2025-09-25 / UCAC4 635-004412 / (21254) Jonan
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Oscar Canales
O+
CCD
M280
ES
GPS
23:29:38
23:30:23.07
23:30:23.58
23:31:08
0.050
0.030
0.51
6.1
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 761d7b90-ddb8-11f0-547e-dc499ffdc9cd for map and profile fit
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Event Details
Occultation UUID [and DB] : 761d7b90-ddb8-11f0-547e-dc499ffdc9cd [observed]
Occultation Date + Time : 2025-09-25 at 23:27:31 UT +/- 0.0 min [1]
Object Designation : (21254) Jonan
Orbit Class : MBA
Star Designation : GDR3 0321609320083977472
Star Coordinates (ICRF) : RA = 01 20 31.4880, DE = +36 52 46.743 [2]
Star Magnitudes : G = 12.69 mag, RP = 12.01 mag, BP = 13.23 mag
Object Magnitude : V = 17.55 mag
Estimated Magnitude Drop : 4.9 mag
Estimated Max. Duration : 0.6 sec
Object Mean Diameter : 7.1 km (src: astorb)
Speed of the shadow : 11.9 km/s
Elongation to Moon & Sun : 154° (sunlit = 15%), Sun = 141°
Cross-track uncertainty : 1.0 mas = 1 km = 0.18 path-width (1-sig)
RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#63
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)
