(499514) 2010 OO 127
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Asteroid (499514) 2010 OO 127 |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type |
CKBO («Hot») or SDO , «Distant Object» |
| Major semi-axis | 42.296 AU |
| eccentricity | 0.127 |
| Perihelion - aphelion | 36.92 AU - 47.671 AU |
| Inclination of the orbit plane | 25.9 ° |
| Length of the ascending node | 219.7 ° |
| Argument of the periapsis | 246.5 ° |
| Time of passage of the perihelion | February 23, 2109 |
| Sidereal period | 275 a 0.8 M |
| Mean orbital velocity | 4.542 km / s |
| Physical Properties | |
| Medium diameter | approx. 501 km |
| Albedo | 0.07-0.09 |
| Absolute brightness | 4.6 likes |
| history | |
| Explorer |
Pan-STARRS : B. Gibson, T. Goggia, N. Primak, A. Schultz, M. Willman |
| Date of discovery | July 31, 2010 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(499514) 2010 OO 127 is a large trans-Neptunian object in the Kuiper Belt , which is classified as a Cubewano or a Scattered disc object in terms of orbital dynamics . Because of its size, the asteroid is a dwarf planet candidate .
discovery
2010 OO 127 was discovered on July 31, 2010 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman with the 1.8 m Pan-STARRS telescope (PS1 ) discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 26, 2016.
The observation arc of the asteroid begins with the official discovery observation in July 2010. In October 2017, a total of 37 observations were made over a period of 7 years. The last observation so far was carried out in July 2017 at the Farpoint Observatory . (As of February 6, 2019)
properties
Orbit
2010 OO 127 orbits the sun in 275.07 years on a slightly elliptical orbit between 36.92 AU and 47.67 AU from its center. The orbit eccentricity is 0.127, the orbit is inclined 25.92 ° with respect to the ecliptic . Currently, the planetoid is 45.30 AU from the Sun and 46.14 AU from Earth . The next time it passes through perihelion in 2109, the last perihelion should have been in 1834.
Marc Buie ( DES ) classifies the planetoid as SDO , while the Minor Planet Center classifies it as a non-SDO and generally as a “distant object” . The Johnston's Archive runs it against it as Cubewano , where it to the ground dynamically "hot" classical KBO would belong.
Size and rotation
A diameter of around 501 km is currently assumed, based on a reflectivity of 7% and an absolute brightness of 5.0 m . The apparent magnitude of 2010 OO 127 is 21.39 m .
Since it can be assumed that 2010 OO 127 is in hydrostatic equilibrium due to its size and must therefore be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown assumes that 2010 OO 127 is likely a dwarf planet.
| year | Dimensions km | source |
|---|---|---|
| 2018 | 533.0 | Johnston |
| 2018 | 501.0 | Brown |
| The most precise determination is marked in bold . | ||
See also
- List of trans-Neptunian objects
- List of dwarf planets of the solar system
- List of asteroids
- List of moons from asteroids
Web links
- How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
- Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)
Individual evidence
- ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 499514 . SwRI (Space Science Department). Retrieved February 6, 2019.
- ↑ a b c (499514) 2010 OO127 at the IAU Minor Planet Center (English)
- ↑ v ≈ π * a / period (1 + sqrt (1-e²))
- ↑ MPC : MPEC 2016-O312: 2010 OO127 . IAU . July 26, 2016. Retrieved February 6, 2019.
- ↑ (499514) 2010 OO127 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 6, 2019.
- ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved February 6, 2019.
- ^ A b Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 6, 2019.
- ↑ (499514) 2010 OO127 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved February 6, 2019.