Astronomy:2014 SV349

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2014 SV349
2014 SV349-orbit.png
Orbital diagram of 2014 SV349
Discovery[1][2]
Discovered byS. S. Sheppard
Discovery siteCerro Tololo Obs.
Discovery date19 September 2014
Designations
2014 SV349
Minor planet category
Orbital characteristics[3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 5[1] · 6[3]
Observation arc2.83 yr (1,035 d)
|{{{apsis}}}|helion}}88.398 AU
|{{{apsis}}}|helion}}35.026 AU
61.712 AU
Eccentricity0.4324
Orbital period484.81 yr (177,075 d)
Mean anomaly297.13°
Mean motion0° 0m 7.2s / day
Inclination17.785°
Longitude of ascending node56.651°
23.717°
Physical characteristics
Mean diameter423 km (est.)[4][7]
Absolute magnitude (H)5.1[1][3]


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]

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), 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), 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

References

External links