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281727 (2008 XE1)
Classification: Main-belt Asteroid          SPK-ID: 2281727
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554460638484517 7.8839e-08  
a 2.714274938658929 4.1686e-08 au
q 2.292351583241901 2.1951e-07 au
i 14.79366827219727 8.5301e-06 deg
node 104.8023372834152 2.79e-05 deg
peri 250.7209225596955 3.9222e-05 deg
M 270.9201144219642 2.8043e-05 deg
tp 2459404.662794587908
(2021-Jul-09.16279459)
0.00012911 TDB
period 1633.349718710486
4.47
3.7628e-05
1.03e-07
d
yr
n .2204059521828654 5.0775e-09 deg/d
Q 3.136198294075958 4.8166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      173  
   data-arc span      6581 days (18.02 yr)  
   first obs. used      2002-04-20  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63239  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 16:54:25  

Additional Information
 Earth MOID = 1.33398 au 
 Jupiter MOID = 2.3678 au 
 T_jup = 3.297 
[ 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 15.8   n/a MPO433821  

281727 (2008 XE1)          Discovered 2008-Dec-02 by Lowe, A. at Mayhill
Reference: 20110615/Numbers.arcLast Updated: 2011-06-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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