MOA 2023-BLG-331

Event Parameters

Internal ID:gb14-R-3-91447
Discovery date:2023-07-24T10:56:04
RA:18:03:53.19
Dec:-27:39:08.30
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
30289 18:03:52.95 -27:39:08.28 17.98 ± 0.17 3.95
30347 18:03:53.03 -27:39:06.21 19.37 ± 0.46 3.13
30440 18:03:53.21 -27:39:08.24 18.26 ± 0.16 0.65
30441 18:03:53.20 -27:39:03.44 16.47 ± 0.07 4.43
30555 18:03:53.38 -27:39:10.90 18.31 ± 0.20 3.89
30556 18:03:53.38 -27:39:04.05 19.98 ± 0.52 4.31
30632 18:03:53.54 -27:39:09.51 17.75 ± 0.10 4.66

Last 5 photometry measurements

Observation dateI magseeing
2460611.889 (2024-Oct-28.389) 17.68 ± 0.22 4.55
2460611.902 (2024-Oct-28.402) 18.41 ± 0.23 3.82
2460611.913 (2024-Oct-28.413) 16.62 ± 0.20 5.13
2460611.924 (2024-Oct-28.424) 17.80 ± 0.53 5.03
2460614.877 (2024-Oct-31.377) 18.55 ± 0.85 5.03

Calibration: I = 27.40 - 2.5 log10(ΔF + 4520.64)

Single lens fit parameters

tmax =JD 2460150.24 ± 0.02 UT (2023-Jul-24.74)
tE =4.92 ± 1.24 days
u0 =0.2270 ± 0.0620
Ibase =18.76 ± 0.27

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice