MOA 2022-BLG-139

Event Parameters

Internal ID:gb4-R-3-83698
Discovery date:2022-04-01T17:17:40
RA:17:51:41.12
Dec:-31:01:05.28
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
16992 17:51:41.01 -31:01:08.18 16.98 ± 0.04 4.19
17038 17:51:41.09 -31:01:02.74 19.30 ± 0.17 2.27
17092 17:51:41.20 -31:01:04.45 17.95 ± 0.07 0.54
17113 17:51:41.29 -31:01:07.21 18.24 ± 0.09 3.08
17159 17:51:41.36 -31:01:05.77 18.59 ± 0.09 2.83

Last 5 photometry measurements

Observation dateI magseeing
2460246.887 (2023-Oct-29.387) 18.15 ± 0.20 3.39
2460246.898 (2023-Oct-29.398) 18.17 ± 0.19 3.07
2460246.909 (2023-Oct-29.409) 18.12 ± 0.20 3.36
2460246.920 (2023-Oct-29.420) 18.47 ± 0.39 3.65
2460246.929 (2023-Oct-29.429) 19.49 ± 1.15 3.59

Calibration: I = 27.40 - 2.5 log10(ΔF + 6053.41)

Single lens fit parameters

tmax =JD 2459671.11 ± 0.01 UT (2022-Apr-1.61)
tE =8.91 ± 0.66 days
u0 =0.0511 ± 0.0039
Ibase =20.41 ± 0.20

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice