MOA 2020-BLG-227

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Event Parameters

Internal ID:	gb8-R-4-21654
Discovery date:	2020-08-16T16:46:04
RA:	17:59:02.51
Dec:	-31:21:29.40
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
54214	17:59:02.21	-31:21:27.47	15.40 ± 0.21	4.67
54426	17:59:02.58	-31:21:27.40	17.91 ± 0.11	1.53
54427	17:59:02.61	-31:21:25.41	19.34 ± 0.24	3.64
54449	17:59:02.64	-31:21:31.87	18.88 ± 0.13	3.37

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.888 (2023-Oct-28.388)	20.57 ± 1.37	3.36
2460245.921 (2023-Oct-28.421)	19.65 ± 0.59	3.55
2460246.858 (2023-Oct-29.358)	99.99 ± 99.99	3.55
2460246.891 (2023-Oct-29.391)	99.99 ± 99.99	3.48
2460246.925 (2023-Oct-29.425)	99.99 ± 99.99	3.38

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

Single lens fit parameters

t_max	=	JD 2459078.19	±	0.00 UT (2020-Aug-16.69)
t_E	=	17.33	±	2.05 days
u₀	=	0.0037	±	0.0005
I_base	=	21.11	±	0.23

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice