Cora»Occultation

2025-04-18 / UCAC4 471-046501 / (129315) 2005 SS257

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Marcin Filipek	O+	VID	M250	PL	GPS	21:53:36	21:54:04.79	21:54:05.04	21:54:36	0.03	0.03	0.25	3.0
2	show	Olivier Schreurs	O+	VID	M254	BE	GPS	21:54:28	21:55:25.65	21:55:26.07	21:56:27	0.04	0.06	0.42	5.1

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#38 : 7d091920-ddb6-11f0-547e-c132fff582a3 [db: observed]

Using prediction 7d091920-ddb6-11f0-547e-c132fff582a3 for map and profile fit

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Event Details
Occultation UUID [and DB] : 7d091920-ddb6-11f0-547e-c132fff582a3 [observed] Occultation Date + Time : 2025-04-18 at 21:55:12 UT +/- 0.01 min [1] Object Designation : (129315) 2005 SS257 Orbit Class : MBA Star Designation : GDR3 3894526230612246784 Star Coordinates (ICRF) : RA = 12 07 33.2455, DE = +04 04 04.945 [2] Star Magnitudes : G = 13.06 mag, RP = 12.58 mag, BP = 13.37 mag Object Magnitude : V = 19.74 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.3 sec Object Mean Diameter : 3.9 km (src: astorb) Speed of the shadow : 12.1 km/s Elongation to Moon & Sun : 94° (sunlit = 72%), Sun = 151° Cross-track uncertainty : 4.0 mas = 6 km = 1.77 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 1 (0:false, 1:true) Ephemeris Reference : JPL#38 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 7d091920-ddb6-11f0-547e-c132fff582a3 [observed]

 Occultation Date + Time   : 2025-04-18 at 21:55:12 UT +/- 0.01 min  [1]
 Object Designation        : (129315) 2005 SS257
 Orbit Class               : MBA
 Star Designation          : GDR3 3894526230612246784
 Star Coordinates (ICRF)   : RA = 12 07 33.2455, DE = +04 04 04.945  [2]
 Star Magnitudes           : G = 13.06 mag, RP = 12.58 mag, BP = 13.37 mag
 Object Magnitude          : V = 19.74 mag
 Estimated Magnitude Drop  : 6.7 mag
 Estimated Max. Duration   : 0.3 sec
 Object Mean Diameter      : 3.9 km  (src: astorb)
 Speed of the shadow       : 12.1 km/s
 Elongation to Moon & Sun  : 94° (sunlit = 72%), Sun = 151°
 Cross-track uncertainty   : 4.0 mas = 6 km = 1.77 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 1  (0:false, 1:true)

 Ephemeris Reference       : JPL#38
 Note                      : FP:true

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

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