MOA 2023-BLG-139

Event Parameters

Internal ID:gb4-R-8-85515
Discovery date:2023-04-22T21:55:04
RA:17:56:34.59
Dec:-31:02:58.37
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
112432 17:56:34.81 -31:02:55.64 18.49 ± 0.17 4.93
112447 17:56:34.74 -31:02:57.25 18.19 ± 0.14 3.06
112448 17:56:34.78 -31:03:00.34 19.21 ± 0.47 3.42
112544 17:56:34.56 -31:02:58.95 17.15 ± 0.10 0.10
112611 17:56:34.45 -31:02:54.59 15.77 ± 0.05 4.74
112612 17:56:34.42 -31:02:56.82 17.82 ± 0.14 2.82

Last 5 photometry measurements

Observation dateI magseeing
2460611.899 (2024-Oct-28.399) 17.18 ± 0.10 4.51
2460611.911 (2024-Oct-28.411) 16.93 ± 0.10 4.51
2460611.921 (2024-Oct-28.421) 17.95 ± 0.49 5.19
2460611.930 (2024-Oct-28.430) 17.08 ± 0.13 4.54
2460614.875 (2024-Oct-31.375) 17.29 ± 0.20 5.02

Calibration: I = 27.40 - 2.5 log10(ΔF + 12635.72)

Single lens fit parameters

tmax =JD 2460064.02 ± 0.02 UT (2023-Apr-29.52)
tE =9.46 ± 0.22 days
u0 =0.5758 ± 0.0218
Ibase =16.56 ± 0.22

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice