(501581) 2014 OB394
| 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 | |
Mean diameter | 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.
Orbit and classification[edit]
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]
Numbering and naming[edit]
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]
Physical characteristics[edit]
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]
References[edit]
- ^ a b c d e f "501581 (2014 OB394)". Minor Planet Center. Retrieved 3 December 2018.
- ^ a b c d e "JPL Small-Body Database Browser: 501581 (2014 OB394)" (2017-09-25 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2018.
- ^ a b c d Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 December 2018.
- ^ a b c d e Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 3 December 2018.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 December 2018.
- ^ "LCDB Data for (501581)". Asteroid Lightcurve Database (LCDB). Retrieved 3 December 2018.
External links[edit]
- MPEC 2016-O53 : 2014 OB394, Minor Planet Electronic Circular, 16 July 2017
- M.P.E.C. statistics for F51 – All MPECs
- List of Transneptunian Objects, Minor Planet Center
- Discovery Circumstances: Numbered Minor Planets (500001)-(505000) – Minor Planet Center
- (501581) 2014 OB394 at AstDyS-2, Asteroids—Dynamic Site
- (501581) 2014 OB394 at the JPL Small-Body Database
