Cora»Occultation

2025-12-31 / UCAC4 368-040059 / (447178) 2005 RO43

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O-	VID	M300	ES	GPS	02:46:51	::	::	02:51:51
2	show	Deborah Smith	O-	VID	M250	ES	GPS	02:46:54	::	::	02:51:55

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#20 (24-02-23) : 3b1d1ae0-d294-11ee-7567-e3efee2f661e [db: cetnos]

JPL#24 : 380bbad0-408b-11f0-4ed7-b50562f7033b [db: cetnos]

Using prediction 380bbad0-408b-11f0-4ed7-b50562f7033b for map and profile fit

Get observations as KML file (reduced site location resolution)

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 380bbad0-408b-11f0-4ed7-b50562f7033b [cetnos] Occultation Date + Time : 2025-12-31 at 02:52:18 UT +/- 1.17 min [1] Object Designation : (447178) 2005 RO43 Orbit Class : CEN Star Designation : GDR3 5718298743276254464 Star Coordinates (ICRF) : RA = 07 55 42.8544, DE = -16 30 41.735 [2] Star Magnitudes : G = 15.25 mag, RP = 14.75 mag, BP = 15.57 mag Object Magnitude : V = 19.15 mag Estimated Magnitude Drop : 3.9 mag Estimated Max. Duration : 6.6 sec Object Mean Diameter : 129.3 km (src: CORA+astorb) Speed of the shadow : 19.5 km/s Elongation to Moon & Sun : 78° (sunlit = 85%), Sun = 137° Cross-track uncertainty : 45.0 mas = 477 km = 3.69 path-width (1-sig) RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#24 Object is a "TNOs are cool" target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 380bbad0-408b-11f0-4ed7-b50562f7033b [cetnos] Occultation Date + Time : 2025-12-31 at 02:52:18 UT +/- 1.17 min [1] Object Designation : (447178) 2005 RO43 Orbit Class : CEN Star Designation : GDR3 5718298743276254464 Star Coordinates (ICRF) : RA = 07 55 42.8544, DE = -16 30 41.735 [2] Star Magnitudes : G = 15.25 mag, RP = 14.75 mag, BP = 15.57 mag Object Magnitude : V = 19.15 mag Estimated Magnitude Drop : 3.9 mag Estimated Max. Duration : 6.6 sec Object Mean Diameter : 129.3 km (src: CORA+astorb) Speed of the shadow : 19.5 km/s Elongation to Moon & Sun : 78° (sunlit = 85%), Sun = 137° Cross-track uncertainty : 45.0 mas = 477 km = 3.69 path-width (1-sig) RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#24 Object is a "TNOs are cool" target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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