MOA 2022-BLG-457

Previous event Next event Return to alert index

Event Parameters

Internal ID:	gb7-R-8-7601
Discovery date:	2022-08-22T16:21:37
RA:	18:02:53.65
Dec:	-32:34:54.22
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
8837	18:02:53.94	-32:34:53.16	18.02 ± 0.19	4.73
8880	18:02:53.90	-32:34:57.10	17.80 ± 0.16	4.54
8990	18:02:53.65	-32:34:54.74	14.83 ± 0.12	0.60
9030	18:02:53.56	-32:34:50.41	17.61 ± 0.09	4.60
9142	18:02:53.34	-32:34:56.78	17.99 ± 0.18	4.06

Last 5 photometry measurements

Observation date	I mag	seeing
2460245.911 (2023-Oct-28.411)	14.81 ± 0.01	3.43
2460245.940 (2023-Oct-28.440)	14.77 ± 0.01	3.64
2460246.867 (2023-Oct-29.367)	14.79 ± 0.01	3.52
2460246.915 (2023-Oct-29.415)	14.78 ± 0.01	3.28
2460246.938 (2023-Oct-29.438)	14.81 ± 0.02	4.11

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 106365.31)

Single lens fit parameters

t_max	=	JD 2459815.47	±	0.09 UT (2022-Aug-23.97)
t_E	=	16.19	±	2.80 days
u₀	=	0.5092	±	0.1144
I_base	=	17.66	±	0.16

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice