MOA 2022-BLG-489

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Event Parameters

Internal ID:	gb6-R-6-41669
Discovery date:	2022-09-09T19:22:14
RA:	17:56:44.66
Dec:	-28:11:56.20
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
105091	17:56:44.89	-28:11:57.05	18.95 ± 0.12	3.78
105113	17:56:44.85	-28:11:53.91	16.84 ± 0.04	4.32
105197	17:56:44.65	-28:11:55.09	16.37 ± 0.05	1.85
105260	17:56:44.52	-28:11:52.46	16.61 ± 0.08	4.85
105342	17:56:44.39	-28:11:55.24	18.59 ± 0.10	3.67

Last 5 photometry measurements

Observation date	I mag	seeing
2460235.907 (2023-Oct-18.407)	19.32 ± 0.47	4.08
2460239.931 (2023-Oct-22.431)	20.02 ± 1.21	3.75
2460244.880 (2023-Oct-27.380)	17.80 ± 0.21	4.64
2460245.875 (2023-Oct-28.375)	19.80 ± 0.85	3.38
2460246.874 (2023-Oct-29.374)	19.50 ± 0.66	3.56

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

Single lens fit parameters

t_max	=	JD 2459831.03	±	0.03 UT (2022-Sep-8.53)
t_E	=	6742.74	±	6447.57 days
u₀	=	0.0001	±	0.0023
I_base	=	26.19	±	0.26

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice