MOA 2023-BLG-309

Event Parameters

Internal ID:gb4-R-9-103780
Discovery date:2023-07-10T15:45:59
RA:17:56:46.22
Dec:-30:41:27.36
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
67581 17:56:46.25 -30:41:29.05 18.42 ± 0.15 1.49
67622 17:56:46.17 -30:41:27.68 16.46 ± 0.03 0.29
67683 17:56:46.06 -30:41:25.44 14.96 ± 0.01 3.05
67702 17:56:45.99 -30:41:30.45 17.28 ± 0.05 3.65

Last 5 photometry measurements

Observation dateI magseeing
2460611.899 (2024-Oct-28.399) 16.52 ± 0.06 4.72
2460611.911 (2024-Oct-28.411) 16.51 ± 0.06 4.88
2460611.921 (2024-Oct-28.421) 16.49 ± 0.09 5.23
2460611.930 (2024-Oct-28.430) 16.49 ± 0.06 4.72
2460614.875 (2024-Oct-31.375) 16.52 ± 0.07 5.14

Calibration: I = 27.40 - 2.5 log10(ΔF + 23659.20)

Single lens fit parameters

tmax =JD 2460148.67 ± 0.02 UT (2023-Jul-23.17)
tE =1.35 ± 0.01 days
u0 =8.7784 ± 0.0353
Ibase =7.60 ± 0.19

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice