MOA 2021-BLG-438

Event Parameters

Internal ID:gb20-R-5-10266
Discovery date:2021-10-15T15:02:38
RA:18:15:51.08
Dec:-24:20:55.94
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
99709 18:15:50.92 -24:20:58.90 18.44 ± 0.06 4.75
99745 18:15:51.02 -24:20:51.11 15.76 ± 0.04 4.71
99763 18:15:51.04 -24:20:55.30 16.40 ± 0.03 1.13
99917 18:15:51.35 -24:20:56.46 18.63 ± 0.08 3.42
99935 18:15:51.44 -24:20:54.27 18.16 ± 0.05 4.64

Last 5 photometry measurements

Observation dateI magseeing
2460239.942 (2023-Oct-22.442) 16.38 ± 0.03 3.75
2460244.877 (2023-Oct-27.377) 16.38 ± 0.04 4.65
2460245.871 (2023-Oct-28.371) 16.36 ± 0.03 3.67
2460246.850 (2023-Oct-29.350) 16.44 ± 0.03 3.74
2460246.871 (2023-Oct-29.371) 16.37 ± 0.02 3.69

Calibration: I = 27.40 - 2.5 log10(ΔF + 25142.01)

Single lens fit parameters

tmax =JD 2459502.81 ± 0.11 UT (2021-Oct-15.31)
tE =39.12 ± 4.94 days
u0 =0.0796 ± 0.0143
Ibase =19.70 ± 0.11

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice