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71197 (1999 XE234)
Classification: Main-belt Asteroid          SPK-ID: 2071197
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09343965615345244 4.7702e-08  
a 2.750553278991214 1.6321e-08 au
q 2.493542526370524 1.3232e-07 au
i 7.21520558429367 5.7186e-06 deg
node 170.1506689790043 3.7379e-05 deg
peri 251.4811978960062 4.6534e-05 deg
M 177.6748677944787 2.8352e-05 deg
tp 2458178.158856058766
(2018-Feb-28.65885606)
0.00012923 TDB
period 1666.205330521393
4.56
1.483e-05
4.06e-08
d
yr
n .2160598057187513 1.923e-09 deg/d
Q 3.007564031611904 1.7845e-08 au
  Orbit Determination Parameters
   # obs. used (total)      680  
   data-arc span      9262 days (25.36 yr)  
   first obs. used      1995-02-01  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57261  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:38:45  

Additional Information
 Earth MOID = 1.51728 au 
 Jupiter MOID = 2.28204 au 
 T_jup = 3.328 
[ 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 15.3   n/a MPO280201  
diameter diameter 5.078 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71197 (1999 XE234)          Discovered 1999-Dec-04 by LONEOS at Anderson Mesa
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XE234 = 2001 FE154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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