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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07232467758064486 4.8788e-08  
a 3.1720318590936 2.666e-08 au
q 2.942615677609122 1.5091e-07 au
i 15.89360882686438 8.9527e-06 deg
node 49.2879252087285 1.6815e-05 deg
peri 224.8879997812468 6.4043e-05 deg
M 160.4447335471257 6.2814e-05 deg
tp 2458476.839140640617
(2018-Dec-24.33914064)
0.00035795 TDB
period 2063.501257098813
5.65
2.6015e-05
7.123e-08
d
yr
n .1744607611754709 2.1994e-09 deg/d
Q 3.401448040578078 2.8588e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10295 days (28.19 yr)  
   first obs. used      1992-11-25  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57984  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 11:09:21  

Additional Information
 Earth MOID = 1.9487 au 
 Jupiter MOID = 1.67278 au 
 T_jup = 3.138 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457715.5 (2016-Nov-23.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07502183734611809 4.7032e-08  
q 2.932625095553772 1.4539e-07 au
tp 2458484.474361343151
(2018-Dec-31.97436134)
0.00035153 TDB
node 49.32619107934192 1.6817e-05 deg
peri 226.4065363111187 6.3132e-05 deg
i 15.89854827840351 8.9607e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10295 days (28.19 yr)  
   first obs. used      1992-11-25  
   last obs. used      2021-02-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57984  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 11:09:21  

Additional Information
 Jupiter MOID = 1.67278 au 
 T_jup = 3.138 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.212004639972764E-15 -6.745937462335333E-15 -7.860497093311694E-12 1.110960951489284E-15 -1.452563521343464E-12 4.870688208221137E-16
q -6.745937462335333E-15 2.113923829098241E-14 2.620613077598307E-11 -6.941193636566274E-15 4.773548435123111E-12 1.667283066035721E-15
tp -7.860497093311694E-12 2.620613077598307E-11 1.235707687906643E-7 -5.071966353770553E-11 2.139654096719356E-8 3.041971851418408E-11
node 1.110960951489284E-15 -6.941193636566274E-15 -5.071966353770553E-11 2.828026542060212E-10 -2.800823106365023E-10 -7.850784526109054E-11
peri -1.452563521343464E-12 4.773548435123111E-12 2.139654096719356E-8 -2.800823106365023E-10 3.985696867563117E-9 8.027825472657482E-11
i 4.870688208221137E-16 1.667283066035721E-15 3.041971851418408E-11 -7.850784526109054E-11 8.027825472657482E-11 8.029470948285024E-11

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 14.39   n/a MPCxxxxx  
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

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