MOA 2021-BLG-440

Event Parameters

Internal ID:gb7-R-3-10984
Discovery date:2021-10-15T20:07:31
RA:17:57:10.66
Dec:-32:42:25.56
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
109231 17:57:10.41 -32:42:26.38 18.29 ± 0.16 4.23
109387 17:57:10.86 -32:42:29.08 17.96 ± 0.15 4.71
109388 17:57:10.77 -32:42:25.37 14.14 ± 0.04 0.89
109413 17:57:10.83 -32:42:21.81 17.41 ± 0.07 3.66
109479 17:57:10.97 -32:42:25.79 16.76 ± 0.06 3.63

Last 5 photometry measurements

Observation dateI magseeing
2460245.911 (2023-Oct-28.411) 14.07 ± 0.01 3.22
2460245.940 (2023-Oct-28.440) 14.03 ± 0.01 3.39
2460246.867 (2023-Oct-29.367) 14.08 ± 0.01 3.40
2460246.915 (2023-Oct-29.415) 14.08 ± 0.01 3.19
2460246.938 (2023-Oct-29.438) 14.09 ± 0.01 3.87

Calibration: I = 27.40 - 2.5 log10(ΔF + 200816.78)

Single lens fit parameters

tmax =JD 2459519.62 ± 0.90 UT (2021-Nov-1.12)
tE =3.91 ± 0.17 days
u0 =8.7723 ± 0.2714
Ibase =7.91 ± 0.19

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice