MOA 2021-BLG-457

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Event Parameters

Internal ID:	gb4-R-4-36944
Discovery date:	2021-10-29T12:55:51
RA:	17:52:34.21
Dec:	-31:23:22.74
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
28302	17:52:33.97	-31:23:21.14	17.89 ± 0.09	3.94
28415	17:52:34.28	-31:23:26.74	18.48 ± 0.13	4.77
28416	17:52:34.28	-31:23:21.85	18.46 ± 0.19	0.42
28486	17:52:34.49	-31:23:25.54	15.66 ± 0.05	4.67
28505	17:52:34.53	-31:23:21.46	18.18 ± 0.12	3.74

Last 5 photometry measurements

Observation date	I mag	seeing
2460611.899 (2024-Oct-28.399)	18.26 ± 0.17	4.61
2460611.911 (2024-Oct-28.411)	18.08 ± 0.22	4.75
2460611.921 (2024-Oct-28.421)	18.65 ± 0.47	4.99
2460611.930 (2024-Oct-28.430)	19.11 ± 0.43	4.67
2460614.875 (2024-Oct-31.375)	20.21 ± 2.00	4.88

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 3770.51)

Single lens fit parameters

t_max	=	JD 2459516.98	±	0.04 UT (2021-Oct-29.48)
t_E	=	80.77	±	4.54 days
u₀	=	0.0231	±	0.0015
I_base	=	20.34	±	0.21

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice