MOA 2019-BLG-231

Event Parameters

Internal ID:gb4-R-3-73145
Discovery date:2019-05-24T07:02:44
RA:17:51:42.94
Dec:-31:08:51.44
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
17752 17:51:42.67 -31:08:53.13 19.03 ± 0.11 4.83
17814 17:51:42.82 -31:08:49.32 18.33 ± 0.09 2.75
17886 17:51:42.99 -31:08:50.66 17.20 ± 0.07 0.20
17907 17:51:43.05 -31:08:55.01 19.39 ± 0.25 4.38
17908 17:51:43.06 -31:08:48.16 16.02 ± 0.06 2.92
18024 17:51:43.29 -31:08:52.55 18.55 ± 0.11 4.45
18025 17:51:43.29 -31:08:48.86 17.02 ± 0.09 4.54

Last 5 photometry measurements

Observation dateI magseeing
2460568.003 (2024-Sep-14.503) 17.26 ± 0.09 3.84
2460568.014 (2024-Sep-14.514) 17.10 ± 0.11 3.80
2460568.025 (2024-Sep-14.525) 17.26 ± 0.13 3.59
2460568.036 (2024-Sep-14.536) 17.03 ± 0.26 3.72
2460568.046 (2024-Sep-14.546) 17.19 ± 0.27 3.54

Calibration: I = 27.40 - 2.5 log10(ΔF + 12055.91)

Single lens fit parameters

tmax =JD 2458639.13 ± 0.00 UT (2019-Jun-4.63)
tE =10.25 ± 0.02 days
u0 =0.0138 ± 0.0000
Ibase =16.48 ± 0.24

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice