MOA 2021-BLG-228

Event Parameters

Internal ID:gb16-R-3-21178
Discovery date:2021-07-07T16:42:32
RA:18:09:35.86
Dec:-29:05:01.88
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
117210 18:09:35.68 -29:05:01.60 19.28 ± 0.15 3.09
117319 18:09:35.89 -29:05:01.50 18.97 ± 0.14 0.29
117382 18:09:35.99 -29:05:04.80 18.62 ± 0.16 3.84
117383 18:09:36.07 -29:04:58.15 18.80 ± 0.18 3.96
117456 18:09:36.22 -29:05:02.47 18.81 ± 0.12 4.52
117494 18:09:36.26 -29:05:00.72 16.84 ± 0.09 4.93

Last 5 photometry measurements

Observation dateI magseeing
2460245.910 (2023-Oct-28.410) 18.37 ± 0.21 3.20
2460245.939 (2023-Oct-28.439) 18.34 ± 0.25 3.49
2460246.866 (2023-Oct-29.366) 18.49 ± 0.18 3.44
2460246.913 (2023-Oct-29.413) 18.48 ± 0.20 3.24
2460246.937 (2023-Oct-29.437) 18.57 ± 0.38 3.74

Calibration: I = 27.40 - 2.5 log10(ΔF + 2359.39)

Single lens fit parameters

tmax =JD 2459407.32 ± 0.00 UT (2021-Jul-11.82)
tE =21.81 ± 0.35 days
u0 =0.0032 ± 0.0001
Ibase =19.10 ± 0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice