(19255) 1994 VK8

(19255) 1994 VK₈
Discovery
Discovered by	Alan Fitzsimmons Donal O'Ceallaigh, Iwan P. Williams^[1]
Discovery date	8 November 1994
Designations
MPC designation	(19255) 1994 VK₈
Alternative names	none
Minor planet category	cubewano^[2]
Orbital characteristics^[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 4
Observation arc	7347 days (20.11 yr)
Aphelion	44.40611 AU (6.643060 Tm)
Perihelion	41.34116 AU (6.184550 Tm)
Semi-major axis	42.87364 AU (6.413805 Tm)
Eccentricity	0.035744
Orbital period	280.73 yr (102538 d)
Average orbital speed	4.56 km/s
Mean anomaly	267.925°
Mean motion	0° 0^m 12.639^s / day
Inclination	1.48856°
Longitude of ascending node	72.3924°
Argument of perihelion	112.111°
Earth MOID	40.3437 AU (6.03533 Tm)
Jupiter MOID	35.8875 AU (5.36869 Tm)
Jupiter Tisserand parameter	5.857
Physical characteristics
Dimensions	175 km^[3]
Mass	5.6×10¹⁸ kg
Mean density	2.0 g/cm³
Equatorial surface gravity	0.0489 m/s²
Equatorial escape velocity	0.0925 km/s
Rotation period	9 h (0.38 d)
Sidereal rotation period	9 hr^[1]
Geometric albedo	0.09 (assumed)
Temperature	~43 K
Spectral type	?
Absolute magnitude (H)	7.0^[1]

(19255) 1994 VK₈, also written as (19255) 1994 VK8, is a trans-Neptunian object (TNO) of the cubewano class. It was discovered on November 8, 1994, by Alan Fitzsimmons, Donal O'Ceallaigh, and Iwan P. Williams.

(19255) 1994 VK₈ is the fourth cubewano to be given an official Minor Planet Center catalog number.^[4] The first three official cubewanos are (15760) 1992 QB1, (15807) 1994 GV9, and (16684) 1994 JQ1.

References

1 2 3 4 "JPL Small-Body Database Browser: 19255 (1994 VK8)" (2000-11-27 last obs). Retrieved 8 April 2016.
↑ Marc W. Buie (1997-10-27). "Orbit Fit and Astrometric record for 19255". SwRI (Space Science Department). Retrieved 2008-09-29.
↑ Wm. Robert Johnston (22 August 2008). "List of Known Trans-Neptunian Objects". Johnston's Archive. Archived from the original on 28 September 2008. Retrieved 2008-09-29.
↑ "MPEC 2008-O05 : Distant Minor Planets (2008 AUG. 2.0 TT)". Minor Planet Center. 2008-07-17. Archived from the original on 7 December 2008. Retrieved 2008-09-29.

External links

Orbital simulation from JPL (Java)
Ephemeris
(19255) 1994 VK8 at the JPL Small-Body Database

Discovery · Orbit diagram · Orbital elements · Physical parameters

Minor planets navigator

(19254) 1994 VD7 (19255) 1994 VK₈ (19256) 1994 WA4

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