astro.wikisort.org - Asteroid

2014 SV₃₄₉ is a large trans-Neptunian object from the scattered disc located in the outermost region of the Solar System. It is one of the most distant objects from the Sun at 60.5 AU. The object is a dwarf planet candidate and measures approximately 423 kilometers (260 miles) in diameter. It was discovered on 19 September 2014, by American astronomer Scott Sheppard at the Cerro Tololo Observatory, Chile, and was provisionally designated 2014 SV₃₄₉.[1]

2014 SV₃₄₉

Orbital diagram of 2014 SV349
Discovery[1][2]
Discovered by	S. S. Sheppard
Discovery site	Cerro Tololo Obs.
Discovery date	19 September 2014
Designations
MPC designation	2014 SV349
Minor planet category	TNO[3] · SDO[4] near-scattered (DES)[5] p-DP[6]
Orbital characteristics[3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 5[1] · 6[3]
Observation arc	2.83 yr (1,035 d)
Aphelion	88.398 AU
Perihelion	35.026 AU
Semi-major axis	61.712 AU
Eccentricity	0.4324
Orbital period (sidereal)	484.81 yr (177,075 d)
Mean anomaly	297.13°
Mean motion	0° 0m 7.2s / day
Inclination	17.785°
Longitude of ascending node	56.651°
Argument of perihelion	23.717°
Physical characteristics
Mean diameter	423 km (est.)[4][7]
Absolute magnitude (H)	5.1[1][3]

Orbit and classification

This minor planet orbits the Sun at a distance of 35.0–88.4 AU once every 484 years and 10 months (177,075 days; semi-major axis of 61.71 AU). Its orbit has an eccentricity of 0.43 and an inclination of 18° with respect to the ecliptic.[3]

It is classified as a scattered disc object,[4] or "near-scattered" object in the classification of the Deep Ecliptic Survey,[5] that still gravitationally interacts with Neptune (30.1 AU) due to its relatively low perihelion of 35.0 AU, contrary to the extended-scattered/detached objects and sednoids which never approach Neptune as close.

Most distant objects from the Sun

2014 SV₃₄₉ is moving closer to the Sun and will come to perihelion in 2106.[3] As of 2021^[update], it is at 60.5 AU from the Sun,[8] which makes it one of the most distant objects in the Solar System.[9]

Physical characteristics

Based on a generic magnitude-to-diameter conversion, 2014 SV₃₄₉ measures approximately 423 kilometers (260 miles) in diameter, for an assumed albedo of 0.9 and an magnitude of 5.1.[4][7] Mike Brown considers this object to be a likely dwarf planet candidate ("probably") estimating a mean-diameter of 449 km (280 mi).[6] As of 2021^[update], no rotational lightcurve for this object has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown.[3]

See also

• List of possible dwarf planets
• List of Solar System objects most distant from the Sun

References

External links

• List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
• 2014 SV349 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2014 SV349 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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