2025-11-25 / UCAC4 560-023814 / (5550) 1981 UB1
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show William Stewart
O+
VID
M279
GB
GPS
22:45:32
22:46:26.7
22:46:28.7
22:47:22
0.300
0.300
2.00
14.2
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 c757b3e0-ddb8-11f0-547e-21beaf7e6fef for map and profile fit
Map with groundtrack and observer stations
Reset Map to default
Event Details
Occultation UUID [and DB] : c757b3e0-ddb8-11f0-547e-21beaf7e6fef [observed]
Occultation Date + Time : 2025-11-25 at 22:39:47 UT +/- 0.01 min [1]
Object Designation : (5550) 1981 UB1
Orbit Class : MBA
Star Designation : GDR3 3423620243843923712
Star Coordinates (ICRF) : RA = 06 03 50.9344, DE = +21 51 02.209 [2]
Star Magnitudes : G = 14.71 mag, RP = 14.01 mag, BP = 15.25 mag
Object Magnitude : V = 16.08 mag
Estimated Magnitude Drop : 1.6 mag
Estimated Max. Duration : 1.6 sec
Object Mean Diameter : 11.6 km (src: astorb)
Speed of the shadow : 7.1 km/s
Elongation to Moon & Sun : 144° (sunlit = 27%), Sun = 153°
Cross-track uncertainty : 0.4 mas = 0 km = 0.04 path-width (1-sig)
RUWE and duplicate source : 1.12 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#72
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)
