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JPL Small-Body Database Browser
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(2013 UH9)
Classification: Amor [NEO]          SPK-ID: 3653321
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5972632591839502 2.2195e-08  
a 2.580463548867092 6.7672e-08 au
q 1.03924747946535 5.1916e-08 au
i 13.07307144297067 6.6495e-06 deg
node 222.1586014255118 1.4669e-05 deg
peri 186.9431095988888 1.9942e-05 deg
M 111.7078088894858 1.9291e-05 deg
tp 2458130.685893653371
(2018-Jan-12.18589365)
6.3091e-05 TDB
period 1514.066742210584
4.15
5.9559e-05
1.631e-07
d
yr
n .2377702316308652 9.3532e-09 deg/d
Q 4.121679618268834 1.0809e-07 au
  Orbit Determination Parameters
   # obs. used (total)      508  
   data-arc span      14928 days (40.87 yr)  
   first obs. used      1977-01-26  
   last obs. used      2017-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37411  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Dec-11 06:20:25  

Additional Information
 Earth MOID = .0501208 au 
 Jupiter MOID = 1.28513 au 
 T_jup = 3.117 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.5   n/a MPO435007  
rotation period rot_per 16.3 h n/a LCDB (Rev. 2019-January); 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:
[Warner, B.D. (2014) Minor Planet Bull. 41, 113-124.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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