MOA 2019-BLG-331

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Event Parameters

Internal ID:	gb9-R-4-79485
Discovery date:	2019-07-21T18:51:20
RA:	17:59:47.51
Dec:	-29:28:47.59
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
172742	17:59:47.42	-29:28:49.50	17.08 ± 0.07	3.20
172743	17:59:47.45	-29:28:46.64	18.99 ± 0.16	1.54
172851	17:59:47.67	-29:28:50.08	16.45 ± 0.09	3.54
172922	17:59:47.77	-29:28:43.17	17.57 ± 0.08	4.91
172948	17:59:47.83	-29:28:44.87	18.32 ± 0.12	4.34

Last 5 photometry measurements

Observation date	I mag	seeing
2460246.884 (2023-Oct-29.384)	19.41 ± 0.51	3.44
2460246.896 (2023-Oct-29.396)	20.20 ± 0.95	3.08
2460246.906 (2023-Oct-29.406)	20.32 ± 1.47	3.44
2460246.918 (2023-Oct-29.418)	99.99 ± 99.99	3.51
2460246.927 (2023-Oct-29.427)	99.99 ± 99.99	3.54

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 0.00)

Single lens fit parameters

t_max	=	JD 2458685.10	±	0.01 UT (2019-Jul-20.60)
t_E	=	4099.23	±	3494.57 days
u₀	=	0.0002	±	0.0011
I_base	=	26.21	±	0.21

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice