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160318 (2003 JR8)
Classification: Main-belt Asteroid          SPK-ID: 2160318
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788718632236446 5.5531e-08  
a 3.105256838944424 2.4859e-08 au
q 2.549813762374471 1.7311e-07 au
i 20.17718284491404 6.1748e-06 deg
node 76.84421604615952 1.3358e-05 deg
peri 150.0307082273051 1.8538e-05 deg
M 47.40125452471809 1.1596e-05 deg
tp 2458737.332622674110
(2019-Sep-10.83262267)
6.4164e-05 TDB
period 1998.686675854049
5.47
2.4001e-05
6.571e-08
d
yr
n .1801182768410512 2.1629e-09 deg/d
Q 3.660699915514378 2.9306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      6776 days (18.55 yr)  
   first obs. used      2002-01-21  
   last obs. used      2020-08-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 12:28:52  

Additional Information
 Earth MOID = 1.55545 au 
 Jupiter MOID = 1.43866 au 
 T_jup = 3.102 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO302756  
rotation period rot_per 21.83 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Galad, A. (2010) Astron. Astrophys. 514, A55.]

160318 (2003 JR8)          Discovered 2003-May-02 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

[ show close-approach data ]
Alternate Designations
 2003 JR8 = 2002 DP9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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