2023-12-29 / UCAC4 522-026645 / (850) Altona
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Serge Dramonis
O+
VID
M400
GR
GPS
20:10:30
20:12:26.78
20:12:31.64
20:14:00
0.25
0.25
4.86
77.3
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 ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 for map and profile fit
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Event Details
Occultation UUID [and DB] : ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 [observed]
Occultation Date + Time : 2023-12-29 at 20:08:55 UT +/- 0.0 min [1]
Object Designation : (850) Altona
Orbit Class : MBA
Star Designation : GDR3 3356480142549292544
Star Coordinates (ICRF) : RA = 06 30 47.8535, DE = +14 20 22.049 [2]
Star Magnitudes : G = 14.61 mag, RP = 13.71 mag, BP = 15.42 mag
Object Magnitude : V = 14.48 mag
Estimated Magnitude Drop : 0.7 mag
Estimated Max. Duration : 5.1 sec
Object Mean Diameter : 80.9 km (src: astorb)
Speed of the shadow : 15.9 km/s
Elongation to Moon & Sun : 35° (sunlit = 92%), Sun = 171°
Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig)
RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#78
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)
