MOA 2020-BLG-228

Event Parameters

Internal ID:gb5-R-3-123945
Discovery date:2020-08-16T17:22:31
RA:17:51:40.01
Dec:-29:06:29.02
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
95224 17:51:39.76 -29:06:25.59 19.70 ± 0.23 4.95
95284 17:51:39.96 -29:06:31.73 15.37 ± 0.03 3.62
95285 17:51:39.97 -29:06:24.23 17.73 ± 0.04 4.49
95315 17:51:40.06 -29:06:28.29 15.97 ± 0.02 0.20
95421 17:51:40.40 -29:06:28.38 18.39 ± 0.16 4.77

Last 5 photometry measurements

Observation dateI magseeing
2460611.907 (2024-Oct-28.407) 15.95 ± 0.05 4.96
2460611.918 (2024-Oct-28.418) 16.42 ± 0.15 5.59
2460614.862 (2024-Oct-31.362) 16.33 ± 0.16 5.78
2460614.868 (2024-Oct-31.368) 16.29 ± 0.13 5.49
2460614.872 (2024-Oct-31.372) 15.90 ± 0.06 4.80

Calibration: I = 27.40 - 2.5 log10(ΔF + 37256.32)

Single lens fit parameters

tmax =JD 2459078.90 ± 0.06 UT (2020-Aug-17.40)
tE =12415.81 ± 10464.89 days
u0 =0.0003 ± 0.0017
Ibase =27.20 ± 0.13

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice