2025-09-30 / TYC 4683-00237-1 / (91854) 1999 UA9
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Jiri Polak
O-
VID
M300
CZ
NTP
19:41:53
::
::
19:43:53
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 7a9b1470-ddb8-11f0-547e-92b7a7f7b23c for map and profile fit
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Event Details
Occultation UUID [and DB] : 7a9b1470-ddb8-11f0-547e-92b7a7f7b23c [observed]
Occultation Date + Time : 2025-09-30 at 19:39:11 UT +/- 0.01 min [1]
Object Designation : (91854) 1999 UA9
Orbit Class : MBA
Star Designation : GDR3 2476062218240795392
Star Coordinates (ICRF) : RA = 01 05 32.8342, DE = -06 59 49.278 [2]
Star Magnitudes : G = 11.32 mag, RP = 10.86 mag, BP = 11.62 mag
Object Magnitude : V = 18.87 mag
Estimated Magnitude Drop : 7.6 mag
Estimated Max. Duration : 0.3 sec
Object Mean Diameter : 3.5 km (src: astorb)
Speed of the shadow : 11.6 km/s
Elongation to Moon & Sun : 84° (sunlit = 58%), Sun = 166°
Cross-track uncertainty : 1.7 mas = 2 km = 0.63 path-width (1-sig)
RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#41
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)
