AGASC ID 8393696

Info

Last Obs. 2024:069:08:54
magcatalog 8.49 ± 0.06
mag3 arcsec 8.40 ± 0.01
mag5 arcsec 8.40 ± 0.01
Nobs 30 (0 bad)
fok 99.4%
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
56720 2009:301:09:05:16.000 1 -464.2 188.6 3115 3072 8 99.8% 100.0% 100.0% 99.8% 0.02 8.40 0.00 --
21911 2018:295:01:19:28.397 3 77.5 408.2 5020 4933 7 99.3% 100.0% 100.0% 99.3% 0.03 8.40 0.00 --
21912 2018:295:04:24:56.899 3 78.6 432.4 633 577 0 100.0% 100.0% 100.0% 100.0% 0.02 8.40 0.00 --
21913 2018:295:04:50:06.899 3 102.4 408.1 636 577 0 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21914 2018:295:05:15:16.899 4 78.8 383.7 635 571 0 99.0% 100.0% 100.0% 99.0% 0.03 8.41 0.00 --
21915 2018:295:05:40:26.899 3 55.3 407.9 634 578 2 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21916 2018:295:06:05:36.899 3 79.1 407.9 2585 2519 4 99.6% 100.0% 100.0% 99.6% 0.02 8.40 0.00 --
21917 2018:295:07:37:26.899 3 79.9 456.5 637 565 0 97.8% 100.0% 100.0% 97.8% 0.01 8.40 0.00 --
21918 2018:295:08:02:36.899 3 127.3 407.9 637 576 0 100.0% 100.0% 100.0% 100.0% 0.02 8.40 0.00 --
21919 2018:295:08:27:46.899 4 79.8 359.2 637 574 0 99.5% 100.0% 100.0% 99.5% 0.01 8.39 0.00 --
21920 2018:295:08:52:56.899 3 32.7 407.5 634 573 1 99.3% 100.0% 100.0% 99.3% 0.02 8.40 0.00 --
21921 2018:295:09:18:06.899 3 80.3 407.7 2586 2523 6 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21934 2018:295:10:49:56.899 3 80.9 407.5 5024 4960 10 99.8% 100.0% 100.0% 99.8% 0.02 8.40 0.00 --
21935 2018:296:16:25:34.610 3 91.7 405.0 5024 4962 6 99.9% 100.0% 100.0% 99.9% 0.02 8.40 0.00 --
21936 2018:296:19:29:46.303 4 93.0 429.1 637 576 0 99.8% 100.0% 100.0% 99.8% 0.03 8.40 0.00 --
21937 2018:296:19:54:56.303 3 116.8 404.8 636 577 0 100.0% 100.0% 100.0% 100.0% 0.02 8.40 0.00 --
21938 2018:296:20:20:06.303 4 93.2 380.3 634 578 1 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21939 2018:296:20:45:16.303 3 69.7 404.5 636 570 1 99.3% 100.0% 100.0% 99.3% 0.01 8.40 0.00 --
21940 2018:296:21:10:26.303 3 93.6 404.5 2586 2523 1 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21941 2018:296:22:42:16.303 3 94.4 453.1 638 573 0 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21942 2018:296:23:07:26.303 3 141.8 404.6 636 573 2 98.8% 100.0% 100.0% 98.8% 0.02 8.40 0.00 --
21943 2018:296:23:32:36.303 4 94.4 355.7 638 574 0 99.7% 100.0% 100.0% 99.7% 0.02 8.40 0.00 --
21944 2018:296:23:57:46.303 3 47.4 404.0 636 579 0 100.0% 100.0% 100.0% 100.0% 0.02 8.39 0.00 --
21945 2018:297:00:22:56.303 3 94.9 404.2 2587 2527 1 100.0% 100.0% 100.0% 100.0% 0.02 8.40 0.00 --
22800 2019:324:05:50:15.385 4 395.4 61.6 7466 7340 8 99.2% 100.0% 100.0% 99.2% 0.03 8.39 0.00 --
22801 2019:324:10:46:46.066 4 395.6 57.8 2583 2503 3 98.9% 100.0% 100.0% 98.9% 0.03 8.39 0.00 --
22802 2019:324:12:19:26.666 4 395.3 56.6 7510 7315 6 98.0% 100.0% 100.0% 98.0% 0.04 8.39 0.00 --
29278 2024:068:17:42:50.218 3 81.5 -381.0 2646 2588 0 100.0% 100.0% 100.0% 100.0% 0.05 8.42 0.00 --
29315 2024:069:01:40:07.869 3 111.7 -372.2 2527 2463 2 99.9% 100.0% 100.0% 99.8% 0.03 8.43 0.00 --
29316 2024:069:08:54:36.515 3 114.7 -370.9 2406 2347 2 100.0% 100.0% 100.0% 100.0% 0.03 8.43 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.