MOA 2023-BLG-490

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Event Parameters

Internal ID:	gb8-R-6-10994
Discovery date:	2023-10-28T11:14:27
RA:	18:03:00.31
Dec:	-31:35:24.07
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
3673	18:03:00.43	-31:35:28.61	16.80 ± 0.07	4.77
3715	18:03:00.34	-31:35:21.68	18.09 ± 0.07	3.29
3748	18:03:00.23	-31:35:24.69	16.51 ± 0.09	0.39
3804	18:03:00.12	-31:35:26.82	15.22 ± 0.11	2.94

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.888 (2023-Oct-28.388)	15.90 ± 0.03	3.57
2460245.921 (2023-Oct-28.421)	16.37 ± 0.06	3.34
2460246.858 (2023-Oct-29.358)	15.89 ± 0.03	3.70
2460246.891 (2023-Oct-29.391)	16.01 ± 0.04	3.64
2460246.925 (2023-Oct-29.425)	16.46 ± 0.06	3.39

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 22782.43)

Single lens fit parameters

t_max	=	JD 2460284.64	±	5.84 UT (2023-Dec-6.14)
t_E	=	18.46	±	38.91 days
u₀	=	5.0326	±	3.8699
I_base	=	10.69	±	0.15

External data

Gzipped FITS finder chart

All photometry data

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