MOA 2017-BLG-457

Event Parameters

Internal ID:gb19-R-9-17415
Discovery date:2017-09-04T01:03:12
RA:18:20:34.22
Dec:-25:15:57.73
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
103878 18:20:34.46 -25:16:01.22 17.36 ± 0.11 4.99
103904 18:20:34.43 -25:15:56.62 18.35 ± 0.14 4.05
104016 18:20:34.21 -25:15:58.19 17.00 ± 0.04 0.52
104017 18:20:34.22 -25:16:01.07 17.50 ± 0.04 2.91
104131 18:20:33.99 -25:15:56.42 18.37 ± 0.07 3.33

Last 5 photometry measurements

Observation dateI magseeing
2460235.930 (2023-Oct-18.430) 16.89 ± 0.02 2.55
2460239.943 (2023-Oct-22.443) 17.00 ± 0.07 3.43
2460244.878 (2023-Oct-27.378) 17.03 ± 0.09 4.40
2460245.873 (2023-Oct-28.373) 16.92 ± 0.06 3.43
2460246.872 (2023-Oct-29.372) 16.90 ± 0.07 3.66

Calibration: I = 27.40 - 2.5 log10(ΔF + 14481.05)

Single lens fit parameters

tmax =JD 2458008.15 ± 0.10 UT (2017-Sep-11.65)
tE =1.60 ± 5.21 days
u0 =11.2238 ± 8.8974
Ibase =7.81 ± 0.17

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice