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120155 (2003 HS8)
Classification: Main-belt Asteroid          SPK-ID: 2120155
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140208965711661 5.1906e-08  
a 3.097053540012434 2.8919e-08 au
q 2.743924718651312 1.665e-07 au
i 1.621464967488239 4.1955e-06 deg
node 111.5771714709133 0.00022849 deg
peri 138.1657072988301 0.00022984 deg
M 52.85892133926416 2.6707e-05 deg
tp 2458908.194294463342
(2020-Feb-28.69429446)
0.00014625 TDB
period 1990.771875910962
5.45
2.7884e-05
7.634e-08
d
yr
n .1808343810539652 2.5329e-09 deg/d
Q 3.450182361373555 3.2217e-08 au
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      6343 days (17.37 yr)  
   first obs. used      2002-01-14  
   last obs. used      2019-05-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56526  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:05:10  

Additional Information
 Earth MOID = 1.72856 au 
 Jupiter MOID = 1.57601 au 
 T_jup = 3.212 
[ 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 15.65   n/a MPCxxxxx  
diameter diameter 5.710 km 0.555 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.041   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120155 (2003 HS8)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Alternate Designations
 2003 HS8 = 2002 CO287 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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