MOA 2021-BLG-439

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Event Parameters

Internal ID:	gb4-R-2-107081
Discovery date:	2021-10-15T20:06:27
RA:	17:52:30.08
Dec:	-30:47:54.40
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
25797	17:52:29.77	-30:47:53.43	18.43 ± 0.07	4.78
25940	17:52:30.21	-30:47:56.54	14.84 ± 0.06	3.05
25941	17:52:30.22	-30:47:51.87	17.02 ± 0.05	2.36

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.944 (2024-Sep-19.444)	99.99 ± 99.99	3.90
2460572.954 (2024-Sep-19.454)	99.99 ± 99.99	3.67
2460572.966 (2024-Sep-19.466)	99.99 ± 99.99	6.50
2460574.031 (2024-Sep-20.531)	99.99 ± 99.99	4.87
2460575.919 (2024-Sep-22.419)	99.99 ± 99.99	4.55

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

Single lens fit parameters

t_max	=	JD 2459496.90	±	0.00 UT (2021-Oct-9.40)
t_E	=	11.57	±	0.00 days
u₀	=	0.0052	±	0.0005
I_base	=	20.65	±	0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice