MOA 2017-BLG-440

Event Parameters

Internal ID:gb17-R-4-18674
Discovery date:2017-08-30T14:12:34
RA:18:10:13.41
Dec:-27:42:24.72
Current assessment:microlensing
A transient event found by MOA.

Lightcurve

Finder chart

Nearest catalogued stars

starIDRADecmagseparation
141544 18:10:13.20 -27:42:21.04 16.78 ± 0.11 4.74
141570 18:10:13.26 -27:42:26.65 17.69 ± 0.16 3.76
141689 18:10:13.47 -27:42:23.86 15.15 ± 0.05 0.33
141733 18:10:13.56 -27:42:28.50 15.27 ± 0.17 4.73
141837 18:10:13.73 -27:42:21.54 19.03 ± 0.24 4.70

Last 5 photometry measurements

Observation dateI magseeing
2460245.899 (2023-Oct-28.399) 15.16 ± 0.01 3.02
2460245.931 (2023-Oct-28.431) 15.12 ± 0.02 3.60
2460246.862 (2023-Oct-29.362) 15.15 ± 0.01 3.55
2460246.903 (2023-Oct-29.403) 15.15 ± 0.01 3.36
2460246.931 (2023-Oct-29.431) 15.17 ± 0.02 3.74

Calibration: I = 27.40 - 2.5 log10(ΔF + 79506.02)

Single lens fit parameters

tmax =JD 2458090.97 ± 6.00 UT (2017-Dec-3.47)
tE =50.07 ± 13.96 days
u0 =1.4196 ± 0.4962
Ibase =13.94 ± 0.28

External data

Gzipped FITS finder chart

All photometry data

Machine readable VOEvent notice