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
2460518.892 (2024-Jul-27.392) 18.30 ± 0.14 2.74
2460518.897 (2024-Jul-27.397) 18.08 ± 0.13 2.80
2460518.910 (2024-Jul-27.410) 18.35 ± 0.22 3.32
2460518.922 (2024-Jul-27.422) 18.17 ± 0.28 3.30
2460519.052 (2024-Jul-27.552) 18.41 ± 0.51 3.36

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