(144908) 2004 YH32 - Asteroid - astro.wikisort.org

astro.wikisort.org - Asteroid

(144908) 2004 YH₃₂, provisional designation 2004 YH₃₂, is a centaur and damocloid orbiting the Sun with a very high inclination of almost 80°.[3] It was discovered on 18 December 2004 by the Siding Spring Survey at the Siding Spring Observatory in Australia. The critical and unusual object measures approximately 12 kilometers (7.5 miles) in diameter.[1]

(144908) 2004 YH₃₂
Discovery[1][2]
Discovered by	SSS
Discovery site	Siding Spring Obs.
Discovery date	18 December 2004
Designations
MPC designation	(144908) 2004 YH₃₂
Alternative designations	2004 YH₃₂
Minor planet category	centaur[3] · damocloid[4] unusual[5] · distant[1]
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 3
Observation arc	2.08 yr (758 d)
Aphelion	12.777 AU
Perihelion	3.5507 AU
Semi-major axis	8.1641 AU
Eccentricity	0.5651
Orbital period (sidereal)	23.33 yr (8,520 d)
Mean anomaly	212.33°
Mean motion	0° 2^m 32.28^s / day
Inclination	78.978°
Longitude of ascending node	47.727°
Argument of perihelion	348.73°
T_Jupiter	1.0330
Physical characteristics
Mean diameter	12 km[4]
Geometric albedo	0.09 (assumed)[4]
Absolute magnitude (H)	12.9[1][3]

Orbit and classification

It orbits the Sun at a distance of 3.6–12.8 AU once every 23 years and 4 months (8,520 days; semi-major axis of 8.16 AU). Its orbit has an eccentricity of 0.57 and an inclination of 79° with respect to the ecliptic.[3] The body's observation arc begins with its official discovery observation at the Siding Spring Observatory in December 2004.[1]

Physical characteristics

Johnston's Archive assumes a standard albedo of 0.09 and calculates a diameter of 12 kilometers based on an absolute magnitude of 12.9.[4]

References

"144908 (2004 YH32)". Minor Planet Center. Retrieved 20 November 2018.
"MPEC 2004-Y61 : 2004 YH32". Minor Planet Center. 25 December 2004. Retrieved 20 November 2018.
"JPL Small-Body Database Browser: 144908 (2004 YH32)" (2007-01-15 last obs.). Jet Propulsion Laboratory. Retrieved 20 November 2018.
Johnston, Wm. Robert (15 October 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 17 January 2018.
"List Of Other Unusual Objects". Minor Planet Center. 14 November 2018. Retrieved 20 November 2018.

External links

MPEC 2007-A22 : CRITICAL-LIST MINOR PLANETS (2007 JAN. 20.0 TT), Minor Planet Center
(144908) 2004 YH32, Small Bodies Data Ferret
(144908) 2004 YH32 at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
(144908) 2004 YH32 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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144907 Whitehorne (144908) 2004 YH₃₂

Small Solar System bodies

Minor planets

Designation Groups List Moon Meanings of names
Asteroid	Active Aten asteroid Asteroid belt Family Jupiter trojan Near-Earth Spectral types
Distant minor planet	Cis-Neptunian object Centaur Neptune trojan Damocloid Trans-Neptunian object Detached Kuiper belt Oort cloud Scattered disc

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