MOA 2021-BLG-440

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Event Parameters

Internal ID:	gb7-R-3-10984
Discovery date:	2021-10-15T20:07:31
RA:	17:57:10.66
Dec:	-32:42:25.56
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
109231	17:57:10.41	-32:42:26.38	18.29 ± 0.16	4.23
109387	17:57:10.86	-32:42:29.08	17.96 ± 0.15	4.71
109388	17:57:10.77	-32:42:25.37	14.14 ± 0.04	0.89
109413	17:57:10.83	-32:42:21.81	17.41 ± 0.07	3.66
109479	17:57:10.97	-32:42:25.79	16.76 ± 0.06	3.63

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.923 (2024-Sep-19.423)	14.06 ± 0.01	3.67
2460572.960 (2024-Sep-19.460)	14.11 ± 0.01	4.75
2460573.018 (2024-Sep-19.518)	14.11 ± 0.01	4.56
2460574.029 (2024-Sep-20.529)	14.10 ± 0.01	4.57
2460574.041 (2024-Sep-20.541)	14.07 ± 0.01	4.81

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 200816.78)

Single lens fit parameters

t_max	=	JD 2459519.62	±	0.90 UT (2021-Nov-1.12)
t_E	=	3.91	±	0.17 days
u₀	=	8.7723	±	0.2714
I_base	=	7.91	±	0.19

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice