MOA 2018-BLG-031

Event Parameters

Internal ID:gb9-R-1-134656
Discovery date:2018-02-25T18:42:07
RA:17:59:27.02
Dec:-28:36:36.59
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
56701 17:59:26.80 -28:36:36.93 15.32 ± 0.05 3.72
56745 17:59:26.93 -28:36:39.88 15.84 ± 0.07 4.46
56764 17:59:26.95 -28:36:33.39 17.10 ± 0.07 3.19
56808 17:59:27.07 -28:36:36.33 15.77 ± 0.06 0.35
56898 17:59:27.20 -28:36:39.94 15.11 ± 0.12 4.55
56921 17:59:27.27 -28:36:32.19 17.22 ± 0.09 4.88

Last 5 photometry measurements

Observation dateI magseeing
2460246.884 (2023-Oct-29.384) 15.84 ± 0.03 3.70
2460246.896 (2023-Oct-29.396) 15.82 ± 0.03 3.51
2460246.906 (2023-Oct-29.406) 15.77 ± 0.03 3.67
2460246.918 (2023-Oct-29.418) 15.84 ± 0.03 3.77
2460246.927 (2023-Oct-29.427) 15.80 ± 0.04 3.61

Calibration: I = 27.40 - 2.5 log10(ΔF + 44957.28)

Single lens fit parameters

tmax =JD 2458228.93 ± 0.00 UT (2018-Apr-20.43)
tE =73.90 ± 0.22 days
u0 =0.0886 ± 0.0004
Ibase =15.90 ± 0.29

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice