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399905 (2005 XA1)
Classification: Mars-crossing Asteroid          SPK-ID: 2399905
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3843470309173629 1.4121e-07  
a 2.125127971584909 5.0224e-08 au
q 1.308341345386811 3.28e-07 au
i 6.502309939715578 6.1361e-06 deg
node 148.2390359166501 7.5664e-05 deg
peri 211.970326562548 8.1143e-05 deg
M 277.1498645365232 6.2921e-05 deg
tp 2459260.915470276790
(2021-Feb-15.41547028)
0.00020688 TDB
period 1131.556017080655
3.10
4.0114e-05
1.098e-07
d
yr
n .3181459817860171 1.1278e-08 deg/d
Q 2.941914597783006 6.9527e-08 au
  Orbit Determination Parameters
   # obs. used (total)      132  
   data-arc span      5288 days (14.48 yr)  
   first obs. used      2005-11-04  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51258  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:38:02  

Additional Information
 Earth MOID = .311035 au 
 Jupiter MOID = 2.51611 au 
 T_jup = 3.621 
[ 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 18.4   n/a MPO303279  

399905 (2005 XA1)          Discovered 2005-Dec-04 by Lowe, A. at Mayhill
Reference: Last Updated: 2014-07-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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