MOA 2022-BLG-491

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Event Parameters

Internal ID:	gb17-R-5-125224
Discovery date:	2022-09-09T19:33:38
RA:	18:10:56.27
Dec:	-28:07:15.39
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
124086	18:10:56.12	-28:07:11.92	18.92 ± 0.18	4.07
124205	18:10:56.31	-28:07:14.68	14.92 ± 0.06	0.17
124286	18:10:56.47	-28:07:13.41	16.71 ± 0.15	2.64
124370	18:10:56.62	-28:07:15.99	16.88 ± 0.23	4.31

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.899 (2023-Oct-28.399)	14.92 ± 0.01	3.22
2460245.931 (2023-Oct-28.431)	14.91 ± 0.02	3.44
2460246.862 (2023-Oct-29.362)	14.89 ± 0.02	3.68
2460246.903 (2023-Oct-29.403)	14.93 ± 0.02	3.40
2460246.931 (2023-Oct-29.431)	14.95 ± 0.04	3.83

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 97903.90)

Single lens fit parameters

t_max	=	JD 2459832.22	±	0.03 UT (2022-Sep-9.72)
t_E	=	1.11	±	2.25 days
u₀	=	5.0032	±	3.7311
I_base	=	9.86	±	0.17

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice