MOA 2021-BLG-191

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Event Parameters

Internal ID:	gb8-R-10-67540
Discovery date:	2021-06-17T11:20:30
RA:	18:00:24.40
Dec:	-30:15:23.83
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
61576	18:00:24.49	-30:15:26.02	16.94 ± 0.05	2.42
61608	18:00:24.42	-30:15:21.28	15.13 ± 0.02	3.41
61677	18:00:24.25	-30:15:20.43	15.40 ± 0.02	4.45
61709	18:00:24.18	-30:15:23.99	17.97 ± 0.11	2.49

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.888 (2023-Oct-28.388)	19.29 ± 0.66	3.72
2460245.921 (2023-Oct-28.421)	19.37 ± 1.00	3.94
2460246.858 (2023-Oct-29.358)	20.05 ± 1.32	3.86
2460246.891 (2023-Oct-29.391)	20.79 ± 2.39	3.93
2460246.925 (2023-Oct-29.425)	99.99 ± 99.99	3.67

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

Single lens fit parameters

t_max	=	JD 2459386.02	±	0.18 UT (2021-Jun-20.52)
t_E	=	67.94	±	8.58 days
u₀	=	0.0350	±	0.0174
I_base	=	20.08	±	0.19

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice