MOA 2022-BLG-257

Event Parameters

Internal ID:gb5-R-8-127967
Discovery date:2022-05-23T18:49:09
RA:17:57:01.70
Dec:-29:22:58.19
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
89144 17:57:01.79 -29:23:01.64 15.51 ± 0.10 3.44
89174 17:57:01.75 -29:22:57.75 17.13 ± 0.15 1.59
89246 17:57:01.56 -29:22:58.88 17.94 ± 0.15 1.42
89264 17:57:01.49 -29:22:56.00 15.73 ± 0.09 3.73
89265 17:57:01.52 -29:23:02.96 16.20 ± 0.07 4.75
89314 17:57:01.41 -29:23:00.45 16.88 ± 0.07 3.76
89352 17:57:01.32 -29:22:57.86 16.05 ± 0.02 4.70

Last 5 photometry measurements

Observation dateI magseeing
2460246.848 (2023-Oct-29.348) 17.97 ± 0.21 3.78
2460246.883 (2023-Oct-29.383) 18.17 ± 0.20 3.55
2460246.895 (2023-Oct-29.395) 17.81 ± 0.12 3.42
2460246.905 (2023-Oct-29.405) 18.00 ± 0.20 3.33
2460246.917 (2023-Oct-29.417) 17.74 ± 0.16 3.42

Calibration: I = 27.40 - 2.5 log10(ΔF + 6064.57)

Single lens fit parameters

tmax =JD 2459724.09 ± 0.01 UT (2022-May-24.59)
tE =13.95 ± 1.69 days
u0 =0.0875 ± 0.0141
Ibase =19.88 ± 0.30

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice