MOA 2017-BLG-491

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Event Parameters

Internal ID:	gb11-R-8-2571
Discovery date:	2017-09-29T17:20:45
RA:	18:06:21.20
Dec:	-32:54:17.88
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
151289	18:06:21.44	-32:54:15.48	15.96 ± 0.06	4.78
151387	18:06:21.18	-32:54:18.22	15.08 ± 0.08	0.39
151388	18:06:21.20	-32:54:21.13	17.47 ± 0.11	2.81

Last 5 photometry measurements

Observation date	I mag	seeing
2460517.008 (2024-Jul-25.508)	15.05 ± 0.01	3.07
2460517.084 (2024-Jul-25.584)	15.01 ± 0.04	4.23
2460518.069 (2024-Jul-26.569)	15.21 ± 0.08	5.32
2460518.821 (2024-Jul-27.321)	15.05 ± 0.01	2.47
2460518.902 (2024-Jul-27.402)	15.06 ± 0.01	3.21

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 84488.97)

Single lens fit parameters

t_max	=	JD 2458023.28	±	0.04 UT (2017-Sep-26.78)
t_E	=	22.62	±	2.31 days
u₀	=	0.1746	±	0.0326
I_base	=	18.27	±	0.15

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice