MOA 2021-BLG-172

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Event Parameters

Internal ID:	gb4-R-1-179830
Discovery date:	2021-06-09T19:07:20
RA:	17:52:15.44
Dec:	-30:27:06.16
Current assessment:	microlensing

A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starID	RA	Dec	mag	separation
24605	17:52:15.24	-30:27:02.38	18.01 ± 0.08	4.72
24677	17:52:15.44	-30:27:08.13	17.24 ± 0.08	2.73
24678	17:52:15.45	-30:27:04.84	18.33 ± 0.07	0.91
24693	17:52:15.51	-30:27:10.13	16.36 ± 0.05	4.81
24775	17:52:15.76	-30:27:07.15	18.46 ± 0.10	4.11

Last 5 photometry measurements

Observation date	I mag	seeing
2460572.944 (2024-Sep-19.444)	17.74 ± 0.19	4.21
2460572.954 (2024-Sep-19.454)	17.63 ± 0.18	3.95
2460572.966 (2024-Sep-19.466)	15.95 ± 0.44	5.59
2460574.031 (2024-Sep-20.531)	17.65 ± 0.27	5.04
2460575.919 (2024-Sep-22.419)	17.54 ± 0.41	4.83

Calibration: I = 27.40 - 2.5 log₁₀(ΔF + 4230.58)

Single lens fit parameters

t_max	=	JD 2459375.61	±	0.02 UT (2021-Jun-10.11)
t_E	=	13.04	±	0.84 days
u₀	=	0.1571	±	0.0145
I_base	=	18.45	±	0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice