Cora»Occultation

2025-12-01 / TYC 4806-00060-1 / (74517) 1999 FU31

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Marc Serrau	O-	VID	T400	FR	NTP	04:41:27	::	::	04:43:27

UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#54 : c9e4c760-ddb8-11f0-547e-b9592f78eb79 [db: observed]

Using prediction c9e4c760-ddb8-11f0-547e-b9592f78eb79 for map and profile fit

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Event Details
Occultation UUID [and DB] : c9e4c760-ddb8-11f0-547e-b9592f78eb79 [observed] Occultation Date + Time : 2025-12-01 at 04:50:59 UT +/- 0.01 min [1] Object Designation : (74517) 1999 FU31 Orbit Class : MBA Star Designation : GDR3 3104759500969647488 Star Coordinates (ICRF) : RA = 06 31 52.6308, DE = -04 12 51.302 [2] Star Magnitudes : G = 10.43 mag, RP = 10.09 mag, BP = 10.64 mag Object Magnitude : V = 17.98 mag Estimated Magnitude Drop : 7.6 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 6.0 km (src: astorb) Speed of the shadow : 11.2 km/s Elongation to Moon & Sun : 85° (sunlit = 80%), Sun = 140° Cross-track uncertainty : 0.4 mas = 0 km = 0.09 path-width (1-sig) RUWE and duplicate source : 1.39 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#54 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : c9e4c760-ddb8-11f0-547e-b9592f78eb79 [observed] Occultation Date + Time : 2025-12-01 at 04:50:59 UT +/- 0.01 min [1] Object Designation : (74517) 1999 FU31 Orbit Class : MBA Star Designation : GDR3 3104759500969647488 Star Coordinates (ICRF) : RA = 06 31 52.6308, DE = -04 12 51.302 [2] Star Magnitudes : G = 10.43 mag, RP = 10.09 mag, BP = 10.64 mag Object Magnitude : V = 17.98 mag Estimated Magnitude Drop : 7.6 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 6.0 km (src: astorb) Speed of the shadow : 11.2 km/s Elongation to Moon & Sun : 85° (sunlit = 80%), Sun = 140° Cross-track uncertainty : 0.4 mas = 0 km = 0.09 path-width (1-sig) RUWE and duplicate source : 1.39 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#54 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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