MOA 2023-BLG-439

Event Parameters

Internal ID:gb9-R-8-90603
Discovery date:2023-09-25T15:43:50
RA:18:01:17.26
Dec:-29:19:40.16
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
135505 18:01:17.56 -29:19:42.07 17.37 ± 0.05 4.90
135538 18:01:17.43 -29:19:40.80 15.86 ± 0.07 2.91
135572 18:01:17.34 -29:19:42.76 17.27 ± 0.10 2.70
135615 18:01:17.24 -29:19:36.30 18.66 ± 0.18 4.61
135616 18:01:17.26 -29:19:44.72 18.20 ± 0.09 4.15
135650 18:01:17.15 -29:19:39.12 16.11 ± 0.05 1.87
135699 18:01:17.06 -29:19:42.23 18.07 ± 0.11 2.55

Last 5 photometry measurements

Observation dateI magseeing
2460246.884 (2023-Oct-29.384) 99.99 ± 99.99 3.45
2460246.896 (2023-Oct-29.396) 20.96 ± 2.06 3.19
2460246.906 (2023-Oct-29.406) 20.40 ± 1.41 3.45
2460246.918 (2023-Oct-29.418) 99.99 ± 99.99 3.56
2460246.927 (2023-Oct-29.427) 21.29 ± 3.76 3.51

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

Single lens fit parameters

tmax =JD 2460212.54 ± 0.04 UT (2023-Sep-25.04)
tE =9279.08 ± 8002.83 days
u0 =0.0002 ± 0.0011
Ibase =26.84 ± 0.21

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice