MOA 2021-BLG-091

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Event Parameters

Internal ID:	gb13-R-4-64548
Discovery date:	2021-04-19T20:31:43
RA:	18:03:38.62
Dec:	-29:36:16.13
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
18687	18:03:38.46	-29:36:16.95	16.83 ± 0.08	3.09
18688	18:03:38.48	-29:36:14.27	17.94 ± 0.12	2.86
18785	18:03:38.67	-29:36:20.17	16.18 ± 0.06	4.82
18809	18:03:38.72	-29:36:13.42	19.13 ± 0.19	2.40

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.887 (2023-Oct-28.387)	99.99 ± 99.99	3.54
2460245.920 (2023-Oct-28.420)	99.99 ± 99.99	3.92
2460246.857 (2023-Oct-29.357)	20.12 ± 1.01	3.73
2460246.890 (2023-Oct-29.390)	20.67 ± 1.78	3.69
2460246.924 (2023-Oct-29.424)	20.50 ± 1.84	3.79

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

Single lens fit parameters

t_max	=	JD 2459329.12	±	0.05 UT (2021-Apr-24.62)
t_E	=	76.81	±	14.63 days
u₀	=	0.0251	±	0.0092
I_base	=	21.44	±	0.22

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice