MOA 2022-BLG-250

Event Parameters

Internal ID:gb5-R-5-251382
Discovery date:2022-05-23T06:27:18
RA:17:52:43.29
Dec:-30:03:05.27
Current assessment:microlensing
A transient event found by MOA. Alerted late because the photometry needed careful checking.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
39409 17:52:43.05 -30:03:01.89 14.06 ± 0.07 4.85
39460 17:52:43.18 -30:03:08.06 17.23 ± 0.08 4.18
39542 17:52:43.40 -30:03:02.59 18.07 ± 0.10 2.39
39596 17:52:43.54 -30:03:07.79 17.15 ± 0.07 4.23

Last 5 photometry measurements

Observation dateI magseeing
2460246.848 (2023-Oct-29.348) 99.99 ± 99.99 3.87
2460246.883 (2023-Oct-29.383) 99.99 ± 99.99 3.63
2460246.895 (2023-Oct-29.395) 99.99 ± 99.99 3.55
2460246.905 (2023-Oct-29.405) 22.77 ± 12.64 3.32
2460246.917 (2023-Oct-29.417) 20.07 ± 1.03 3.39

Calibration: I = 27.40 - 2.5 log10(ΔF + 0.00)

Single lens fit parameters

tmax =JD 2459712.00 ± 0.01 UT (2022-May-12.50)
tE =5.75 ± 0.22 days
u0 =0.1265 ± 0.0072
Ibase =18.36 ± 0.24

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice