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71143 (1999 XR181)
Classification: Main-belt Asteroid          SPK-ID: 2071143
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2105319869943257 5.0281e-08  
a 2.59912870288998 1.52e-08 au
q 2.051928972616568 1.3573e-07 au
i 14.49016721952371 4.9848e-06 deg
node 33.92838967315011 1.9837e-05 deg
peri 283.4254476272706 2.2327e-05 deg
M 312.3785643883622 1.2219e-05 deg
tp 2458802.960398674934
(2019-Nov-15.46039867)
5.2789e-05 TDB
period 1530.523861510053
4.19
1.3426e-05
3.676e-08
d
yr
n .2352135821292031 2.0633e-09 deg/d
Q 3.146328433163392 1.84e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1361  
   data-arc span      7251 days (19.85 yr)  
   first obs. used      1999-10-05  
   last obs. used      2019-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50473  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 02:39:43  

Additional Information
 Earth MOID = 1.09587 au 
 Jupiter MOID = 2.37007 au 
 T_jup = 3.340 
[ 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 13.6   n/a MPO337798  
diameter diameter 5.037 km 0.221 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.304   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71143 (1999 XR181)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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