AGASC ID 8398800

Info

Last Obs. 2024:069:08:54
magcatalog 8.67 ± 0.10
mag3 arcsec 8.69 ± 0.02
mag5 arcsec 8.69 ± 0.02
Nobs 29 (0 bad)
fok 98.6%
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 mag100s ⟨ mag ⟩ σmag Comments
61021 2002:269:06:33:37.702 0 285.5 299.8 2788 2734 5 100.0% 99.9% 100.0% 99.9% 0.02 8.69 0.00 --
61020 2002:269:10:06:47.702 0 285.9 299.5 4110 4062 4 99.9% 100.0% 100.0% 99.9% 0.02 8.69 0.00 --
21911 2018:295:01:19:28.397 7 -243.6 71.0 5019 4913 5 98.9% 100.0% 100.0% 98.9% 0.03 8.69 0.00 --
21913 2018:295:04:50:06.899 6 -219.4 71.5 631 571 1 98.6% 100.0% 100.0% 98.6% 0.05 8.70 0.00 --
21914 2018:295:05:15:16.899 7 -243.5 47.8 634 577 0 100.0% 100.0% 100.0% 100.0% 0.02 8.70 0.00 --
21915 2018:295:05:40:26.899 7 -267.5 72.3 630 575 2 99.1% 100.0% 100.0% 99.1% 0.03 8.70 0.00 --
21916 2018:295:06:05:36.899 7 -243.4 72.1 2582 2480 2 98.1% 100.0% 100.0% 98.1% 0.03 8.69 0.00 --
21917 2018:295:07:37:26.899 7 -243.3 120.6 633 568 0 98.3% 100.0% 100.0% 98.3% 0.04 8.69 0.00 --
21918 2018:295:08:02:36.899 7 -195.2 71.9 633 573 0 99.5% 100.0% 100.0% 99.5% 0.02 8.70 0.00 --
21920 2018:295:08:52:56.899 7 -291.5 73.3 631 571 1 99.0% 100.0% 100.0% 99.0% 0.03 8.70 0.00 --
21921 2018:295:09:18:06.899 7 -243.3 72.8 2583 2498 6 98.7% 100.0% 100.0% 98.7% 0.03 8.69 0.00 --
21934 2018:295:10:49:56.899 7 -243.2 73.2 5021 4865 4 97.9% 100.0% 100.0% 97.9% 0.03 8.69 0.00 --
21935 2018:296:16:25:34.610 7 -241.6 79.9 5024 4851 4 97.6% 100.0% 100.0% 97.6% 0.04 8.69 0.00 --
21936 2018:296:19:29:46.303 7 -241.4 104.7 635 571 0 99.0% 100.0% 100.0% 99.0% 0.03 8.69 0.00 --
21937 2018:296:19:54:56.303 6 -217.3 80.4 633 572 1 99.1% 100.0% 100.0% 99.1% 0.02 8.69 0.00 --
21938 2018:296:20:20:06.303 7 -241.4 56.7 631 577 1 99.5% 100.0% 100.0% 99.5% 0.03 8.69 0.00 --
21939 2018:296:20:45:16.303 6 -265.4 81.2 632 573 1 99.8% 99.8% 100.0% 99.7% 0.04 8.69 0.00 --
21940 2018:296:21:10:26.303 7 -241.3 81.0 2582 2505 1 99.0% 100.0% 100.0% 99.0% 0.03 8.68 0.00 --
21941 2018:296:22:42:16.303 7 -241.1 129.6 635 568 0 98.8% 100.0% 100.0% 98.8% 0.03 8.69 0.00 --
21942 2018:296:23:07:26.303 7 -193.0 80.9 633 578 0 99.7% 100.0% 100.0% 99.7% 0.02 8.69 0.00 --
21943 2018:296:23:32:36.303 7 -241.2 33.5 632 562 0 97.6% 100.0% 100.0% 97.6% 0.02 8.69 0.00 --
21944 2018:296:23:57:46.303 6 -289.3 82.3 633 574 0 99.1% 100.0% 100.0% 99.1% 0.02 8.69 0.00 --
21945 2018:297:00:22:56.303 7 -241.0 81.8 2585 2490 3 98.5% 100.0% 100.0% 98.5% 0.03 8.68 0.00 --
22800 2019:324:05:50:15.385 6 -27.8 255.2 7464 7245 6 97.9% 100.0% 100.0% 97.9% 0.04 8.69 0.00 --
22801 2019:324:10:46:46.066 6 -25.6 255.5 2580 2446 3 96.6% 100.0% 100.0% 96.6% 0.03 8.69 0.00 --
22802 2019:324:12:19:26.666 7 -25.3 255.7 7507 7301 8 97.8% 100.0% 100.0% 97.8% 0.04 8.69 0.00 --
29278 2024:068:17:42:50.218 5 226.1 61.4 2652 2588 1 100.0% 100.0% 100.0% 100.0% 0.04 8.73 0.00 --
29315 2024:069:01:40:07.869 5 221.1 80.2 2530 2466 1 100.0% 100.0% 100.0% 100.0% 0.05 8.72 0.00 --
29316 2024:069:08:54:36.515 5 220.2 82.4 2409 2344 2 99.9% 100.0% 100.0% 99.8% 0.04 8.72 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.