MOA 2021-BLG-277

Event Parameters

Internal ID:gb18-R-4-31234
Discovery date:2021-07-24T13:27:25
RA:18:09:19.76
Dec:-26:08:10.93
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
8217 18:09:19.61 -26:08:11.62 16.95 ± 0.04 3.07
8296 18:09:19.76 -26:08:06.04 17.39 ± 0.06 4.54
8314 18:09:19.82 -26:08:13.68 17.80 ± 0.08 3.48
8440 18:09:20.08 -26:08:13.09 15.94 ± 0.03 4.78

Last 5 photometry measurements

Observation dateI magseeing
2460244.901 (2023-Oct-27.401) 20.39 ± 1.19 3.46
2460245.862 (2023-Oct-28.362) 99.99 ± 99.99 3.73
2460245.898 (2023-Oct-28.398) 99.99 ± 99.99 3.55
2460246.861 (2023-Oct-29.361) 99.99 ± 99.99 3.75
2460246.902 (2023-Oct-29.402) 19.23 ± 0.44 3.42

Calibration: I = 27.40 - 2.5 log10(ΔF + 0.00)

Single lens fit parameters

tmax =JD 2459418.04 ± 0.07 UT (2021-Jul-22.54)
tE =25.50 ± 4.63 days
u0 =0.0163 ± 0.0100
Ibase =21.25 ± 0.17

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice