MOA 2021-BLG-197

Event Parameters

Internal ID:gb4-R-7-79369
Discovery date:2021-06-21T14:38:41
RA:17:55:09.61
Dec:-31:18:47.76
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
57599 17:55:09.56 -31:18:48.31 18.43 ± 0.13 0.06
57615 17:55:09.49 -31:18:52.91 16.24 ± 0.07 4.81
57697 17:55:09.37 -31:18:52.01 16.51 ± 0.14 4.55
57748 17:55:09.28 -31:18:48.92 18.56 ± 0.20 3.78

Last 5 photometry measurements

Observation dateI magseeing
2460611.899 (2024-Oct-28.399) 18.13 ± 0.29 4.44
2460611.911 (2024-Oct-28.411) 18.16 ± 0.31 4.64
2460611.921 (2024-Oct-28.421) 18.17 ± 0.48 5.05
2460611.930 (2024-Oct-28.430) 17.80 ± 0.20 4.39
2460614.875 (2024-Oct-31.375) 18.23 ± 0.47 4.97

Calibration: I = 27.40 - 2.5 log10(ΔF + 3865.45)

Single lens fit parameters

tmax =JD 2459387.12 ± 0.02 UT (2021-Jun-21.62)
tE =14270.37 ± 12349.63 days
u0 =0.0004 ± 0.0024
Ibase =26.69 ± 0.26

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice