MOA 2021-BLG-409

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Event Parameters

Internal ID:	gb10-R-4-55620
Discovery date:	2021-09-30T13:42:59
RA:	17:57:08.16
Dec:	-27:43:54.37
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
96421	17:57:07.96	-27:43:55.59	19.21 ± 0.07	3.89
96472	17:57:08.21	-27:43:53.56	18.60 ± 0.06	0.24
96486	17:57:08.23	-27:43:50.84	19.33 ± 0.07	3.08
96523	17:57:08.38	-27:43:57.90	19.47 ± 0.16	4.85

Last 5 photometry measurements

Observation date	I mag	seeing
2460246.852 (2023-Oct-29.352)	18.61 ± 0.29	3.44
2460246.886 (2023-Oct-29.386)	19.44 ± 0.60	3.62
2460246.897 (2023-Oct-29.397)	18.42 ± 0.18	3.16
2460246.908 (2023-Oct-29.408)	18.92 ± 0.33	3.43
2460246.919 (2023-Oct-29.419)	18.52 ± 0.40	3.89

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 3299.13)

Single lens fit parameters

t_max	=	JD 2459495.95	±	0.02 UT (2021-Oct-8.45)
t_E	=	37.17	±	0.77 days
u₀	=	0.2020	±	0.0050
I_base	=	18.71	±	0.11

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice