MOA 2021-BLG-397

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Event Parameters

Internal ID:	gb8-R-6-10474
Discovery date:	2021-09-18T19:38:15
RA:	18:02:23.07
Dec:	-31:47:29.76
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
93719	18:02:23.28	-31:47:32.36	17.39 ± 0.15	4.12
93799	18:02:23.07	-31:47:31.04	18.56 ± 0.07	1.01
93850	18:02:22.95	-31:47:26.91	15.21 ± 0.08	3.82
93851	18:02:23.01	-31:47:34.03	17.37 ± 0.16	3.92

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.888 (2023-Oct-28.388)	19.02 ± 0.57	3.56
2460245.921 (2023-Oct-28.421)	99.99 ± 99.99	3.50
2460246.858 (2023-Oct-29.358)	18.78 ± 0.41	3.74
2460246.891 (2023-Oct-29.391)	18.81 ± 0.46	3.71
2460246.925 (2023-Oct-29.425)	18.42 ± 0.45	3.39

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 3422.95)

Single lens fit parameters

t_max	=	JD 2459476.03	±	0.02 UT (2021-Sep-18.53)
t_E	=	8.95	±	1.18 days
u₀	=	0.0441	±	0.0079
I_base	=	19.61	±	0.17

External data

Gzipped FITS finder chart

All photometry data

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