MOA 2017-BLG-031

Event Parameters

Internal ID:gb9-R-2-154947
Discovery date:2017-02-16T17:58:52
RA:17:57:37.14
Dec:-28:45:22.67
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
54221 17:57:36.95 -28:45:22.69 18.06 ± 0.13 3.30
54283 17:57:37.10 -28:45:18.24 16.77 ± 0.07 4.22
54317 17:57:37.23 -28:45:21.94 15.63 ± 0.04 0.62
54365 17:57:37.38 -28:45:22.11 15.01 ± 0.04 2.66

Last 5 photometry measurements

Observation dateI magseeing
2460611.919 (2024-Oct-28.419) 15.96 ± 0.10 5.94
2460611.928 (2024-Oct-28.428) 15.68 ± 0.02 5.05
2460614.863 (2024-Oct-31.363) 15.75 ± 0.04 5.30
2460614.869 (2024-Oct-31.369) 15.68 ± 0.04 5.43
2460614.873 (2024-Oct-31.373) 15.86 ± 0.05 5.62

Calibration: I = 27.40 - 2.5 log10(ΔF + 50815.94)

Single lens fit parameters

tmax =JD 2457921.19 ± 0.05 UT (2017-Jun-16.69)
tE =17.95 ± 0.03 days
u0 =6.2493 ± 0.0024
Ibase =7.83 ± 0.30

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice