Cora»Occultation

2025-08-20 / UCAC4 357-190836 / (15810) Arawn

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Tomas Janik	O-	CCD	T600	CZ	GPS	22:06:04	::	::	22:20:29
2	show	Wojciech Burzynski	O-	VID	T600	PL	GPS	22:06:15	::	::	22:21:24

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#12 : 4c5de160-ddb7-11f0-547e-305fffbf4bce [db: observed]

Using prediction 4c5de160-ddb7-11f0-547e-305fffbf4bce for map and profile fit

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 4c5de160-ddb7-11f0-547e-305fffbf4bce [observed] Occultation Date + Time : 2025-08-20 at 22:13:13 UT +/- 3.86 min [1] Object Designation : (15810) Arawn Orbit Class : TNO Star Designation : GDR3 6867492972179088896 Star Coordinates (ICRF) : RA = 20 04 48.1630, DE = -18 41 10.969 [2] Star Magnitudes : G = 14.31 mag, RP = 13.74 mag, BP = 14.7 mag Object Magnitude : V = 23.35 mag Estimated Magnitude Drop : 9.0 mag Estimated Max. Duration : 4.8 sec Object Mean Diameter : 99.9 km (src: astorb) Speed of the shadow : 20.7 km/s Elongation to Moon & Sun : 174° (sunlit = 6%), Sun = 151° Cross-track uncertainty : 81.3 mas = 2082 km = 20.85 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#12 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 4c5de160-ddb7-11f0-547e-305fffbf4bce [observed] Occultation Date + Time : 2025-08-20 at 22:13:13 UT +/- 3.86 min [1] Object Designation : (15810) Arawn Orbit Class : TNO Star Designation : GDR3 6867492972179088896 Star Coordinates (ICRF) : RA = 20 04 48.1630, DE = -18 41 10.969 [2] Star Magnitudes : G = 14.31 mag, RP = 13.74 mag, BP = 14.7 mag Object Magnitude : V = 23.35 mag Estimated Magnitude Drop : 9.0 mag Estimated Max. Duration : 4.8 sec Object Mean Diameter : 99.9 km (src: astorb) Speed of the shadow : 20.7 km/s Elongation to Moon & Sun : 174° (sunlit = 6%), Sun = 151° Cross-track uncertainty : 81.3 mas = 2082 km = 20.85 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#12 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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