MOA 2017-BLG-421

Event Parameters

Internal ID:gb1-R-7-13233
Discovery date:2017-08-15T11:09:13
RA:17:50:26.15
Dec:-34:26:22.71
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
10276 17:50:26.29 -34:26:27.38 15.88 ± 0.03 4.91
10326 17:50:26.17 -34:26:19.70 19.96 ± 0.31 3.83
10375 17:50:26.13 -34:26:22.95 17.71 ± 0.15 0.45
10395 17:50:26.12 -34:26:26.98 18.66 ± 0.13 3.83
10416 17:50:26.04 -34:26:20.27 18.44 ± 0.09 3.26
10458 17:50:25.94 -34:26:24.31 18.73 ± 0.07 2.40
10526 17:50:25.80 -34:26:21.98 18.34 ± 0.09 4.21
10570 17:50:25.72 -34:26:23.14 19.04 ± 0.16 4.98

Last 5 photometry measurements

Observation dateI magseeing
2460245.923 (2023-Oct-28.423) 18.90 ± 0.96 3.39
2460245.937 (2023-Oct-28.437) 18.25 ± 0.72 3.87
2460246.859 (2023-Oct-29.359) 19.64 ± 1.20 3.76
2460246.892 (2023-Oct-29.392) 19.65 ± 1.57 3.75
2460246.926 (2023-Oct-29.426) 17.03 ± 0.17 3.65

Calibration: I = 27.40 - 2.5 log10(ΔF + 7543.97)

Single lens fit parameters

tmax =JD 2457979.70 ± 0.02 UT (2017-Aug-14.20)
tE =19.90 ± 0.43 days
u0 =0.1685 ± 0.0055
Ibase =18.09 ± 0.20

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice