CORA test instance — changes here do not update the production service.
Collaborative Occultation
Resources and Archive
Occultations | Call for Observation | Observations | Reports | Info + Credits | JOA | Login

Stellar Occultation by (6513) 1987 UW1 on 2025-09-20 (21:43:17 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] : 79068730-ddb7-11f0-547e-46d1fcfe8edd [observed] Occultation Date + Time : 2025-09-20 at 21:43:17 UT +/- 0.01 min [1] Object Designation : (6513) 1987 UW1 Star Designation : GDR3 2781307231890195712 Star Coordinates (ICRF) : RA = 00 42 55.7326, DE = +15 35 35.956 [2] Star Magnitudes : G = 12.99 mag, RP = 12.41 mag, BP = 13.4 mag Object Magnitude : V = 16.74 mag Estimated Magnitude Drop : 3.8 mag Estimated Max. Duration : 0.8 sec Speed of the shadow : 8.0 km/s Object Mean Diameter : 6.4 km (src: astorb) => apparent = 7 mas Apparent Motion : 0.4883 arcs/min @ PA = 238 deg Horizontal Parallax : 6.5080 arcs Dynamical Class : MBA Elongation to Moon & Sun : 150° (sunlit = 1%), Sun = 160° Cross-track uncertainty : 1.7 mas = 1 km = 0.26 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#58 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

Aladin Sky Atlas
Loading sky atlas…

Aladin Lite direct link (has Gaia overlay)