99.9% 0.10 9.30 0.00 --
29294 2024:062:15:32:58.734 6 316.3 337.5 3512 3455 1 99.9% 99.9% 100.0% 99.8% 0.10 9.27 0.00 --
27209 2024:213:08:07:16.425 5 -365.3 -238.7 6720 6618 1 99.9% 99.8% 100.0% 99.8% 0.16 9.29 0.00 --
26933 2024:213:21:31:47.781 5 -365.4 -238.6 8135 8074 1 99.9% 99.9% 100.0% 99.8% 0.13 9.30 0.00 --
27205 2024:214:12:57:17.780 5 -361.9 -245.4 10083 10020 1 99.9% 98.4% 100.0% 98.3% 0.18 9.31 0.00 --
27204 2024:241:07:52:49.467 6 -283.8 -345.4 7219 7163 6 99.9% 99.4% 100.0% 99.3% 0.12 9.28 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.