ACA Magnitude Statistics

2026:306:00:00:00.000 Update Report

Time range 2026:275:23:52:37.244 – 2026:305:23:52:37.243
New Stars 35
Updated Stars 18
Magnitude not Updated 7
Failures 0

New Stars

These are stars that are being added to the supplement.

AGASC ID Last Obs nobs nbad nfail fok fmag est ok 3 f5 arcsec magcatalog magobs δmag cat δmag/σmag δmag δσ color
82579168 2026:299 1 100.0% 100.0% 100.0% 9.28 ± 0.02 9.32 ± 0.03 0.04 1.93 – – 0.69
82579392 2026:299 1 100.0% 100.0% 100.0% 9.51 ± 0.02 9.54 ± 0.03 0.03 1.34 – – 1.21
82582928 2026:299 1 100.0% 99.6% 100.0% 9.91 ± 0.02 9.92 ± 0.03 0.01 0.74 – – 2.57
83625912 2026:298 1 99.9% 99.9% 100.0% 8.52 ± 0.02 8.57 ± 0.03 0.05 2.45 – – 1.41
84152168 2026:298 1 99.9% 99.9% 100.0% 9.60 ± 0.02 9.69 ± 0.04 0.09 4.72 – – 0.69
84152600 2026:298 1 100.0% 100.0% 100.0% 7.38 ± 0.02 7.41 ± 0.03 0.03 1.46 – – 1.21
84546064 2026:298 1 99.9% 99.0% 100.0% 9.77 ± 0.02 9.80 ± 0.04 0.03 1.36 – – 1.30
84546128 2026:298 1 99.8% 99.8% 100.0% 9.34 ± 0.02 9.48 ± 0.04 0.13 6.66 – – 1.53
84546792 2026:298 1 99.9% 99.9% 100.0% 9.75 ± 0.02 9.79 ± 0.04 0.05 2.25 – – 1.38
84549920 2026:298 1 99.9% 99.9% 100.0% 9.31 ± 0.02 9.38 ± 0.03 0.06 3.16 – – 1.26
84550480 2026:298 1 99.9% 99.8% 100.0% 9.14 ± 0.02 9.20 ± 0.03 0.06 3.05 – – 0.91
108794440 2026:297 1 99.9% 99.9% 100.0% 8.76 ± 0.02 8.80 ± 0.03 0.04 2.01 – – 1.15
108796032 2026:297 1 98.9% 97.9% 99.3% 10.06 ± 0.02 10.03 ± 0.05 -0.03 -1.67 – – 1.07
108796192 2026:297 1 99.9% 99.9% 100.0% 9.18 ± 0.02 9.23 ± 0.03 0.05 2.36 – – 1.12
109711712 2026:297 1 99.9% 99.7% 100.0% 9.58 ± 0.02 9.60 ± 0.04 0.02 0.85 – – 0.74
159261912 2026:298 2 99.9% 99.9% 100.0% 8.11 ± 0.02 8.15 ± 0.04 0.04 1.91 – – 0.43
185079352 2026:298 1 99.9% 99.9% 100.0% 9.04 ± 0.02 9.13 ± 0.03 0.09 4.50 – – 1.27
185083008 2026:298 1 99.9% 99.9% 100.0% 9.32 ± 0.02 9.40 ± 0.03 0.08 4.18 – – 1.18
720243848 2026:298 1 99.9% 99.9% 100.0% 8.98 ± 0.02 9.01 ± 0.03 0.03 1.57 – – 0.83
720245248 2026:298 1 100.0% 99.9% 100.0% 7.92 ± 0.04 7.94 ± 0.03 0.02 0.44 – – 2.74
720249264 2026:298 1 99.9% 99.9% 100.0% 8.66 ± 0.02 8.71 ± 0.03 0.05 2.44 – – 0.67
720251592 2026:298 1 99.8% 99.7% 100.0% 9.41 ± 0.02 9.42 ± 0.04 0.01 0.41 – – 1.27
720253016 2026:298 1 100.0% 100.0% 100.0% 6.46 ± 0.02 6.47 ± 0.03 0.01 0.69 – – 0.00
996019472 2026:298 1 99.8% 99.6% 100.0% 9.37 ± 0.02 9.49 ± 0.03 0.12 5.90 – – 0.58
996026736 2026:298 1 99.7% 99.7% 100.0% 7.98 ± 0.02 8.02 ± 0.03 0.04 1.95 – – 1.15
996027392 2026:298 1 99.7% 99.6% 100.0% 8.72 ± 0.02 8.79 ± 0.03 0.07 3.50 – – 1.43
996027480 2026:298 1 99.9% 99.9% 100.0% 8.44 ± 0.02 8.49 ± 0.03 0.05 2.56 – – 1.10
996152944 2026:298 1 99.8% 99.7% 100.0% 8.17 ± 0.02 8.23 ± 0.03 0.06 3.22 – – 1.76
1110971472 2026:298 1 98.3% 96.8% 99.9% 9.73 ± 0.02 9.76 ± 0.04 0.03 1.61 – – 0.80
1110971720 2026:298 1 98.2% 97.7% 100.0% 9.15 ± 0.02 9.22 ± 0.03 0.06 3.04 – – 1.23
1110972144 2026:298 1 98.6% 97.7% 99.9% 9.50 ± 0.02 9.54 ± 0.03 0.04 2.08 – – 0.70
1110972168 2026:298 1 98.1% 97.3% 100.0% 9.29 ± 0.02 9.34 ± 0.03 0.05 2.66 – – 0.83
1110973808 2026:298 1 99.0% 99.0% 100.0% 7.98 ± 0.02 8.03 ± 0.03 0.05 2.46 – – 1.25
1110975416 2026:298 1 97.7% 96.6% 99.7% 9.80 ± 0.02 9.82 ± 0.03 0.01 0.63 – – 0.83
1110976448 2026:298 1 97.9% 96.9% 99.9% 9.57 ± 0.02 9.63 ± 0.04 0.06 3.20 – – 1.16

Updated Stars

These are stars that are being updated in the supplement.

AGASC ID Last Obs nobs nbad nfail fok fmag est ok 3 f5 arcsec magcatalog magobs δmag cat δmag/σmag δmag δσ color
82577784 2026:299 3 98.7% 98.6% 99.9% 9.14 ± 0.02 9.17 ± 0.04 0.03 1.41 0.02 0.00 1.34
82585456 2026:299 2 99.7% 99.7% 100.0% 9.30 ± 0.02 9.28 ± 0.04 -0.02 -0.86 0.02 0.00 1.20
84550136 2026:298 3 99.9% 99.9% 100.0% 8.69 ± 0.02 8.73 ± 0.03 0.04 1.99 0.04 -0.01 0.72
159257552 2026:298 3 99.7% 99.6% 100.0% 9.49 ± 0.02 9.50 ± 0.04 0.01 0.65 0.03 0.01 0.74
159261248 2026:298 2 99.8% 99.8% 100.0% 9.44 ± 0.02 9.49 ± 0.04 0.05 2.44 0.03 0.00 0.98
159263296 2026:298 3 99.8% 99.7% 99.9% 9.33 ± 0.02 9.37 ± 0.04 0.04 2.19 0.01 0.01 1.75
159780688 2026:298 3 99.9% 99.9% 100.0% 7.91 ± 0.02 7.91 ± 0.04 -0.00 -0.02 -0.04 0.00 2.55
159781944 2026:298 6 100.0% 100.0% 100.0% 7.62 ± 0.02 7.65 ± 0.03 0.03 1.45 0.01 0.00 1.40
160170064 2026:298 2 99.8% 99.6% 100.0% 9.02 ± 0.02 9.10 ± 0.05 0.08 4.06 0.09 0.01 1.49
160176448 2026:298 4 99.8% 99.8% 100.0% 7.79 ± 0.02 7.82 ± 0.04 0.03 1.51 0.02 0.00 1.41
160180160 2026:298 5 99.7% 99.7% 100.0% 8.80 ± 0.02 8.84 ± 0.04 0.04 2.07 0.04 0.01 0.73
185080792 2026:298 2 99.7% 99.3% 100.0% 9.46 ± 0.02 9.54 ± 0.05 0.08 3.99 0.07 0.02 1.09
185082512 2026:298 4 99.5% 99.5% 100.0% 8.68 ± 0.02 8.74 ± 0.04 0.07 3.31 0.03 -0.00 1.95
720246032 2026:298 2 99.8% 99.8% 100.0% 8.81 ± 0.02 8.84 ± 0.04 0.03 1.52 -0.03 0.00 1.30
720248536 2026:298 2 99.8% 99.8% 100.0% 7.66 ± 0.02 7.69 ± 0.03 0.03 1.52 0.02 -0.00 0.77
996018960 2026:298 5 95.0% 95.0% 100.0% 9.53 ± 0.02 9.53 ± 0.03 -0.00 -0.22 -0.01 -0.00 1.16
996147256 2026:298 5 98.2% 98.2% 100.0% 9.35 ± 0.02 9.36 ± 0.04 0.00 0.25 -0.02 -0.00 0.86
1110971880 2026:298 2 99.0% 98.9% 100.0% 8.37 ± 0.02 8.41 ± 0.03 0.04 2.20 0.03 0.00 0.78

Magnitude not Updated

These are stars whose magnitudes are not being updated in the supplement.

AGASC ID Last Obs nobs nbad nfail fok fmag est ok 3 f5 arcsec magcatalog magobs δmag cat δmag/σmag δmag δσ color
82578448 2026:299 8 99.9% 99.9% 100.0% 7.97 ± 0.02 8.00 ± 0.04 0.02 1.20 0.00 0.00 1.20
82582088 2026:299 6 99.6% 99.6% 100.0% 8.51 ± 0.02 8.54 ± 0.04 0.03 1.62 0.00 0.00 1.23
82584792 2026:299 4 99.4% 99.1% 100.0% 9.09 ± 0.02 9.14 ± 0.04 0.05 2.65 0.00 0.00 0.69
108792368 2026:297 2 99.9% 99.9% 100.0% 8.89 ± 0.02 8.92 ± 0.03 0.03 1.68 0.00 0.00 1.09
185086280 2026:298 3 99.6% 99.5% 100.0% 8.82 ± 0.02 8.86 ± 0.04 0.04 1.98 0.00 0.00 1.32
720251912 2026:298 2 100.0% 100.0% 100.0% 6.77 ± 0.02 6.80 ± 0.03 0.03 1.59 0.00 0.00 0.40
995497520 2026:298 6 99.8% 99.8% 100.0% 9.06 ± 0.02 9.06 ± 0.04 -0.00 -0.17 0.00 0.00 1.15

  • 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.