Cora»OccDetail

Collaborative Occultation Resources and Archive (CORA)

Stellar Occultation by (120347) Salacia on 2024-08-17 (23:07:29 UT)

Event Details
Occultation UUID [and db] : f91f3000-c352-11ef-5276-8c337b9bf686 [observed] Occultation Date + Time : 2024-08-17 at 23:07:29 UT +/- 0.33 min [1] Object Designation : (120347) Salacia Star Designation : GDR3 2853444540521856896 Star Coordinates (ICRF) : RA = 23 57 24.7005, DE = +26 22 03.469 [2] Star Magnitudes : G = 15.95 mag, RP = 15.31 mag, BP = 16.45 mag Object Magnitude : V = 20.84 mag Estimated Magnitude Drop : 4.9 mag Estimated Max. Duration : 26.3 sec Object Mean Diameter : 491.4 km (src: astorb) Orbital Class : TNO Speed of the shadow : 18.7 km/s Elongation to Moon & Sun : 74° (sunlit = 95%), Sun = 130° Cross-track uncertainty : 7.7 mas = 249 km = 0.51 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#36 Object is a <TNOs are Cool> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and db] : f91f3000-c352-11ef-5276-8c337b9bf686 [observed]

 Occultation Date + Time   : 2024-08-17 at 23:07:29 UT +/- 0.33 min  [1]
 Object Designation        : (120347) Salacia
 Star Designation          : GDR3 2853444540521856896
 Star Coordinates (ICRF)   : RA = 23 57 24.7005, DE = +26 22 03.469  [2]
 Star Magnitudes           : G = 15.95 mag, RP = 15.31 mag, BP = 16.45 mag
 Object Magnitude          : V = 20.84 mag
 Estimated Magnitude Drop  : 4.9 mag
 Estimated Max. Duration   : 26.3 sec
 Object Mean Diameter      : 491.4 km  (src: astorb)
 Orbital Class             : TNO
 Speed of the shadow       : 18.7 km/s
 Elongation to Moon & Sun  : 74° (sunlit = 95%), Sun = 130°
 Cross-track uncertainty   : 7.7 mas = 249 km = 0.51 path-width (1-sig)
 RUWE and duplicate source : 0.96 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#36

 Object is a <TNOs are Cool> target !

 [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

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Interactive map

Aladin Sky Atlas
23 57 24.700 +26 22 3.47 FoV: 29.96' +– × × Go to:

Aladin Lite direct link (has Gaia overlay)

Apply ephem. offset (O-C) in RA & DE and CTU:
CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.