Collaborative Occultation
Resources and Archive
CORA

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

2025-10-03 / UCAC4 468-003944 / (351) Yrsa

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Deborah Smith O+ VID M300 ES GPS 03:15:29 03:17:30.690 03:17:35.255 03:19:29 0.022 0.022 4.56 35.6
2 show Deborah Smith O- VID M200 ES GPS 03:15:34 :: :: 03:19:34
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#80 : 7fb42a00-ddb8-11f0-547e-20d27f4f6524 [db: observed]

Using prediction 7fb42a00-ddb8-11f0-547e-20d27f4f6524 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-10-03, 03:16 UT (JD = 2460951.636)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 484None13.312 193°, -41° 2.450699e610252.60.0° NoneNone not scaled 2013-02-11
# 485None13.312 20°, -70° 2.450699e610252.60.0° NoneNone not scaled 2013-02-11
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

   
Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 7fb42a00-ddb8-11f0-547e-20d27f4f6524 [observed]

 Occultation Date + Time   : 2025-10-03 at 03:23:42 UT +/- 0.02 min  [1]
 Object Designation        : (351) Yrsa
 Orbit Class               : MBA
 Star Designation          : GDR3 0001686723852064128
 Star Coordinates (ICRF)   : RA = 02 54 21.4872, DE = +03 27 08.954  [2]
 Star Magnitudes           : G = 13.18 mag, RP = 12.57 mag, BP = 13.63 mag
 Object Magnitude          : V = 13.48 mag
 Estimated Magnitude Drop  : 0.9 mag
 Estimated Max. Duration   : 5.1 sec
 Object Mean Diameter      : 39.6 km  (src: astorb)
 Speed of the shadow       : 7.8 km/s
 Elongation to Moon & Sun  : 85° (sunlit = 80%), Sun = 146°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 0.96 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#80
 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)