Cora»OccDetail

Stellar Occultation by (175113) 2004 PF115 on 2025-09-21 (22:28:17 UT)

Event Details
Occultation UUID [and db] : 07e41480-4098-11f0-4ed7-8cbcfff70609 [cetnos] Occultation Date + Time : 2025-09-21 at 22:28:17 UT +/- 0.43 min [1] Object Designation : (175113) 2004 PF115 Star Designation : GDR3 2394581642049507328 Star Coordinates (ICRF) : RA = 23 38 56.4968, DE = -17 07 07.981 [2] Star Magnitudes : G = 15.78 mag, RP = 15.25 mag, BP = 16.16 mag Object Magnitude : V = 20.72 mag Estimated Magnitude Drop : 5.0 mag Estimated Max. Duration : 17.6 sec Speed of the shadow : 24.7 km/s Object Mean Diameter : 434.0 km (src: CORA+astorb) => apparent = 15 mas Apparent Motion : 0.0500 arcs/min @ PA = 249 deg Horizontal Parallax : 0.2160 arcs Dynamical Class : TNO Elongation to Moon & Sun : 161° (sunlit = 0%), Sun = 163° Cross-track uncertainty : 7.3 mas = 215 km = 0.50 path-width (1-sig) RUWE and duplicate source : 1.06 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#23 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] : 07e41480-4098-11f0-4ed7-8cbcfff70609 [cetnos]

 Occultation Date + Time   : 2025-09-21 at 22:28:17 UT +/- 0.43 min  [1]
 Object Designation        : (175113) 2004 PF115
 Star Designation          : GDR3 2394581642049507328
 Star Coordinates (ICRF)   : RA = 23 38 56.4968, DE = -17 07 07.981  [2]
 Star Magnitudes           : G = 15.78 mag, RP = 15.25 mag, BP = 16.16 mag
 Object Magnitude          : V = 20.72 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 17.6 sec
 Speed of the shadow       : 24.7 km/s
 Object Mean Diameter      : 434.0 km  (src: CORA+astorb) => apparent = 15 mas
 Apparent Motion           : 0.0500 arcs/min @ PA = 249 deg
 Horizontal Parallax       : 0.2160 arcs
 Dynamical Class           : TNO
 Elongation to Moon & Sun  : 161° (sunlit = 0%), Sun = 163°
 Cross-track uncertainty   : 7.3 mas = 215 km = 0.50 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#23

 Object is a <TNOs are Cool> target !

 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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