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486958 Arrokoth (2014 MU69)
Classification: TransNeptunian Object          SPK-ID: 2486958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05280816822226541 0.40702  
a 44.65990035516136 2.5878 au
q 42.30149282441639 15.728 au
i 2.446865294720699 0.031155 deg
node 159.1350352790345 1.1932 deg
peri 182.3779381538967 223.64 deg
M 311.8695581572189 173.7 deg
tp 2473774.957538395900
(2060-Nov-11.45753840)
53863 TDB
period 109012.1867353992
298.46
9474.9
25.94
d
yr
n .003302383070929612 0.00028703 deg/d
Q 47.01830788590633 2.7244 au
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      118 days  
   first obs. used      2014-06-26  
   last obs. used      2014-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      5  
   norm. resid. RMS      .014518  
   source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 15:31:42  

Additional Information
 Earth MOID = 41.2916 au 
 Jupiter MOID = 37.3094 au 
 T_jup = 5.962 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.1   n/a MPO398908  
rotation period rot_per 15.918 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Porter, S.; Beyer, R.; Keane, J.; Umurhan, O.; et al. (2019) EPSC-DPS Joint Meeting, 2019 September 15-20. Geneva, Switzerland, id. EPSC-DPS2019-311.]

486958 Arrokoth           Discovered 2014 by M. W. Buie and the New Horizons Search Team.
Arrokoth is the word for "sky" from the Powhatan language of native people from the Chesapeake Bay region. Institutions in this region played a prominent role in facilitating the discovery and exploration of this ancient and distant object.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2019-12-12Last Updated: 2019-12-13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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