MOA 2017-BLG-221

Event Parameters

Internal ID:gb2-R-8-13346
Discovery date:2017-05-04T21:28:38
RA:17:54:08.93
Dec:-34:28:26.17
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
101476 17:54:09.11 -34:28:28.00 17.56 ± 0.25 3.24
101505 17:54:09.11 -34:28:25.10 16.13 ± 0.23 3.48
101668 17:54:08.77 -34:28:24.80 17.05 ± 0.12 2.45
101669 17:54:08.77 -34:28:28.66 17.65 ± 0.14 2.40
101768 17:54:08.59 -34:28:26.99 19.20 ± 0.17 3.68

Last 5 photometry measurements

Observation dateI magseeing
2460246.864 (2023-Oct-29.364) 99.99 ± 99.99 3.56
2460246.904 (2023-Oct-29.404) 99.99 ± 99.99 3.14
2460246.932 (2023-Oct-29.432) 19.99 ± 1.33 3.87
2460246.936 (2023-Oct-29.436) 20.15 ± 1.27 3.68
2460246.939 (2023-Oct-29.439) 99.99 ± 99.99 3.76

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

Single lens fit parameters

tmax =JD 2457878.82 ± 0.01 UT (2017-May-5.32)
tE =69.43 ± 15.31 days
u0 =0.0111 ± 0.0033
Ibase =22.27 ± 0.24

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice