ACA Magnitude Statistics

2026:271:00:00:00.000 Update Report

Time range 2026:240:22:52:42.933 – 2026:270:22:52:42.932
New Stars 11
Updated Stars 18
Magnitude not Updated 36
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
255066136 2026:263 1 100.0% 99.8% 100.0% 8.80 ± 0.02 8.84 ± 0.03 0.04 2.16 – – 1.71
255072216 2026:263 1 100.0% 100.0% 100.0% 8.73 ± 0.02 8.78 ± 0.03 0.05 2.48 – – 0.35
255072584 2026:263 1 99.9% 99.8% 99.9% 8.73 ± 0.02 8.76 ± 0.03 0.04 1.81 – – 0.70
459669760 2026:265 1 100.0% 100.0% 100.0% 8.70 ± 0.02 8.75 ± 0.03 0.05 2.40 – – 0.70
459684344 2026:265 1 100.0% 100.0% 100.0% 8.71 ± 0.02 8.77 ± 0.03 0.06 2.98 – – 1.21
611196168 2026:264 1 99.9% 94.6% 99.9% 10.38 ± 0.02 10.33 ± 0.06 -0.06 -2.84 – – 0.88
611198048 2026:264 1 98.2% 89.4% 99.7% 10.14 ± 0.02 10.14 ± 0.05 0.00 0.01 – – 1.20
688654992 2026:264 1 99.7% 99.5% 100.0% 9.54 ± 0.02 9.60 ± 0.04 0.06 2.98 – – 1.33
688658512 2026:264 1 99.7% 93.9% 99.9% 9.60 ± 0.02 9.67 ± 0.04 0.07 3.33 – – 0.88
1034973816 2026:264 1 99.9% 99.9% 100.0% 8.13 ± 0.02 8.19 ± 0.03 0.06 2.89 – – 2.36
1035086440 2026:264 1 99.9% 99.9% 100.0% 6.54 ± 0.15 7.41 ± 0.03 0.87 5.77 – – 4.59

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
182864056 2026:265 2 100.0% 100.0% 100.0% 6.60 ± 0.02 6.62 ± 0.03 0.02 0.95 0.05 0.00 0.85
182865792 2026:265 8 100.0% 100.0% 100.0% 6.93 ± 0.02 6.97 ± 0.03 0.04 1.78 0.01 -0.00 0.35
182867304 2026:265 7 100.0% 100.0% 100.0% 6.63 ± 0.02 6.66 ± 0.03 0.04 1.81 -0.01 0.00 0.22
255075704 2026:263 4 99.7% 99.7% 100.0% 8.02 ± 0.02 8.04 ± 0.04 0.02 1.08 0.06 0.01 1.57
611192744 2026:264 3 97.9% 87.3% 99.6% 9.53 ± 0.02 9.59 ± 0.05 0.06 2.84 -0.02 -0.01 0.65
611197416 2026:264 4 93.9% 91.9% 99.9% 9.57 ± 0.02 9.57 ± 0.06 0.00 0.22 0.02 0.01 1.25
611583208 2026:264 4 99.7% 99.5% 100.0% 8.62 ± 0.02 8.65 ± 0.04 0.03 1.59 0.01 0.01 1.29
612505072 2026:264 9 99.9% 99.6% 100.0% 8.58 ± 0.02 8.63 ± 0.04 0.04 2.13 0.01 -0.00 0.74
688264160 2026:264 2 99.9% 99.8% 100.0% 8.00 ± 0.02 8.02 ± 0.05 0.02 1.19 0.03 0.02 0.39
688265424 2026:264 2 96.8% 96.0% 100.0% 10.02 ± 0.02 10.03 ± 0.06 0.01 0.75 0.03 0.02 1.25
688655416 2026:264 2 99.8% 99.8% 100.0% 8.92 ± 0.02 9.01 ± 0.03 0.09 4.47 0.01 -0.00 0.65
688656056 2026:264 3 99.9% 99.8% 100.0% 8.91 ± 0.02 8.96 ± 0.04 0.04 2.21 0.02 0.01 1.41
688659024 2026:264 2 99.9% 99.9% 100.0% 8.25 ± 0.02 8.28 ± 0.04 0.03 1.44 0.01 0.01 0.68
688661456 2026:264 3 99.9% 99.9% 100.0% 7.47 ± 0.02 7.50 ± 0.03 0.04 1.82 0.02 0.00 0.14
896011832 2026:263 30 99.5% 99.5% 100.0% 8.56 ± 0.02 8.57 ± 0.04 0.01 0.67 0.01 0.00 1.57
1034969896 2026:264 2 99.9% 99.9% 100.0% 8.42 ± 0.02 8.46 ± 0.03 0.03 1.72 0.03 0.00 1.22
1035076472 2026:264 2 100.0% 100.0% 100.0% 6.73 ± 0.02 6.76 ± 0.03 0.02 1.20 0.05 0.00 1.70
1035081392 2026:264 2 99.9% 99.8% 100.0% 7.91 ± 0.02 7.93 ± 0.04 0.03 1.31 0.02 0.01 1.21

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
154534448 2026:263 8 99.9% 99.5% 100.0% 9.57 ± 0.02 9.61 ± 0.04 0.03 1.67 0.00 0.00 1.18
154534888 2026:263 18 99.5% 99.5% 100.0% 9.16 ± 0.02 9.23 ± 0.04 0.07 3.54 0.00 0.00 1.85
154535176 2026:263 18 99.6% 99.6% 100.0% 8.78 ± 0.02 8.84 ± 0.04 0.06 2.82 0.00 0.00 0.51
154537120 2026:263 15 99.9% 99.4% 100.0% 9.34 ± 0.02 9.41 ± 0.05 0.07 3.60 0.00 0.00 0.76
154664976 2026:263 5 99.9% 99.1% 100.0% 9.52 ± 0.03 9.56 ± 0.04 0.04 1.18 0.00 0.00 1.84
182861632 2026:265 13 100.0% 100.0% 100.0% 7.03 ± 0.02 7.02 ± 0.03 -0.02 -0.81 0.00 0.00 0.38
182863216 2026:265 6 100.0% 100.0% 100.0% 7.04 ± 0.02 7.04 ± 0.03 -0.00 -0.04 0.00 0.00 0.27
255069632 2026:263 4 99.9% 99.9% 100.0% 7.67 ± 0.02 7.70 ± 0.03 0.03 1.65 0.00 0.00 0.43
373817952 2026:265 239 99.7% 99.6% 100.0% 8.73 ± 0.02 8.76 ± 0.04 0.03 1.38 0.00 0.00 1.53
373826120 2026:265 114 99.5% 99.5% 100.0% 8.89 ± 0.02 8.91 ± 0.04 0.02 0.89 0.00 0.00 1.29
374357808 2026:264 197 99.8% 99.7% 100.0% 8.66 ± 0.02 8.69 ± 0.04 0.03 1.43 0.00 0.00 1.25
375534552 2026:265 170 99.8% 99.8% 100.0% 8.18 ± 0.02 8.22 ± 0.04 0.04 1.86 0.00 0.00 0.17
376057824 2026:265 224 99.8% 99.8% 100.0% 8.32 ± 0.02 8.35 ± 0.04 0.04 1.76 0.00 0.00 0.54
376070040 2026:265 241 99.8% 99.8% 100.0% 8.40 ± 0.02 8.43 ± 0.04 0.03 1.56 0.00 0.00 0.36
459540160 2026:265 2 100.0% 100.0% 100.0% 7.03 ± 0.02 7.08 ± 0.03 0.05 2.60 0.00 0.00 1.61
459541368 2026:265 2 100.0% 100.0% 100.0% 7.30 ± 0.02 7.33 ± 0.03 0.03 1.49 0.00 0.00 2.03
459681600 2026:265 2 100.0% 100.0% 100.0% 8.17 ± 0.02 8.21 ± 0.03 0.04 2.00 0.00 0.00 0.28
611198896 2026:264 4 99.6% 99.5% 100.0% 7.79 ± 0.02 7.81 ± 0.04 0.01 0.69 0.00 0.00 1.17
611198992 2026:264 4 99.4% 99.4% 100.0% 8.09 ± 0.02 8.11 ± 0.04 0.01 0.67 0.00 0.00 1.24
611199016 2026:264 4 100.0% 100.0% 100.0% 6.94 ± 0.02 6.93 ± 0.03 -0.01 -0.47 0.00 0.00 1.15
612369216 2026:264 9 99.8% 99.8% 100.0% 8.48 ± 0.02 8.52 ± 0.04 0.04 1.90 0.00 0.00 0.49
612370696 2026:264 6 99.9% 99.0% 100.0% 9.41 ± 0.02 9.46 ± 0.04 0.06 2.80 0.00 0.00 1.30
612371080 2026:264 5 99.9% 99.1% 100.0% 9.52 ± 0.02 9.55 ± 0.05 0.04 1.80 0.00 0.00 0.49
612892704 2026:264 5 100.0% 99.9% 100.0% 8.61 ± 0.02 8.70 ± 0.03 0.09 4.47 0.00 0.00 1.65
896009152 2026:263 136 99.9% 99.9% 100.0% 7.28 ± 0.02 7.26 ± 0.03 -0.01 -0.68 0.00 0.00 0.28
896013040 2026:263 120 100.0% 100.0% 100.0% 7.32 ± 0.02 7.30 ± 0.03 -0.02 -0.83 0.00 0.00 1.04
896014528 2026:263 128 99.9% 99.9% 100.0% 7.64 ± 0.02 7.65 ± 0.03 0.01 0.44 0.00 0.00 2.21
897717296 2026:263 76 99.7% 99.7% 100.0% 8.22 ± 0.02 8.23 ± 0.03 0.02 0.87 0.00 0.00 1.59
1034975032 2026:264 8 99.7% 99.7% 100.0% 8.17 ± 0.02 8.21 ± 0.04 0.03 1.64 0.00 0.00 -0.03
1035079304 2026:264 3 100.0% 99.9% 100.0% 7.79 ± 0.03 7.86 ± 0.06 0.08 2.52 0.00 0.00 3.12
1035087456 2026:264 14 99.9% 99.9% 100.0% 7.39 ± 0.02 7.40 ± 0.03 0.01 0.44 0.00 0.00 1.16
1169555800 2026:264 8 99.5% 99.5% 100.0% 8.48 ± 0.02 8.51 ± 0.04 0.04 1.83 0.00 0.00 1.16
1169556880 2026:264 18 99.8% 99.8% 100.0% 8.94 ± 0.02 8.96 ± 0.04 0.02 1.05 0.00 0.00 0.83
1169557456 2026:264 6 99.9% 99.9% 100.0% 8.55 ± 0.02 8.61 ± 0.04 0.06 3.06 0.00 0.00 2.48
1203245384 2026:264 20 99.8% 99.8% 100.0% 8.53 ± 0.02 8.55 ± 0.03 0.02 0.99 0.00 0.00 1.52
1203256784 2026:264 6 100.0% 100.0% 100.0% 8.10 ± 0.08 8.04 ± 0.10 -0.07 -0.83 0.00 0.00 3.14

  • 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.