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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .21008254173352 5.0281e-08  
a 2.597951558369128 1.4947e-08 au
q 2.052167291686383 1.3559e-07 au
i 14.48803040943256 4.9594e-06 deg
node 33.90958169203081 1.9771e-05 deg
peri 283.4475795246479 2.2263e-05 deg
M 46.48865617196208 1.2466e-05 deg
tp 2458802.989816777147
(2019-Nov-15.48981678)
5.2136e-05 TDB
period 1529.484218627736
4.19
1.3199e-05
3.614e-08
d
yr
n .2353734648684341 2.0312e-09 deg/d
Q 3.143735825051874 1.8087e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1713  
   data-arc span      7309 days (20.01 yr)  
   first obs. used      1999-10-05  
   last obs. used      2019-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45918  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 11:24:57  

Additional Information
 Earth MOID = 1.09685 au 
 Jupiter MOID = 2.37411 au 
 T_jup = 3.341 
[ 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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