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71017 (1999 XW55)
Classification: Main-belt Asteroid          SPK-ID: 2071017
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08565770393789765 4.113e-08  
a 2.769890190132835 1.4999e-08 au
q 2.53262775628595 1.1873e-07 au
i .4510721177357848 4.4524e-06 deg
node 334.9325025307958 0.00049357 deg
peri 49.4640607083394 0.00049417 deg
M 283.4799529995647 2.5202e-05 deg
tp 2459754.402706417018
(2022-Jun-23.90270642)
0.00011913 TDB
period 1683.806784768357
4.61
1.3676e-05
3.744e-08
d
yr
n .213801252766377 1.7365e-09 deg/d
Q 3.00715262397972 1.6283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      595  
   data-arc span      9797 days (26.82 yr)  
   first obs. used      1994-10-08  
   last obs. used      2021-08-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51018  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 17:50:29  

Additional Information
 Earth MOID = 1.53537 au 
 Jupiter MOID = 2.39114 au 
 T_jup = 3.332 
[ 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 15.73   n/a MPO637022  

71017 (1999 XW55)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XW55 = 1998 ME5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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