MOA 2017-BLG-189

Event Parameters

Internal ID:gb3-R-9-27466
Discovery date:2017-04-20T18:06:05
RA:17:54:47.24
Dec:-32:27:39.69
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
145266 17:54:47.41 -32:27:43.82 16.41 ± 0.05 4.62
145327 17:54:47.26 -32:27:41.83 17.83 ± 0.11 1.80
145373 17:54:47.19 -32:27:36.90 19.01 ± 0.19 3.50
145374 17:54:47.21 -32:27:40.22 18.32 ± 0.09 0.14
145444 17:54:47.05 -32:27:40.61 18.66 ± 0.20 1.95
145531 17:54:46.90 -32:27:43.12 17.07 ± 0.10 4.88

Last 5 photometry measurements

Observation dateI magseeing
2460611.900 (2024-Oct-28.400) 18.42 ± 0.25 4.40
2460611.912 (2024-Oct-28.412) 17.96 ± 0.26 5.20
2460611.923 (2024-Oct-28.423) 18.12 ± 0.31 5.21
2460611.931 (2024-Oct-28.431) 18.50 ± 0.24 4.42
2460614.876 (2024-Oct-31.376) 17.55 ± 0.16 5.11

Calibration: I = 27.40 - 2.5 log10(ΔF + 4289.43)

Single lens fit parameters

tmax =JD 2457865.96 ± 0.05 UT (2017-Apr-22.46)
tE =32.33 ± 1.61 days
u0 =0.1843 ± 0.0139
Ibase =19.73 ± 0.21

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice