Cora»Occultation

2025-12-28 / UCAC4 634-031242 / (17866) 1998 KV45

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Stefano Sposetti	O+	VID	M420	CH	GPS	18:30:22	18:31:25.325	18:31:26.065	18:32:22	0.010	0.010	0.74	11.7
2	show	Stefano Sposetti	O+	VID	M200	CH	GPS	18:30:08	18:31:25.366	18:31:26.05	18:33:00	0.020	0.020	0.68	10.7

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):

JPL62 : 492a6400-d997-11f1-43f3-f9293fff3c85 [db: observed]

Using prediction 492a6400-d997-11f1-43f3-f9293fff3c85 for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
X0,Y0 = -409.7, 23.4 km
Circular diameter = 12 km

From 2 chords (VID)

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 492a6400-d997-11f1-43f3-f9293fff3c85 [observed] Occultation Date + Time : 2025-12-28 at 18:26:24 UT +/- 0.0 min [1] Object Designation : (17866) 1998 KV45 Orbit Class : MBA Star Designation : GDR3 3453989407839009664 Star Coordinates (ICRF) : RA = 06 08 54.7309, DE = +36 41 11.871 [2] Star Magnitudes : G = 11.02 mag, RP = 10.27 mag, BP = 11.62 mag Object Magnitude : V = 17.98 mag Estimated Magnitude Drop : 7.0 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 7.2 km (src: astorb) Speed of the shadow : 15.8 km/s Elongation to Moon & Sun : 72° (sunlit = 61%), Sun = 166° Cross-track uncertainty : 0.3 mas = 0 km = 0.07 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL62 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 492a6400-d997-11f1-43f3-f9293fff3c85 [observed]

 Occultation Date + Time   : 2025-12-28 at 18:26:24 UT +/- 0.0 min  [1]
 Object Designation        : (17866) 1998 KV45
 Orbit Class               : MBA
 Star Designation          : GDR3 3453989407839009664
 Star Coordinates (ICRF)   : RA = 06 08 54.7309, DE = +36 41 11.871  [2]
 Star Magnitudes           : G = 11.02 mag, RP = 10.27 mag, BP = 11.62 mag
 Object Magnitude          : V = 17.98 mag
 Estimated Magnitude Drop  : 7.0 mag
 Estimated Max. Duration   : 0.5 sec
 Object Mean Diameter      : 7.2 km  (src: astorb)
 Speed of the shadow       : 15.8 km/s
 Elongation to Moon & Sun  : 72° (sunlit = 61%), Sun = 166°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL62
 Note                      : FP:true

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

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