MOA 2021-BLG-331

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Event Parameters

Internal ID:	gb9-R-8-72472
Discovery date:	2021-08-20T11:47:33
RA:	18:00:41.91
Dec:	-29:04:41.43
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
67279	18:00:42.13	-29:04:43.23	14.57 ± 0.06	3.79
67304	18:00:42.09	-29:04:40.51	15.58 ± 0.11	3.36
67414	18:00:41.90	-29:04:41.82	17.00 ± 0.11	0.44
67513	18:00:41.69	-29:04:43.62	15.47 ± 0.08	2.92

Last 5 photometry measurements

Observation date	I mag	seeing
2460246.884 (2023-Oct-29.384)	17.81 ± 0.14	3.50
2460246.896 (2023-Oct-29.396)	17.30 ± 0.09	3.18
2460246.906 (2023-Oct-29.406)	17.40 ± 0.11	3.42
2460246.918 (2023-Oct-29.418)	17.65 ± 0.15	3.49
2460246.927 (2023-Oct-29.427)	17.52 ± 0.12	3.51

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 14507.75)

Single lens fit parameters

t_max	=	JD 2459477.13	±	0.00 UT (2021-Sep-19.63)
t_E	=	33.31	±	0.16 days
u₀	=	0.0801	±	0.0005
I_base	=	16.63	±	0.25

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice