MOA 2017-BLG-040

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Event Parameters

Internal ID:	gb17-R-1-38514
Discovery date:	2017-02-22T16:19:29
RA:	18:11:07.81
Dec:	-26:50:22.68
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
40284	18:11:07.73	-26:50:26.35	15.88 ± 0.03	4.75
40336	18:11:07.84	-26:50:22.03	14.69 ± 0.02	0.15
40357	18:11:07.90	-26:50:25.61	17.80 ± 0.09	3.75
40445	18:11:08.16	-26:50:20.71	17.66 ± 0.06	4.50

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.899 (2023-Oct-28.399)	14.70 ± 0.01	3.57
2460245.931 (2023-Oct-28.431)	14.70 ± 0.01	3.67
2460246.862 (2023-Oct-29.362)	14.71 ± 0.01	3.81
2460246.903 (2023-Oct-29.403)	14.69 ± 0.01	3.70
2460246.931 (2023-Oct-29.431)	14.72 ± 0.01	3.99

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 121450.69)

Single lens fit parameters

t_max	=	JD 2457796.31	±	0.79 UT (2017-Feb-11.81)
t_E	=	4.88	±	12.74 days
u₀	=	7.8306	±	6.0338
I_base	=	9.26	±	0.20

External data

Gzipped FITS finder chart

All photometry data

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