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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .113291008497729 5.33e-08  
a 3.096051861509316 2.8334e-08 au
q 2.745297023757654 1.6806e-07 au
i 1.621063835949444 4.3169e-06 deg
node 111.5764173961692 0.00023326 deg
peri 138.4125561503217 0.00023458 deg
M 16.52723838539291 2.6616e-05 deg
tp 2458909.149998730344
(2020-Feb-29.64999873)		 0.00014673 TDB
period 1989.806142455205
5.45		 2.7315e-05
7.478e-08		 d
yr
n .1809221472981278 2.4836e-09 deg/d
Q 3.446806699260978 3.1544e-08 au
   Orbit Determination Parameters
   # obs. used (total)      495  
   data-arc span      6310 days (17.28 yr)  
   first obs. used      2002-01-14  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56638  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 11:52:37  

Additional Information
 Earth MOID = 1.73146 au 
 Jupiter MOID = 1.58089 au 
 T_jup = 3.213 
[ 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 15.5   n/a MPO432703  
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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