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103151 (1999 XR217)
Classification: Main-belt Asteroid          SPK-ID: 2103151
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634988123596755 3.1185e-08  
a 2.641661724293196 1.3404e-08 au
q 2.209753169715246 8.1385e-08 au
i 4.795874352456737 3.6239e-06 deg
node 100.8964515342328 5.9842e-05 deg
peri 177.1418186745652 6.1881e-05 deg
M 155.1827931470537 1.6531e-05 deg
tp 2458524.486613379105
(2019-Feb-09.98661338)
7.0565e-05 TDB
period 1568.246158276748
4.29
1.1936e-05
3.268e-08
d
yr
n .2295557990689309 1.7472e-09 deg/d
Q 3.073570278871145 1.5596e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      11472 days (31.41 yr)  
   first obs. used      1989-09-05  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56811  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:21  

Additional Information
 Earth MOID = 1.19145 au 
 Jupiter MOID = 2.05282 au 
 T_jup = 3.371 
[ 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 15.9   n/a MPO436484  

103151 (1999 XR217)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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