2025-08-21 / UCAC4 325-158715 / (1398) Donnera
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Deborah Smith
O-
VID
M300
ES
GPS
19:47:54
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::
19:51:54
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 4cd6bae0-ddb7-11f0-547e-e898979f2eb3 for map and profile fit
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Event Details
Occultation UUID [and DB] : 4cd6bae0-ddb7-11f0-547e-e898979f2eb3 [observed]
Occultation Date + Time : 2025-08-21 at 19:28:38 UT +/- 0.05 min [1]
Object Designation : (1398) Donnera
Orbit Class : MBA
Star Designation : GDR3 4053208294198061184
Star Coordinates (ICRF) : RA = 18 22 40.2327, DE = -25 04 44.346 [2]
Star Magnitudes : G = 14.07 mag, RP = 13.44 mag, BP = 14.53 mag
Object Magnitude : V = 15.38 mag
Estimated Magnitude Drop : 1.6 mag
Estimated Max. Duration : 8.0 sec
Object Mean Diameter : 34.5 km (src: astorb)
Speed of the shadow : 4.3 km/s
Elongation to Moon & Sun : 144° (sunlit = 2%), Sun = 126°
Cross-track uncertainty : 0.7 mas = 1 km = 0.03 path-width (1-sig)
RUWE and duplicate source : 0.85 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)
