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
2460518.907 (2024-Jul-27.407) 15.58 ± 0.01 3.37
2460518.919 (2024-Jul-27.419) 15.60 ± 0.01 3.14
2460518.929 (2024-Jul-27.429) 15.98 ± 0.13 3.86
2460519.045 (2024-Jul-27.545) 15.62 ± 0.01 3.42
2460519.048 (2024-Jul-27.548) 15.63 ± 0.02 3.48

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