MOA 2023-BLG-489

Event Parameters

Internal ID:gb20-R-3-7709
Discovery date:2023-10-28T11:14:22
RA:18:16:15.11
Dec:-23:38:22.14
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
125354 18:16:15.07 -23:38:21.79 16.84 ± 0.03 1.22
125433 18:16:15.26 -23:38:17.10 17.39 ± 0.07 4.82
125455 18:16:15.27 -23:38:25.20 16.52 ± 0.06 4.09
125544 18:16:15.45 -23:38:21.64 15.56 ± 0.02 4.24

Last 5 photometry measurements

Observation dateI magseeing
2460239.942 (2023-Oct-22.442) 16.41 ± 0.03 3.49
2460244.877 (2023-Oct-27.377) 14.98 ± 0.01 4.49
2460245.871 (2023-Oct-28.371) 15.67 ± 0.02 3.33
2460246.850 (2023-Oct-29.350) 16.04 ± 0.03 3.56
2460246.871 (2023-Oct-29.371) 16.00 ± 0.02 3.43

Calibration: I = 27.40 - 2.5 log10(ΔF + 16749.43)

Single lens fit parameters

tmax =JD 2460244.75 ± 0.06 UT (2023-Oct-27.25)
tE =52.08 ± 12.58 days
u0 =0.0097 ± 0.0033
Ibase =20.55 ± 0.13

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice