![]() 2006 QH181 imaged by the Hubble Space Telescope in 2010 | |
Discovery [1] | |
---|---|
Discovery site | Cerro Tololo Obs. |
Discovery date | 21 August 2006 |
Designations | |
2006 QH181 | |
TNO [2] · SDO [3] [4] · distant [1] | |
Orbital characteristics [1] | |
Epoch 13 September 2023 (JD 2460200.5) | |
Uncertainty parameter 5 | |
Observation arc | 14.18 yr (5,178 days) |
Aphelion | 93.977 AU |
Perihelion | 38.774 AU |
66.375 AU | |
Eccentricity | 0.4158 |
541 yr | |
113.85° | |
0° 0m 6.561s / day | |
Inclination | 19.063 |
73.85 | |
208.75 | |
Physical characteristics | |
350–560 km (est. 0.08–0.20) [5] | |
4.62 [2] [1] | |
2006 QH181 is a trans-Neptunian object (TNO) in the scattered disc. [3] [4]
2006 QH181 orbits the Sun beyond Neptune with an orbital period of 541 years. It has a highly elliptical orbit with a semi-major axis of 66.4 astronomical units (AU) and an orbital eccentricity of 0.42. In its eccentric orbit, 2006 QH181 comes within 38.8 AU from the Sun at perihelion and 94.0 AU at aphelion. It has an orbital inclination of about 19° with respect to the ecliptic. [2]
It came to perihelion around 1858. [2] It is currently 83.8 AU from the Sun [6] and moving away from the Sun at 1.04 kilometers per second (2,300 miles per hour). [7] The only large objects currently farther from the Sun are Eris (96.1 AU), [8] 2014 UZ224 (90.9 AU), 2015 TH367 (~89 AU), Gonggong (88.0 AU), [9] Sedna (85.1 AU), [10] 2013 FS28 (84.8 AU), and 2014 FC69 (84.7 AU). Because it is so far from the Sun, it only has an apparent magnitude of 23.6. [6]