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| Discovery [1] | |
|---|---|
| Discovered by | Pan-STARRS 1 |
| Discovery site | Haleakalā Obs. |
| Discovery date | 25 August 2012 |
| Designations | |
| (501581) 2014 OB394 | |
| 2014 OB394 | |
| TNO [2] ·other [3] p-DP [4] · distant [1] | |
| Orbital characteristics [2] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 5.08 yr (1,857 d) |
| Aphelion | 58.222 AU |
| Perihelion | 35.036 AU |
| 46.629 AU | |
| Eccentricity | 0.2486 |
| 318.42 yr (116,302 d) | |
| 353.23° | |
| 0° 0m 11.16s / day | |
| Inclination | 20.739° |
| 8.0853° | |
| 9.7242° | |
| Physical characteristics | |
| 255 km (est.) [4] 267 km(est.) [3] | |
| 0.08(assumed) [4] 0.09(assumed) [3] | |
| 6.1 [1] [2] | |
(501581) 2014 OB394, provisional designation 2014 OB394, is a trans-Neptunian object from the outermost region of the Solar System, approximately 260 kilometers (160 miles) in diameter. It was discovered on 25 August 2012, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States. [1] The weak dwarf planet candidate was numbered in 2017 and remains without a name.
2014 OB394 orbits the Sun at a distance of 35.0–58.2 AU once every 318 years and 5 months (116,302 days; semi-major axis of 46.63 AU). Its orbit has an eccentricity of 0.25 and an inclination of 21° with respect to the ecliptic. [2] The body's observation arc begins with its official discovery observation at Haleakala Observatory in August 2012. [1]
This minor planet was numbered by the Minor Planet Center on 5 October 2017 and received the number 501581 in the minor planet catalog ( M.P.C. 106397). [5] As of 2018, it has not been named. [1]
According to American astronomer Michael Brown and the Johnston's archive, 2014 OB394 measures 255 and 267 kilometers in diameter based on an assumed albedo of 0.08 and 0.09, respectively. [3] [4] On his website, Brown lists this object as a "possible" dwarf planet (200–400 km), which is the category with the lowest certainty in his 5-class taxonomic system. [4] As of 2018, no spectral type and color indices, nor a rotational lightcurve have been obtained from spectroscopic and photometric observations. The body's color, rotation period, pole and shape remain unknown. [2] [6]
