2025-12-25 / UCAC4 528-008060 / (4025) Ridley
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Ferran Casarramona
O-
VID
M200
ES
GPS
21:32:02
::
::
21:35:01
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More 1 observation found in db: sodis
Available (probably) matching predictions (click on the link to switch):
Using prediction 96367870-d996-11f1-43f3-5cf07fdfbbfe for map and profile fit
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Event Details
Occultation UUID [and DB] : 96367870-d996-11f1-43f3-5cf07fdfbbfe [observed]
Occultation Date + Time : 2025-12-25 at 21:29:30 UT +/- 0.01 min [1]
Object Designation : (4025) Ridley
Orbit Class : MBA
Star Designation : GDR3 0045204122769710336
Star Coordinates (ICRF) : RA = 04 10 30.0402, DE = +15 30 01.698 [2]
Star Magnitudes : G = 13.17 mag, RP = 12.44 mag, BP = 13.73 mag
Object Magnitude : V = 16.23 mag
Estimated Magnitude Drop : 3.1 mag
Estimated Max. Duration : 1.5 sec
Object Mean Diameter : 5.8 km (src: astorb)
Speed of the shadow : 4.0 km/s
Elongation to Moon & Sun : 83° (sunlit = 30%), Sun = 149°
Cross-track uncertainty : 0.8 mas = 0 km = 0.10 path-width (1-sig)
RUWE and duplicate source : 1.92 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL65
Note : FP:true
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
(If error 404: link not valid which means no data available)
