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
2460610.890 (2024-Oct-27.390)	14.98 ± 0.03	5.13
2460610.939 (2024-Oct-27.439)	15.17 ± 0.05	4.51
2460611.933 (2024-Oct-28.433)	15.20 ± 0.05	4.99
2460611.940 (2024-Oct-28.440)	14.99 ± 0.02	4.85
2460614.895 (2024-Oct-31.395)	15.26 ± 0.06	4.71

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