MOA 2021-BLG-031

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Event Parameters

Internal ID:	gb9-R-9-127409
Discovery date:	2021-03-13T22:45:29
RA:	18:00:20.21
Dec:	-28:45:47.49
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
69704	18:00:20.23	-28:45:44.17	18.91 ± 0.34	4.18
69758	18:00:20.10	-28:45:50.03	16.34 ± 0.06	2.18
69773	18:00:20.05	-28:45:47.14	18.33 ± 0.18	1.73
69834	18:00:19.91	-28:45:44.57	17.48 ± 0.18	4.97

Last 5 photometry measurements

Observation date	I mag	seeing
2460246.884 (2023-Oct-29.384)	99.99 ± 99.99	3.60
2460246.896 (2023-Oct-29.396)	99.99 ± 99.99	3.34
2460246.906 (2023-Oct-29.406)	99.99 ± 99.99	3.63
2460246.918 (2023-Oct-29.418)	99.99 ± 99.99	3.65
2460246.927 (2023-Oct-29.427)	20.20 ± 1.55	3.62

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

Single lens fit parameters

t_max	=	JD 2459308.78	±	0.10 UT (2021-Apr-4.28)
t_E	=	191.89	±	6.53 days
u₀	=	0.1002	±	0.0045
I_base	=	19.70	±	0.32

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice