MOA 2019-BLG-258

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Event Parameters

Internal ID:	gb4-R-3-74481
Discovery date:	2019-06-15T11:52:35
RA:	17:51:09.03
Dec:	-31:03:07.53
Current assessment:	microlensing

possible binary caustic crossing.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
4710	17:51:08.95	-31:03:08.71	18.64 ± 0.07	2.44
4763	17:51:09.12	-31:03:09.32	17.92 ± 0.04	2.54

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.944 (2024-Sep-19.444)	99.99 ± 99.99	3.97
2460572.954 (2024-Sep-19.454)	99.99 ± 99.99	3.60
2460572.966 (2024-Sep-19.466)	17.18 ± 1.48	5.82
2460574.031 (2024-Sep-20.531)	21.75 ± 7.63	4.97
2460575.919 (2024-Sep-22.419)	99.99 ± 99.99	4.49

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

Single lens fit parameters

t_max	=	JD 2458661.24	±	0.00 UT (2019-Jun-26.74)
t_E	=	6220.90	±	3556.55 days
u₀	=	0.0005	±	0.0006
I_base	=	25.16	±	0.15

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice