MOA 2017-BLG-502

Event Parameters

Internal ID:gb18-R-4-24017
Discovery date:2017-10-18T13:02:13
RA:18:11:13.86
Dec:-25:57:33.90
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
171381 18:11:13.63 -25:57:31.63 19.84 ± 0.23 4.13
171460 18:11:13.78 -25:57:34.43 18.36 ± 0.13 2.08
171461 18:11:13.77 -25:57:31.28 19.04 ± 0.18 2.79
171531 18:11:13.89 -25:57:33.36 17.82 ± 0.11 0.19
171581 18:11:13.98 -25:57:36.41 19.15 ± 0.23 3.39
171624 18:11:14.08 -25:57:33.07 18.27 ± 0.10 2.49

Last 5 photometry measurements

Observation dateI magseeing
2460610.878 (2024-Oct-27.378) 18.10 ± 0.30 5.31
2460610.915 (2024-Oct-27.415) 17.93 ± 0.21 5.04
2460611.890 (2024-Oct-28.390) 17.94 ± 0.13 4.33
2460611.925 (2024-Oct-28.425) 17.36 ± 0.25 5.62
2460614.883 (2024-Oct-31.383) 17.64 ± 0.25 5.22

Calibration: I = 27.40 - 2.5 log10(ΔF + 6773.30)

Single lens fit parameters

tmax =JD 2458046.58 ± 0.10 UT (2017-Oct-20.08)
tE =13.77 ± 1.20 days
u0 =0.6913 ± 0.0918
Ibase =16.82 ± 0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice