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

Stellar Occultation by (923) Herluga on 2025-12-30 (22:00:41 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] : 257bb770-d997-11f1-43f3-57cb9f5633b8 [observed]

 Occultation Date + Time   : 2025-12-30 at 22:00:41 UT +/- 0.08 min  [1]
 Object Designation        : (923) Herluga
 Star Designation          : GDR3 3263687481489571968
 Star Coordinates (ICRF)   : RA = 03 41 50.9853, DE = +00 16 58.428  [2]
 Star Magnitudes           : G = 15.29 mag, RP = 14.79 mag, BP = 15.61 mag
 Object Magnitude          : V = 14.93 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 17.4 sec
 Speed of the shadow       : 1.9 km/s
 Object Mean Diameter      : 32.5 km  (src: astorb) => apparent = 32 mas
 Apparent Motion           : 0.1117 arcs/min @ PA = 339 deg
 Horizontal Parallax       : 6.3250 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 24° (sunlit = 83%), Sun = 131°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL79
 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)