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
2460610.938 (2024-Oct-27.438) 21.61 ± 8.27 4.69
2460611.892 (2024-Oct-28.392) 99.99 ± 99.99 4.28
2460611.927 (2024-Oct-28.427) 99.99 ± 99.99 5.39
2460611.935 (2024-Oct-28.435) 99.99 ± 99.99 4.95
2460614.886 (2024-Oct-31.386) 19.08 ± 1.65 5.05

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