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71048 (1999 XA87)
Classification: Main-belt Asteroid          SPK-ID: 2071048
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2096118339956474 4.476e-08  
a 2.695013891491548 1.5883e-08 au
q 2.130107087052258 1.2644e-07 au
i 12.03263021382281 4.3239e-06 deg
node 277.8160632372887 2.3423e-05 deg
peri 113.5092969210409 2.6319e-05 deg
M 278.9891027912709 1.289e-05 deg
tp 2459364.147729518181
(2021-May-29.64772952)
5.982e-05 TDB
period 1615.994725860644
4.42
1.4285e-05
3.911e-08
d
yr
n .2227730042919984 1.9693e-09 deg/d
Q 3.259920695930838 1.9212e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1107  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-10-12  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47438  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:58:01  

Additional Information
 Earth MOID = 1.16981 au 
 Jupiter MOID = 2.28805 au 
 T_jup = 3.307 
[ 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 14.1   n/a MPO474590  
diameter diameter 5.509 km 0.472 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71048 (1999 XA87)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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