MOA 2017-BLG-021

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Event Parameters

Internal ID:	gb4-R-6-43555
Discovery date:	2017-02-16T17:47:40
RA:	17:55:46.83
Dec:	-31:42:31.41
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
111500	17:55:46.92	-31:42:35.48	18.38 ± 0.07	4.13
111519	17:55:46.89	-31:42:30.61	17.41 ± 0.08	1.99
111520	17:55:46.89	-31:42:33.44	17.68 ± 0.08	2.11

Last 5 photometry measurements

Observation date	I mag	seeing
2460611.899 (2024-Oct-28.399)	99.99 ± 99.99	4.68
2460611.911 (2024-Oct-28.411)	99.99 ± 99.99	4.73
2460611.921 (2024-Oct-28.421)	99.99 ± 99.99	5.13
2460611.930 (2024-Oct-28.430)	99.99 ± 99.99	4.55
2460614.875 (2024-Oct-31.375)	99.99 ± 99.99	5.10

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

Single lens fit parameters

t_max	=	JD 2457794.92	±	0.19 UT (2017-Feb-10.42)
t_E	=	27.87	±	0.73 days
u₀	=	0.1592	±	0.0098
I_base	=	17.86	±	0.20

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice