AGASC ID 260050336

Info

Last Obs. 2024:092:13:52
magcatalog 9.67 ± 0.04
mag3 arcsec 9.75 ± 0.03
mag5 arcsec 9.75 ± 0.03
Nobs 13 (0 bad)
fok 96.5%
f3 arcsec 96.7%
f5 arcsec 99.7%

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
14885 2014:042:04:19:30.387 3 456.7 -211.1 9903 9727 9 98.9% 99.9% 100.0% 98.9% 0.07 9.80 0.00 --
14886 2014:172:08:24:31.035 7 -228.1 483.2 16668 15735 229 94.7% 81.0% 98.4% 76.7% 0.09 9.72 0.00 --
16601 2015:018:16:43:46.307 3 319.4 -386.2 31845 30748 41 96.7% 100.0% 100.0% 96.7% 0.05 9.74 0.00 --
52158 2015:019:11:35:10.219 0 319.4 -386.2 95 46 0 100.0% 100.0% 100.0% 100.0% 0.01 9.75 0.00 --
16962 2016:043:20:41:12.021 3 460.0 -202.0 12819 12421 94 97.4% 96.2% 99.6% 93.8% 0.08 9.74 0.00 --
18765 2016:045:07:49:30.254 7 460.0 -202.0 9969 9613 15 97.1% 99.7% 100.0% 96.8% 0.06 9.75 0.00 --
18766 2016:046:21:07:39.137 3 460.0 -202.0 20552 19893 80 97.1% 98.4% 99.9% 95.5% 0.09 9.74 0.00 --
18764 2016:048:03:43:47.201 7 460.0 -202.0 14675 14089 21 96.4% 99.4% 100.0% 95.8% 0.12 9.76 0.00 --
51255 2016:048:12:28:53.171 0 460.0 -202.0 97 44 0 100.0% 100.0% 100.0% 100.0% 0.01 9.77 0.00 --
26033 2022:135:18:06:02.256 6 17.5 -442.6 5022 4724 15 95.0% 99.9% 100.0% 94.9% 0.13 9.82 0.00 --
25274 2023:186:04:43:39.936 5 271.4 -343.1 2805 2758 2 99.8% 99.8% 99.9% 99.6% 0.11 9.83 0.00 --
27940 2023:186:16:07:35.831 5 271.1 -343.0 2166 2117 4 99.9% 100.0% 100.0% 99.8% 0.08 9.78 0.00 --
29356 2024:092:13:52:00.681 7 459.6 66.9 923 840 6 97.9% 88.0% 93.3% 86.1% 0.16 9.74 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.