MOA 2021-BLG-431

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Event Parameters

Internal ID:	gb7-R-1-57049
Discovery date:	2021-10-13T13:16:11
RA:	17:59:40.43
Dec:	-32:00:38.78
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
97994	17:59:40.40	-32:00:42.28	17.24 ± 0.04	4.45
98030	17:59:40.51	-32:00:38.10	18.10 ± 0.16	0.41
98057	17:59:40.55	-32:00:42.77	17.81 ± 0.06	4.93

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.923 (2024-Sep-19.423)	18.23 ± 0.16	3.93
2460572.960 (2024-Sep-19.460)	18.23 ± 0.32	5.04
2460573.018 (2024-Sep-19.518)	18.23 ± 0.46	4.78
2460574.029 (2024-Sep-20.529)	18.93 ± 0.55	4.93
2460574.041 (2024-Sep-20.541)	18.08 ± 0.37	4.89

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 5238.42)

Single lens fit parameters

t_max	=	JD 2459506.16	±	0.08 UT (2021-Oct-18.66)
t_E	=	19.21	±	2.74 days
u₀	=	0.4282	±	0.0781
I_base	=	17.44	±	0.15

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice