MOA 2017-BLG-489

Event Parameters

Internal ID:gb4-R-3-66545
Discovery date:2017-09-29T11:02:41
RA:17:53:22.03
Dec:-30:52:18.69
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
139245 17:53:21.83 -30:52:20.82 16.35 ± 0.06 4.26
139269 17:53:21.86 -30:52:18.08 17.35 ± 0.15 2.78
139335 17:53:21.99 -30:52:22.32 18.65 ± 0.23 4.49
139358 17:53:22.04 -30:52:13.44 15.30 ± 0.07 4.83
139378 17:53:22.09 -30:52:16.62 17.28 ± 0.14 1.54
139489 17:53:22.33 -30:52:17.79 17.62 ± 0.09 3.49
139490 17:53:22.32 -30:52:15.11 17.84 ± 0.14 4.54

Last 5 photometry measurements

Observation dateI magseeing
2460611.899 (2024-Oct-28.399) 99.99 ± 99.99 4.56
2460611.911 (2024-Oct-28.411) 19.55 ± 0.99 4.74
2460611.921 (2024-Oct-28.421) 99.99 ± 99.99 5.07
2460611.930 (2024-Oct-28.430) 18.22 ± 0.24 4.49
2460614.875 (2024-Oct-31.375) 18.33 ± 0.38 5.06

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

Single lens fit parameters

tmax =JD 2458026.58 ± 0.00 UT (2017-Sep-30.08)
tE =14.52 ± 0.32 days
u0 =0.0180 ± 0.0008
Ibase =18.61 ± 0.26

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice