(26375) 1999 DE9
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- The correct title of this article is (26375) 1999 DE9. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
| Discovery | |
|---|---|
| Discovered by: | Chadwick A. Trujillo and Jane X. Luu |
| Discovery date: | 20 February 1999 |
| MPC designation: | (26375) 1999 DE9 |
| Alternative names: | none |
| Minor planet category: | TNO |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 11816.233 Gm (78.987 AU) |
| Perihelion distance: | 4835.563 Gm (32.324 AU) |
| Semi-major axis: | 8325.898 Gm (55.655 AU) |
| Eccentricity: | 0.419 |
| Orbital period: | 151655.072 d (415.21 a) |
| Avg. orbital speed: | 3.81 km/s |
| Mean anomaly: | 17.891° |
| Inclination: | 7.620° |
| Longitude of ascending node: | 322.993° |
| Argument of perihelion: | 159.961° |
| Physical characteristics | |
| Dimensions: | 505 km[1] |
| Mass: | 1.3×1020? kg |
| Mean density: | 2.0? g/cm³ |
| Escape velocity: | 0.2670? km/s |
| Sidereal rotation period: | ? d |
| Albedo: | 0.10? |
| Temperature: | ~37 K |
| Spectral type: | ? |
| Absolute magnitude: | 4.7 |
(26375) 1999 DE9 (also written (26375) 1999 DE9) is an object of the solar system located beyond the orbit of Neptune. It was discovered in 1999 by Chad Trujillo and Jane X. Luu. It is classified as a scattered disk object.
The 417-year orbit of this object has a 2:5 resonance with Neptune's orbit. Spectral analysis has shown traces of ice.
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | (26375) 1999 DE9 | Next minor planet |
| List of asteroids | ||
Kuiper belt: Orcus · Pluto · Ixion · 2002 UX25 · Varuna · 2002 TX300 · 2003 EL61 · Quaoar · 2005 FY9 · 2002 AW197
Scattered disc: 2002 TC302 · Eris · 2004 XR190 · Sedna
For pronunciation, see: Centaur and TNO pronunciation.
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
| The Solar System |
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| The Sun · Mercury · Venus · Earth · Mars · Ceres · Jupiter · Saturn · Uranus · Neptune · Pluto · Eris |
| Planets · Dwarf planets · Moons: Terrestrial · Martian · Asteroidal · Jovian · Saturnian · Uranian · Neptunian · Plutonian · Eridian |
| Small bodies: Meteoroids · Asteroids (Asteroid belt) · Centaurs · TNOs (Kuiper belt/Scattered disc) · Comets (Oort cloud) |
| See also astronomical objects, the solar system's list of objects, sorted by radius or mass, and the Astronomy Portal |
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