MOA 2021-BLG-197

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Event Parameters

Internal ID:	gb4-R-7-79369
Discovery date:	2021-06-21T14:38:41
RA:	17:55:09.61
Dec:	-31:18:47.76
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
57599	17:55:09.56	-31:18:48.31	18.43 ± 0.13	0.06
57615	17:55:09.49	-31:18:52.91	16.24 ± 0.07	4.81
57697	17:55:09.37	-31:18:52.01	16.51 ± 0.14	4.55
57748	17:55:09.28	-31:18:48.92	18.56 ± 0.20	3.78

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.932 (2024-Sep-19.432)	17.94 ± 0.18	3.86
2460572.944 (2024-Sep-19.444)	17.98 ± 0.15	3.81
2460572.954 (2024-Sep-19.454)	17.98 ± 0.15	3.60
2460574.031 (2024-Sep-20.531)	17.70 ± 0.27	4.80
2460575.919 (2024-Sep-22.419)	17.72 ± 0.34	4.51

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 3865.45)

Single lens fit parameters

t_max	=	JD 2459387.12	±	0.02 UT (2021-Jun-21.62)
t_E	=	14270.37	±	12349.63 days
u₀	=	0.0004	±	0.0024
I_base	=	26.69	±	0.26

External data

Gzipped FITS finder chart

All photometry data

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