MOA 2021-BLG-253

Event Parameters

Internal ID:gb8-R-4-21930
Discovery date:2021-07-11T17:45:52
RA:17:59:28.36
Dec:-31:28:22.29
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
66883 17:59:28.05 -31:28:23.27 18.85 ± 0.16 4.89
66903 17:59:28.10 -31:28:19.43 18.86 ± 0.18 4.71
66958 17:59:28.19 -31:28:25.67 17.52 ± 0.10 4.98
67072 17:59:28.40 -31:28:19.72 17.38 ± 0.09 2.06
67073 17:59:28.43 -31:28:17.33 18.58 ± 0.08 4.56
67110 17:59:28.49 -31:28:24.94 19.17 ± 0.15 3.55
67136 17:59:28.56 -31:28:20.62 17.91 ± 0.15 2.36

Last 5 photometry measurements

Observation dateI magseeing
2460245.888 (2023-Oct-28.388) 99.99 ± 99.99 3.34
2460245.921 (2023-Oct-28.421) 20.36 ± 1.23 3.42
2460246.858 (2023-Oct-29.358) 19.64 ± 0.52 3.50
2460246.891 (2023-Oct-29.391) 99.99 ± 99.99 3.53
2460246.925 (2023-Oct-29.425) 99.99 ± 99.99 3.32

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

Single lens fit parameters

tmax =JD 2459422.95 ± 0.03 UT (2021-Jul-27.45)
tE =62.06 ± 2.20 days
u0 =0.0952 ± 0.0042
Ibase =19.36 ± 0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice