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160921 (2001 XH115)
Classification: Main-belt Asteroid          SPK-ID: 2160921
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1006722556468719 5.224e-08  
a 2.198569219758924 9.3697e-09 au
q 1.97723429721001 1.1882e-07 au
i 6.744095996402112 3.7929e-06 deg
node 311.1621376137797 3.8495e-05 deg
peri 53.29115306339171 4.2837e-05 deg
M 318.8277008105392 1.651e-05 deg
tp 2459136.679351403122
(2020-Oct-14.17935140)
5.4323e-05 TDB
period 1190.717241209424
3.26
7.6118e-06
2.084e-08
d
yr
n .302338781652598 1.9327e-09 deg/d
Q 2.419904142307839 1.0313e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      8007 days (21.92 yr)  
   first obs. used      1998-12-15  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 23:17:41  

Additional Information
 Earth MOID = .982049 au 
 Jupiter MOID = 2.98637 au 
 T_jup = 3.651 
[ 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 16.1   n/a MPO436811  
diameter diameter 1.811 km 0.505 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.258   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

160921 (2001 XH115)          Discovered 2001-Dec-13 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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