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134999 (2001 HC9)
Classification: Main-belt Asteroid          SPK-ID: 2134999
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07270394467413108 4.9225e-08  
a 3.170691606733357 3.3728e-08 au
q 2.940169819578683 1.5533e-07 au
i 15.89717846655903 9.4512e-06 deg
node 49.2877409563665 2.4074e-05 deg
peri 224.6758662673538 7.7194e-05 deg
M 91.53416436048016 7.0934e-05 deg
tp 2458476.163426471975
(2018-Dec-23.66342647)
0.00040779 TDB
period 2062.193584099474
5.65
3.2905e-05
9.009e-08
d
yr
n .1745713897937501 2.7855e-09 deg/d
Q 3.40121339388803 3.618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      470  
   data-arc span      10162 days (27.82 yr)  
   first obs. used      1992-11-25  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62319  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:38:01  

Additional Information
 Earth MOID = 1.94605 au 
 Jupiter MOID = 1.67506 au 
 T_jup = 3.139 
[ 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 14.3   n/a MPO449760  
diameter diameter 8.971 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134999 (2001 HC9)          Discovered 2001-Apr-16 by LINEAR at Socorro
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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