2026-08-15 / UCAC4 349-146773 / (850) Altona
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Deborah Smith
O+
VID
M300
ES
GPS
22:11:43
22:12:38.871
22:12:49.762
22:13:43
2.053
2.053
10.89
70.8
2
show Deborah Smith
O-
VID
M250
ES
GPS
22:11:42
::
::
22:13:42
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More 2 observations found in db: sodis
Available (probably) matching predictions (click on the link to switch):
Using prediction f1c49d40-d9ad-11f1-43f3-09d5dfff0872 for map and profile fit
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Event Details
Occultation UUID [and DB] : f1c49d40-d9ad-11f1-43f3-09d5dfff0872 [observed]
Occultation Date + Time : 2026-08-15 at 22:26:44 UT +/- 0.05 min [1]
Object Designation : (850) Altona
Orbit Class : MBA
Star Designation : GDR3 4091782293212159360
Star Coordinates (ICRF) : RA = 18 37 07.4380, DE = -20 22 42.717 [2]
Star Magnitudes : G = 15.64 mag, RP = 14.73 mag, BP = 16.47 mag
Object Magnitude : V = 14.0 mag
Estimated Magnitude Drop : 0.2 mag
Estimated Max. Duration : 12.5 sec
Object Mean Diameter : 80.9 km (src: astorb)
Speed of the shadow : 6.5 km/s
Elongation to Moon & Sun : 94° (sunlit = 13%), Sun = 136°
Cross-track uncertainty : 1.1 mas = 1 km = 0.02 path-width (1-sig)
RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL79
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)
