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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1791461203095751 5.4821e-08  
a 3.103130906631424 2.5104e-08 au
q 2.54721704389567 1.7127e-07 au
i 20.16763819977957 6.127e-06 deg
node 76.80452732936519 1.3366e-05 deg
peri 149.8016540095321 1.8555e-05 deg
M 83.66025457205075 1.1613e-05 deg
tp 2458736.502913978785
(2019-Sep-10.00291398)
6.3913e-05 TDB
period 1996.634504904339
5.47
2.4229e-05
6.634e-08
d
yr
n .1803034051128191 2.188e-09 deg/d
Q 3.659044769367177 2.9601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      590  
   data-arc span      6776 days (18.55 yr)  
   first obs. used      2002-01-21  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55556  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:00:52  

Additional Information
 Earth MOID = 1.55181 au 
 Jupiter MOID = 1.43978 au 
 T_jup = 3.103 
[ 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 14.88   n/a E2021B55  
rotation period rot_per 21.83 h n/a LCDB (Rev. 2020-October); 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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