AGASC ID 8395104

Info

Last Obs. 2024:069:08:54
magcatalog 8.64 ± 0.10
mag3 arcsec 8.66 ± 0.01
mag5 arcsec 8.66 ± 0.01
Nobs 32 (1 bad)
fok 98.7%
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 3 372.4 -64.7 2806 2705 2 98.3% 100.0% 100.0% 98.3% 0.02 8.67 0.00 --
61020 2002:269:10:06:47.702 3 372.3 -65.1 4112 4062 1 99.9% 100.0% 100.0% 99.9% 0.02 8.67 0.00 --
52355 2014:299:20:20:03.642 0 -412.4 446.3 6516 6380 44 98.5% 99.9% 100.0% 98.4% 0.03 8.65 0.00 --
51427 2015:344:17:20:27.898 0 -160.0 -440.0 1817 1772 2 99.8% 100.0% 100.0% 99.8% 0.03 8.64 0.00 --
21911 2018:295:01:19:28.397 6 -293.9 -300.8 5017 4919 4 99.0% 100.0% 100.0% 99.0% 0.03 8.65 0.00 --
21912 2018:295:04:24:56.899 5 -294.6 -275.8 629 572 0 99.1% 100.0% 100.0% 99.1% 0.02 8.65 0.00 --
21913 2018:295:04:50:06.899 4 -270.3 -300.1 629 577 0 99.7% 100.0% 100.0% 99.7% 0.02 8.65 0.00 --
21914 2018:295:05:15:16.899 5 -295.2 -324.0 630 564 1 97.7% 100.0% 100.0% 97.7% 0.02 8.65 0.00 --
21915 2018:295:05:40:26.899 5 -319.7 -299.4 628 573 0 98.8% 76.8% 99.5% 75.9% 1.79 9.30 0.02 Magnitude changes within observation. Bad pixel reg
21916 2018:295:06:05:36.899 6 -295.3 -299.5 2580 2488 2 98.4% 100.0% 100.0% 98.4% 0.03 8.65 0.00 --
21917 2018:295:07:37:26.899 5 -295.5 -250.6 631 569 1 98.4% 100.0% 100.0% 98.4% 0.02 8.65 0.00 --
21918 2018:295:08:02:36.899 4 -246.8 -299.4 633 573 0 99.5% 100.0% 100.0% 99.5% 0.03 8.66 0.00 --
21919 2018:295:08:27:46.899 6 -296.3 -347.4 631 563 0 97.6% 100.0% 100.0% 97.6% 0.03 8.65 0.00 --
21920 2018:295:08:52:56.899 5 -345.4 -298.3 628 574 0 99.5% 100.0% 100.0% 99.5% 0.02 8.66 0.00 --
21921 2018:295:09:18:06.899 6 -296.3 -298.6 2581 2487 2 98.3% 100.0% 100.0% 98.3% 0.02 8.65 0.00 --
21934 2018:295:10:49:56.899 6 -296.7 -298.2 5019 4917 4 99.0% 100.0% 100.0% 99.0% 0.03 8.65 0.00 --
21935 2018:296:16:25:34.610 6 -305.5 -289.8 5019 4920 4 99.0% 100.0% 100.0% 99.0% 0.02 8.65 0.00 --
21936 2018:296:19:29:46.303 5 -306.3 -264.7 632 573 0 99.3% 100.0% 100.0% 99.3% 0.03 8.66 0.00 --
21937 2018:296:19:54:56.303 4 -282.0 -289.0 630 568 1 98.4% 100.0% 100.0% 98.4% 0.02 8.65 0.00 --
21938 2018:296:20:20:06.303 5 -306.9 -312.9 628 575 1 99.1% 100.0% 100.0% 99.1% 0.03 8.65 0.00 --
21939 2018:296:20:45:16.303 5 -331.5 -288.3 629 558 2 97.2% 100.0% 100.0% 97.2% 0.02 8.66 0.00 --
21940 2018:296:21:10:26.303 6 -307.0 -288.4 2579 2496 3 98.7% 100.0% 100.0% 98.6% 0.03 8.65 0.00 --
21941 2018:296:22:42:16.303 5 -307.2 -239.5 631 559 0 97.2% 100.0% 100.0% 97.2% 0.02 8.65 0.00 --
21942 2018:296:23:07:26.303 4 -258.5 -288.3 632 579 1 99.8% 100.0% 100.0% 99.8% 0.02 8.65 0.00 --
21944 2018:296:23:57:46.303 4 -357.2 -287.0 629 573 0 99.0% 100.0% 100.0% 99.0% 0.03 8.65 0.00 --
21945 2018:297:00:22:56.303 6 -308.1 -287.3 2580 2477 5 98.0% 100.0% 100.0% 97.9% 0.03 8.65 0.00 --
22800 2019:324:05:50:15.385 5 -395.9 181.6 7459 7263 11 98.2% 100.0% 100.0% 98.2% 0.05 8.67 0.00 --
22801 2019:324:10:46:46.066 5 -394.5 185.4 2578 2505 5 98.9% 99.9% 100.0% 98.9% 0.04 8.67 0.00 --
22802 2019:324:12:19:26.666 5 -394.3 187.0 7505 7293 6 97.7% 100.0% 100.0% 97.7% 0.04 8.67 0.00 --
29278 2024:068:17:42:50.218 4 111.3 418.6 2647 2587 3 100.0% 100.0% 100.0% 100.0% 0.05 8.68 0.00 --
29315 2024:069:01:40:07.869 4 78.7 427.3 2525 2463 0 99.9% 100.0% 100.0% 99.9% 0.05 8.67 0.00 --
29316 2024:069:08:54:36.515 4 74.7 428.2 2403 2345 1 99.9% 99.9% 100.0% 99.8% 0.04 8.67 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.