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(470308) 2007 JH₄₃
Discovery
Discovered by	Palomar Obs. Unaccredited: M. E. Schwamb M. E. Brown D. L. Rabinowitz
Discovery site	Palomar Obs.
Discovery date	10 May 2007
Designations
MPC designation	2007 JH₄₃
Minor planet category	TNO Scat-Near (DES)
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 3
Observation arc	31.34 yr (11,446 days)
Earliest precovery date	7 March 1984
Aphelion	40.566 AU (6.0686 Tm)
Perihelion	38.612 AU (5.7763 Tm)
Semi-major axis	39.589 AU (5.9224 Tm)
Eccentricity	0.0247
Orbital period (sidereal)	249.10 yr (90,983 days)
Mean anomaly	177.14°
Mean motion	0° 0 14.4 / day
Inclination	18.129°
Longitude of ascending node	64.584°
Argument of perihelion	4.7053°
Physical characteristics
Dimensions	505 km (assumed) 529.08 km (calculated)
Geometric albedo	0.09 (assumed) 0.10 (assumed)
Spectral type	C
Absolute magnitude (H)	4.49±0.05 (S) 4.5

(470308) 2007 JH₄₃ (provisional designation 2007 JH₄₃) is a trans-Neptunian object in the outer regions of the Solar System, approximately 500 kilometers in diameter. It was discovered on 10 May 2007, by the U.S. Palomar Observatory in California. The team of unaccredited astronomers at Palomar consisted of Megan E. Schwamb, Michael E. Brown and David L. Rabinowitz

The minor planet orbits the Sun at a distance of 38.6–40.6 AU once every 249 years and 1 month (90,983 days). Its orbit has an eccentricity of 0.02 and an inclination of 18° with respect to the ecliptic. The first precovery was taken at the Australian Siding Spring Observatory during the Digitized Sky Survey in March 1984, extending the body's observation arc by 23 years prior to its discovery observation. It came to perihelion around 1888.

Orbital classification

The Minor Planet Center lists 2007 JH₄₃ as a trans-Neptunian object or a distant object in the Kuiper belt. The Deep Ecliptic Survey currently shows it as a scattered object, based on a 10-million-year integration of the orbit.

^ "JPL Small-Body Database Browser: 470308 (2007 JH43)" (2015-07-09 last obs.). Jet Propulsion Laboratory. Retrieved 16 November 2016.
^ "470308 (2007 JH43)". Minor Planet Center. Retrieved 16 November 2016.
^ Marc W. Buie. "Orbit Fit and Astrometric record for 470308". SwRI (Space Science Department). Retrieved 27 May 2020.
^ Wm. Robert Johnston (24 March 2015). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2015-07-22.
^ "LCDB Data for (470308)". Asteroid Lightcurve Database (LCDB). Retrieved 16 November 2016.
Benecchi, Susan D.; Sheppard, Scott S. (May 2013). "Light Curves of 32 Large Transneptunian Objects". The Astronomical Journal. 145 (5): 19. arXiv:1301.5791. Bibcode:2013AJ....145..124B. doi:10.1088/0004-6256/145/5/124. S2CID 54183985. Retrieved 16 November 2016.
"MPEC 2010-S44 : DISTANT MINOR PLANETS (2010 OCT. 11.0 TT)". IAU Minor Planet Center. 2010-09-25. Retrieved 2014-04-06.

v t e Trans-Neptunian objects
TNO classes	Cubewanos Scattered-disc objects Detached objects Resonant objects Neptune trojans Plutinos Twotinos TNO moons
Dwarf planets (moons)	Orcus Vanth Pluto Charon Styx Nix Kerberos Hydra Haumea Namaka Hiʻiaka Ring Quaoar Weywot Rings Makemake MK2 Gonggong Xiangliu Eris Dysnomia Sedna
Sednoids	90377 Sedna 2012 VP113 541132 Leleākūhonua

Consensus

Candidate

Asteroids	Hygiea Interamnia
Centaurs	Chariklo Chiron Pholus 1999 OX₃ 2013 TC₁₄₆ 2014 NW₆₅
Plutinos	Huya Ixion 2001 QF₂₉₈ 2002 VR₁₂₈ 2002 XV₉₃ 2003 AZ₈₄ 2003 UZ₄₁₃ 2003 VS₂ 2007 JH₄₃ 2017 OF69
Twotinos	2002 WC₁₉
Cubewanos	Chaos Salacia Varda Varuna 1998 SN₁₆₅ 2002 AW₁₉₇ 2002 CY248 2002 KX₁₄ 2002 MS₄ 2002 UX₂₅ 2003 QW₉₀ 2004 GV₉ 2004 NT₃₃ 2004 PF₁₁₅ 2004 TY₃₆₄ 2004 UX₁₀ 2005 RN₄₃ 2005 UQ₅₁₃ 2010 FX86
Other KBOs	1999 CD₁₅₈ 1999 DE₉ 2000 YW₁₃₄ 2002 XW₉₃ 2010 JO₁₇₉ 2010 VK₂₀₁ 2011 FW62 2011 GM₂₇ 2013 FZ₂₇ 2014 UM₃₃ 2015 AM₂₈₁ 2015 RR₂₄₅
Scattered disc objects	Gǃkúnǁʼhòmdímà Dziewanna 1996 GQ₂₁ 1996 TL₆₆ 2001 UR₁₆₃ 2002 TC₃₀₂ 2004 XA₁₉₂ 2005 QU₁₈₂ 2005 RM₄₃ 2006 QH181 2008 OG₁₉ 2010 KZ39 2010 RE₆₄ 2010 RF₄₃ 2010 JO179 2010 TJ 2010 VZ₉₈ 2013 FY₂₇ 2014 AN₅₅ 2014 EZ₅₁ 2014 UZ224 2014 WK₅₀₉ 2015 KH162 2015 RR245 2017 FO161 2018 AG37 2018 VG18 2021 DR15 2021 LL37
Detached objects	2003 FY₁₂₈ 2003 QX₁₁₃ 2004 XR₁₉₀ 2005 TB₁₉₀ 2007 JJ₄₃ 2008 ST₂₉₁
Sednoids	2012 VP113

v t e Minor planets navigator
(470308) 2007 JH₄₃

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

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