2026-09-24 / UCAC4 399-087747 / (41341) 1999 YZ21
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Michael OConnell
O-
VID
M350
ES
NTP
20:48:46
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20:50:46
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 91b038c0-d9b1-11f1-43f3-46c2df9f9459 for map and profile fit
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Event Details
Occultation UUID [and DB] : 91b038c0-d9b1-11f1-43f3-46c2df9f9459 [observed]
Occultation Date + Time : 2026-09-24 at 21:05:40 UT +/- 0.02 min [1]
Object Designation : (41341) 1999 YZ21
Orbit Class : MBA
Star Designation : GDR3 4107199679626290432
Star Coordinates (ICRF) : RA = 18 45 16.7660, DE = -10 13 48.843 [2]
Star Magnitudes : G = 14.63 mag, RP = 13.53 mag, BP = 15.87 mag
Object Magnitude : V = 18.89 mag
Estimated Magnitude Drop : 4.3 mag
Estimated Max. Duration : 0.6 sec
Object Mean Diameter : 6.9 km (src: astorb)
Speed of the shadow : 12.3 km/s
Elongation to Moon & Sun : 59° (sunlit = 96%), Sun = 99°
Cross-track uncertainty : 1.7 mas = 3 km = 0.47 path-width (1-sig)
RUWE and duplicate source : 0.85 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL51
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)
