MOA 2017-BLG-399

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Event Parameters

Internal ID:	gb20-R-2-8748
Discovery date:	2017-07-24T11:49:43
RA:	18:15:51.34
Dec:	-23:16:29.50
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
100351	18:15:51.05	-23:16:30.01	16.90 ± 0.03	4.83
100438	18:15:51.28	-23:16:26.45	17.96 ± 0.05	2.93
100473	18:15:51.36	-23:16:28.09	17.63 ± 0.02	0.91
100515	18:15:51.46	-23:16:29.57	18.60 ± 0.06	1.31

Last 5 photometry measurements

Observation date	I mag	seeing
2460239.942 (2023-Oct-22.442)	17.62 ± 0.07	3.73
2460244.877 (2023-Oct-27.377)	17.61 ± 0.06	4.55
2460245.871 (2023-Oct-28.371)	17.77 ± 0.06	3.60
2460246.850 (2023-Oct-29.350)	17.50 ± 0.08	3.73
2460246.871 (2023-Oct-29.371)	17.63 ± 0.05	3.64

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 8120.82)

Single lens fit parameters

t_max	=	JD 2457962.87	±	0.00 UT (2017-Jul-28.37)
t_E	=	37.81	±	1.01 days
u₀	=	0.0022	±	0.0001
I_base	=	18.56	±	0.11

External data

Gzipped FITS finder chart

All photometry data

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