MOA 2023-BLG-421

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Event Parameters

Internal ID:	gb17-R-4-38308
Discovery date:	2023-09-07T19:09:20
RA:	18:10:54.49
Dec:	-27:46:36.06
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
165394	18:10:54.38	-27:46:35.97	16.08 ± 0.05	2.18
165414	18:10:54.46	-27:46:33.18	18.11 ± 0.12	2.57
165463	18:10:54.54	-27:46:31.28	16.78 ± 0.09	4.34
165490	18:10:54.57	-27:46:35.23	15.41 ± 0.07	0.56

Last 5 photometry measurements

Observation date	I mag	seeing
2460610.879 (2024-Oct-27.379)	15.35 ± 0.04	5.20
2460610.916 (2024-Oct-27.416)	15.38 ± 0.03	4.96
2460611.891 (2024-Oct-28.391)	15.43 ± 0.04	4.35
2460611.926 (2024-Oct-28.426)	15.28 ± 0.05	5.48
2460614.884 (2024-Oct-31.384)	16.47 ± 0.39	5.83

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 62459.72)

Single lens fit parameters

t_max	=	JD 2460225.09	±	0.05 UT (2023-Oct-7.59)
t_E	=	31.96	±	0.52 days
u₀	=	0.3537	±	0.0101
I_base	=	16.62	±	0.22

External data

Gzipped FITS finder chart

All photometry data

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