MOA 2017-BLG-509

Event Parameters

Internal ID:gb1-R-7-13600
Discovery date:2017-10-28T22:17:40
RA:17:49:50.14
Dec:-34:33:10.77
Current assessment:cv
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
28801 17:49:50.37 -34:33:14.54 17.36 ± 0.10 4.79
28858 17:49:50.24 -34:33:08.92 17.70 ± 0.12 3.09
28880 17:49:50.18 -34:33:10.94 19.00 ± 0.17 1.12
28910 17:49:50.13 -34:33:15.46 19.64 ± 0.30 4.26
28972 17:49:50.07 -34:33:12.81 19.97 ± 0.34 1.54
29048 17:49:49.90 -34:33:08.70 15.02 ± 0.05 3.73
29080 17:49:49.86 -34:33:12.66 19.07 ± 0.19 3.30

Last 5 photometry measurements

Observation dateI magseeing
2460245.923 (2023-Oct-28.423) 19.27 ± 1.00 3.48
2460245.937 (2023-Oct-28.437) 18.00 ± 0.34 3.90
2460246.859 (2023-Oct-29.359) 18.94 ± 0.58 3.73
2460246.892 (2023-Oct-29.392) 18.44 ± 0.42 3.66
2460246.926 (2023-Oct-29.426) 18.01 ± 0.32 3.51

Calibration: I = 27.40 - 2.5 log10(ΔF + 2280.34)

Single lens fit parameters

tmax =JD 2458054.43 ± 0.07 UT (2017-Oct-27.93)
tE =0.69 ± 2.48 days
u0 =8.0419 ± 6.7055
Ibase =8.75 ± 0.17

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice