MOA 2019-BLG-257

Event Parameters

Internal ID:gb3-R-6-28512
Discovery date:2019-06-13T15:53:44
RA:17:54:32.46
Dec:-33:24:06.04
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
68721 17:54:32.78 -33:24:05.24 18.35 ± 0.07 4.99
68785 17:54:32.67 -33:24:07.35 16.23 ± 0.03 3.44
68814 17:54:32.54 -33:24:09.38 15.87 ± 0.04 3.37
68912 17:54:32.39 -33:24:04.53 16.53 ± 0.06 2.21
68975 17:54:32.27 -33:24:11.06 18.56 ± 0.14 5.00
69025 17:54:32.12 -33:24:04.87 16.16 ± 0.03 4.19

Last 5 photometry measurements

Observation dateI magseeing
2460246.899 (2023-Oct-29.399) 99.99 ± 99.99 2.98
2460246.910 (2023-Oct-29.410) 99.99 ± 99.99 3.22
2460246.922 (2023-Oct-29.422) 99.99 ± 99.99 3.66
2460246.930 (2023-Oct-29.430) 99.99 ± 99.99 3.51
2460246.933 (2023-Oct-29.433) 99.99 ± 99.99 3.69

Calibration: I = 27.40 - 2.5 log10(ΔF + 0.00)

Single lens fit parameters

tmax =JD 2458652.11 ± 0.01 UT (2019-Jun-17.61)
tE =49.65 ± 0.92 days
u0 =0.0330 ± 0.0007
Ibase =19.53 ± 0.18

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice