Cora»Occultation

2025-11-04 / UCAC4 393-130971 / (92273) 2000 CQ81

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Nosal, Paula Libic	O+	VID	M200	SK	NTP	17:42:35	17:43:34.466	17:43:34.899	17:44:44	0.017	0.017	0.43	5.8
2	show	Marek Harman	O+	VID	M350	SK	NTP	17:41:32	17:43:35.513	17:43:35.696	17:45:34	0.016	0.016	0.18	2.4

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#45 : b9088670-ddb8-11f0-547e-67cb2ffdf083 [db: observed]

Using prediction b9088670-ddb8-11f0-547e-67cb2ffdf083 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 = 2140.6, 27.0 km
Circular diameter = 7 km

From 2 chords (VID)

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : b9088670-ddb8-11f0-547e-67cb2ffdf083 [observed] Occultation Date + Time : 2025-11-04 at 17:39:39 UT +/- 0.01 min [1] Object Designation : (92273) 2000 CQ81 Orbit Class : MBA Star Designation : GDR3 6892289257189159936 Star Coordinates (ICRF) : RA = 21 20 10.9471, DE = -11 25 42.581 [2] Star Magnitudes : G = 11.41 mag, RP = 10.96 mag, BP = 11.7 mag Object Magnitude : V = 19.2 mag Estimated Magnitude Drop : 7.8 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 4.9 km (src: astorb) Speed of the shadow : 13.5 km/s Elongation to Moon & Sun : 72° (sunlit = 99%), Sun = 96° Cross-track uncertainty : 2.3 mas = 3 km = 0.79 path-width (1-sig) RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#45 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : b9088670-ddb8-11f0-547e-67cb2ffdf083 [observed]

 Occultation Date + Time   : 2025-11-04 at 17:39:39 UT +/- 0.01 min  [1]
 Object Designation        : (92273) 2000 CQ81
 Orbit Class               : MBA
 Star Designation          : GDR3 6892289257189159936
 Star Coordinates (ICRF)   : RA = 21 20 10.9471, DE = -11 25 42.581  [2]
 Star Magnitudes           : G = 11.41 mag, RP = 10.96 mag, BP = 11.7 mag
 Object Magnitude          : V = 19.2 mag
 Estimated Magnitude Drop  : 7.8 mag
 Estimated Max. Duration   : 0.4 sec
 Object Mean Diameter      : 4.9 km  (src: astorb)
 Speed of the shadow       : 13.5 km/s
 Elongation to Moon & Sun  : 72° (sunlit = 99%), Sun = 96°
 Cross-track uncertainty   : 2.3 mas = 3 km = 0.79 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#45
 Note                      : FP:true

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

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