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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1140208898545666 5.254e-08  
a 3.097053504421987 2.9372e-08 au
q 2.743924707920588 1.6777e-07 au
i 1.621465076115455 4.2466e-06 deg
node 111.5771648347211 0.00023258 deg
peri 138.165711425232 0.0002339 deg
M 52.85892461197048 2.6712e-05 deg
tp 2458908.194281404171
(2020-Feb-28.69428140)
0.00014627 TDB
period 1990.771841594897
5.45
2.8321e-05
7.754e-08
d
yr
n .1808343841711101 2.5725e-09 deg/d
Q 3.450182300923386 3.2722e-08 au
  Orbit Determination Parameters
   # obs. used (total)      499  
   data-arc span      6343 days (17.37 yr)  
   first obs. used      2002-01-14  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56655  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:59:08  

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 15.5   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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