Collaborative Occultation
Resources and Archive
CORA
Occultations | Observations | Reports | Info + Credits | JOA | Admin | Login

Stellar Occultation by (3685) Derdenye on 2026-09-09 (18:46:27 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : cd9eda00-d9af-11f1-43f3-0a42bffe2548 [observed]

 Occultation Date + Time   : 2026-09-09 at 18:46:27 UT +/- 0.02 min  [1]
 Object Designation        : (3685) Derdenye
 Star Designation          : GDR3 4237105947568180992
 Star Coordinates (ICRF)   : RA = 19 56 34.0459, DE = +00 05 43.281  [2]
 Star Magnitudes           : G = 13.95 mag, RP = 13.25 mag, BP = 14.5 mag
 Object Magnitude          : V = 17.48 mag
 Estimated Magnitude Drop  : 3.6 mag
 Estimated Max. Duration   : 1.3 sec
 Speed of the shadow       : 7.7 km/s
 Object Mean Diameter      : 10.2 km  (src: astorb) => apparent = 9 mas
 Apparent Motion           : 0.3917 arcs/min @ PA = 187 deg
 Horizontal Parallax       : 5.3790 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 146° (sunlit = 2%), Sun = 131°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.31 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL61
 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)


Interactive map

Download KMZ file

Aladin Sky Atlas
Loading sky atlas…
Aladin Lite direct link (has Gaia overlay)