MOA 2017-BLG-031

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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

starID	RA	Dec	mag	separation
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 date	I mag	seeing
2460246.884 (2023-Oct-29.384)	15.65 ± 0.02	3.59
2460246.896 (2023-Oct-29.396)	16.33 ± 0.23	3.05
2460246.906 (2023-Oct-29.406)	15.67 ± 0.02	3.50
2460246.918 (2023-Oct-29.418)	15.67 ± 0.02	3.62
2460246.927 (2023-Oct-29.427)	15.59 ± 0.02	3.53

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

Single lens fit parameters

t_max	=	JD 2457921.19	±	0.05 UT (2017-Jun-16.69)
t_E	=	17.95	±	0.03 days
u₀	=	6.2493	±	0.0024
I_base	=	7.83	±	0.30

External data

Gzipped FITS finder chart

All photometry data

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