Collaborative Occultation
Resources and Archive
CORA

Occultations | Observations | Reports | Info + Credits | JOA | Admin | Login

2025-04-05 / UCAC4 531-044774 / (33286) 1998 KA

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Olivier Schreurs, Patrick Dumoulin O+ VID M406 BE GPS 22:55:22 22:56:21.72 22:56:22.80 22:57:21 0.04 0.04 1.08 9.9
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):
JPL#48 : 75a2df40-ddb6-11f0-547e-c37a4f365402 [db: observed]

Using prediction 75a2df40-ddb6-11f0-547e-c37a4f365402 for map and profile fit

Get observations as KML file (reduced site location resolution)


Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 75a2df40-ddb6-11f0-547e-c37a4f365402 [observed]

 Occultation Date + Time   : 2025-04-05 at 22:50:12 UT +/- 0.01 min  [1]
 Object Designation        : (33286) 1998 KA
 Orbit Class               : MBA
 Star Designation          : GDR3 0655160775259545216
 Star Coordinates (ICRF)   : RA = 08 03 30.4542, DE = +16 05 48.172  [2]
 Star Magnitudes           : G = 12.74 mag, RP = 12.0 mag, BP = 13.33 mag
 Object Magnitude          : V = 19.27 mag
 Estimated Magnitude Drop  : 6.5 mag
 Estimated Max. Duration   : 0.6 sec
 Object Mean Diameter      : 5.6 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 9° (sunlit = 59%), Sun = 103°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.23 path-width (1-sig)
 RUWE and duplicate source : 0.88 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#48
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
(If error 404: link not valid which means no data available)

Aladin Sky Atlas
Aladin Lite direct link (has Gaia overlay)