(523706) 2014 HF200

(523706) 2014 HF₂₀₀
Discovery^[1]
Discovered by	Pan-STARRS 1
Discovery site	Haleakalā Obs.
Discovery date	20 May 2012
Designations
MPC designation	(523706) 2014 HF₂₀₀
Alternative designations	2014 HF₂₀₀
Minor planet category	TNO^[2] · SDO^[3] p-DP^[4] · distant^[1]
Orbital characteristics^[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2 · 1^[1]
Observation arc	7.11 yr (2,596 d)
Aphelion	88.039 AU
Perihelion	35.479 AU
Semi-major axis	61.759 AU
Eccentricity	0.4255
Orbital period (sidereal)	485.36 yr (177,277 d)
Mean anomaly	348.48°
Mean motion	0° 0^m 7.2^s / day
Inclination	9.7100°
Longitude of ascending node	21.497°
Time of perihelion	≈ 27 March 2035^[5] ±2 days
Argument of perihelion	253.41°
Physical characteristics
Mean diameter	293 km (est.)^[3] 302 km (est.)^[4]
Geometric albedo	0.08 (assumed)^[4] 0.09 (assumed)^[3]
Absolute magnitude (H)	5.9^[1]^[2]

(523706) 2014 HF₂₀₀ (provisional designation 2014 HF₂₀₀) is a trans-Neptunian object on an eccentric orbit from the scattered disc, located in the outermost region of the Solar System. It was discovered on 20 May 2012, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States.^[1] The dwarf planet candidate measures approximately 300 kilometers (190 miles) in diameter.

Orbit and classification

2014 HF₂₀₀ is a scattered disc object and orbits the Sun at a distance of 35.5–88.0 AU once every 485 years and 4 months (177,277 days; semi-major axis of 61.76 AU). Its orbit has an eccentricity of 0.43 and an inclination of 10° with respect to the ecliptic.^[2]

The body's observation arc begins with a precovery taken by Pan-STARRS in May 2010, two years prior to its official discovery observation.^[1] It still has a small orbital uncertainty of 1 and 2, respectively.^[1]^[2]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 and received the number 523706 in the minor planet catalog (M.P.C. 111779).^[6] As of 2018, it has not been named.^[1]

Physical characteristics

According to the Johnston's archive and American astronomer Michael Brown, 2014 HF₂₀₀ measures 293 and 302 kilometers in diameter based on an assumed albedo of 0.09 and 0.08, respectively.^[3]^[4] On his website, Michael 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]^[7]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h "523706 (2014 HF200)". Minor Planet Center. Retrieved 30 November 2018.
^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 523706 (2014 HF200)" (2017-06-26 last obs.). Jet Propulsion Laboratory. Retrieved 30 November 2018.
^ ^a ^b ^c ^d Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 29 November 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 29 November 2018.
^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 November 2018.
^ "LCDB Data for (523706)". Asteroid Lightcurve Database (LCDB). Retrieved 30 November 2018.

External links

List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
M.P.E.C. statistics for F51 – All MPECs
Discovery Circumstances: Numbered Minor Planets (520001)-(525000) – Minor Planet Center
(523706) 2014 HF200 at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
(523706) 2014 HF200 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

v t e Minor planets navigator
(523706) 2014 HF₂₀₀

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	Centaur Neptune trojan Damocloid Trans-Neptunian object Detached Kuiper belt Oort cloud Scattered disc

Comets

Other

v t e Trans-Neptunian objects
TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects Neptune trojans Plutinos Twotinos TNO moons
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Sednoids	90377 Sedna 2012 VP113 541132 Leleākūhonua

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