MOA 2017-BLG-331

Event Parameters

Internal ID:gb18-R-7-9264
Discovery date:2017-06-20T12:26:02
RA:18:13:04.29
Dec:-26:00:20.31
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
66926 18:13:04.61 -26:00:20.55 20.60 ± 0.33 4.98
67039 18:13:04.42 -26:00:23.00 18.36 ± 0.11 3.23
67110 18:13:04.28 -26:00:18.45 19.22 ± 0.14 2.57
67111 18:13:04.29 -26:00:20.70 18.52 ± 0.12 0.55
67244 18:13:04.09 -26:00:20.76 20.07 ± 0.26 2.19
67266 18:13:04.03 -26:00:17.37 18.42 ± 0.17 4.77

Last 5 photometry measurements

Observation dateI magseeing
2460244.901 (2023-Oct-27.401) 18.60 ± 0.23 3.36
2460245.862 (2023-Oct-28.362) 18.60 ± 0.30 3.54
2460245.898 (2023-Oct-28.398) 18.48 ± 0.24 3.12
2460246.861 (2023-Oct-29.361) 18.40 ± 0.23 3.77
2460246.902 (2023-Oct-29.402) 18.71 ± 0.31 3.22

Calibration: I = 27.40 - 2.5 log10(ΔF + 3561.23)

Single lens fit parameters

tmax =JD 2457933.22 ± 0.00 UT (2017-Jun-28.72)
tE =32.05 ± 0.35 days
u0 =0.0138 ± 0.0002
Ibase =19.74 ± 0.16

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice