MOA 2017-BLG-254

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Event Parameters

Internal ID:	gb4-R-7-46881
Discovery date:	2017-05-13T12:26:34
RA:	17:56:47.10
Dec:	-31:18:36.93
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
10809	17:56:47.33	-31:18:39.26	17.97 ± 0.08	4.18
10891	17:56:47.19	-31:18:38.20	17.95 ± 0.06	1.99
10905	17:56:47.13	-31:18:34.06	18.20 ± 0.10	3.75
11053	17:56:46.80	-31:18:35.98	16.72 ± 0.06	3.75

Last 5 photometry measurements

Observation date	I mag	seeing
2460246.887 (2023-Oct-29.387)	99.99 ± 99.99	3.43
2460246.898 (2023-Oct-29.398)	99.99 ± 99.99	3.15
2460246.909 (2023-Oct-29.409)	18.30 ± 0.35	3.38
2460246.920 (2023-Oct-29.420)	18.21 ± 0.50	3.90
2460246.929 (2023-Oct-29.429)	17.92 ± 0.38	3.68

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

Single lens fit parameters

t_max	=	JD 2457886.87	±	0.01 UT (2017-May-13.37)
t_E	=	14.18	±	0.48 days
u₀	=	0.0350	±	0.0016
I_base	=	20.12	±	0.20

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice