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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788719363661792 7.0878e-08  
a 3.105256816123821 3.2137e-08 au
q 2.549813516509477 2.283e-07 au
i 20.1771940449835 7.3563e-06 deg
node 76.84420424748443 1.5121e-05 deg
peri 150.0307196523719 2.0012e-05 deg
M 47.40125787098574 1.1999e-05 deg
tp 2458737.332606996976
(2019-Sep-10.83260700)
6.5994e-05 TDB
period 1998.686653821459
5.47
3.1027e-05
8.495e-08
d
yr
n .1801182788265912 2.7961e-09 deg/d
Q 3.660700115738166 3.7886e-08 au
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      6316 days (17.29 yr)  
   first obs. used      2002-01-21  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56201  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:33:06  

Additional Information
 Earth MOID = 1.55545 au 
 Jupiter MOID = 1.43866 au 
 T_jup = 3.102 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456237.5 (2012-Nov-06.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1763266812977539 7.1228e-08  
q 2.556066023827464 2.2753e-07 au
tp 2456738.783881757739
(2014-Mar-22.28388176)
7.0069e-05 TDB
node 76.87613383155927 1.5114e-05 deg
peri 149.7125763543236 2.0152e-05 deg
i 20.18196356701358 7.3599e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      502  
   data-arc span      6316 days (17.29 yr)  
   first obs. used      2002-01-21  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56201  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:33:06  

Additional Information
 Jupiter MOID = 1.43866 au 
 T_jup = 3.102 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.073487636872059E-15 -1.610697116635936E-14 6.188747484877394E-13 9.767046347103109E-15 5.825870622426182E-14 -2.911839575769234E-15
q -1.610697116635936E-14 5.177120427209751E-14 -2.500063923302243E-12 -2.773382901828932E-14 -3.104792125500908E-13 1.67943648621518E-14
tp 6.188747484877394E-13 -2.500063923302243E-12 4.909705701129713E-9 -1.939703316401277E-12 9.631515257430386E-10 -5.271191959303261E-13
node 9.767046347103109E-15 -2.773382901828932E-14 -1.939703316401277E-12 2.284247601574469E-10 -2.145303354796469E-10 -4.656683098252186E-11
peri 5.825870622426182E-14 -3.104792125500908E-13 9.631515257430386E-10 -2.145303354796469E-10 4.060841879539969E-10 4.390873399641256E-11
i -2.911839575769234E-15 1.67943648621518E-14 -5.271191959303261E-13 -4.656683098252186E-11 4.390873399641256E-11 5.416753017183028E-11

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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