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71020 (1999 XW58)
Classification: Main-belt Asteroid          SPK-ID: 2071020
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133860632686958 6.7407e-08  
a 2.607966468763094 2.0501e-08 au
q 2.258862427228094 1.8643e-07 au
i 6.462602208906152 3.9388e-06 deg
node 253.3609002929706 4.8438e-05 deg
peri 72.8869541996539 5.2477e-05 deg
M 38.47496549622354 1.7038e-05 deg
tp 2458836.090401015806
(2019-Dec-18.59040102)
7.2374e-05 TDB
period 1538.336808648188
4.21
1.8139e-05
4.966e-08
d
yr
n .2340189729428301 2.7594e-09 deg/d
Q 2.957070510298093 2.3245e-08 au
  Orbit Determination Parameters
   # obs. used (total)      622  
   data-arc span      7118 days (19.49 yr)  
   first obs. used      1999-11-09  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56155  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:36:12  

Additional Information
 Earth MOID = 1.25725 au 
 Jupiter MOID = 2.3632 au 
 T_jup = 3.389 
[ 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 15.2   n/a MPO436279  
diameter diameter 2.684 km 0.636 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.224   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71020 (1999 XW58)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 XW58 = 2002 LX22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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