MOA 2021-BLG-307

Event Parameters

Internal ID:gb18-R-3-25095
Discovery date:2021-08-03T12:20:31
RA:18:09:04.82
Dec:-25:39:04.17
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
97757 18:09:04.84 -25:39:03.49 18.23 ± 0.07 0.29
97773 18:09:04.90 -25:38:59.80 18.77 ± 0.10 3.97
97804 18:09:05.06 -25:38:59.86 18.12 ± 0.10 4.81
97839 18:09:05.06 -25:39:07.53 17.94 ± 0.06 4.99
97856 18:09:05.12 -25:39:02.44 17.15 ± 0.11 3.85

Last 5 photometry measurements

Observation dateI magseeing
2460244.901 (2023-Oct-27.401) 18.27 ± 0.25 3.70
2460245.862 (2023-Oct-28.362) 17.76 ± 0.18 3.60
2460245.898 (2023-Oct-28.398) 18.21 ± 0.21 3.38
2460246.861 (2023-Oct-29.361) 18.42 ± 0.27 3.56
2460246.902 (2023-Oct-29.402) 18.35 ± 0.22 3.31

Calibration: I = 27.40 - 2.5 log10(ΔF + 4660.15)

Single lens fit parameters

tmax =JD 2459442.76 ± 0.02 UT (2021-Aug-16.26)
tE =31.72 ± 0.62 days
u0 =0.1212 ± 0.0034
Ibase =18.39 ± 0.17

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice