Cora»Occultation

2023-12-29 / UCAC4 522-026645 / (850) Altona

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Serge Dramonis	O+	VID	M400	GR	GPS	20:10:30	20:12:26.78	20:12:31.64	20:14:00	0.25	0.25	4.86	77.3

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#78 : ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 [db: observed]

JPL#78 : 51cd82c0-ddb4-11f0-547e-652099d71bed [db: observed]

Using prediction ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 for map and profile fit

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 [observed] Occultation Date + Time : 2023-12-29 at 20:08:55 UT +/- 0.0 min [1] Object Designation : (850) Altona Orbit Class : MBA Star Designation : GDR3 3356480142549292544 Star Coordinates (ICRF) : RA = 06 30 47.8535, DE = +14 20 22.049 [2] Star Magnitudes : G = 14.61 mag, RP = 13.71 mag, BP = 15.42 mag Object Magnitude : V = 14.48 mag Estimated Magnitude Drop : 0.7 mag Estimated Max. Duration : 5.1 sec Object Mean Diameter : 80.9 km (src: astorb) Speed of the shadow : 15.9 km/s Elongation to Moon & Sun : 35° (sunlit = 92%), Sun = 171° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#78 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : ea492490-ddb0-11f0-547e-0bbcdbf5d6e8 [observed] Occultation Date + Time : 2023-12-29 at 20:08:55 UT +/- 0.0 min [1] Object Designation : (850) Altona Orbit Class : MBA Star Designation : GDR3 3356480142549292544 Star Coordinates (ICRF) : RA = 06 30 47.8535, DE = +14 20 22.049 [2] Star Magnitudes : G = 14.61 mag, RP = 13.71 mag, BP = 15.42 mag Object Magnitude : V = 14.48 mag Estimated Magnitude Drop : 0.7 mag Estimated Max. Duration : 5.1 sec Object Mean Diameter : 80.9 km (src: astorb) Speed of the shadow : 15.9 km/s Elongation to Moon & Sun : 35° (sunlit = 92%), Sun = 171° Cross-track uncertainty : 0.4 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#78 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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