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58185 Rokkosan (1991 RH1)
Classification: Main-belt Asteroid          SPK-ID: 2058185
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022369050787479 8.0124e-08  
a 2.299735686963456 5.3681e-09 au
q 1.834644259132819 1.8276e-07 au
i 5.157227651040683 5.9607e-06 deg
node 359.0066305386931 3.3824e-05 deg
peri 6.272716621786939 3.5726e-05 deg
M 130.2742662541241 7.9139e-06 deg
tp 2458739.531288152159
(2019-Sep-13.03128815)
2.7927e-05 TDB
period 1273.841266098624
3.49
4.4602e-06
1.221e-08
d
yr
n .2826097800258638 9.8952e-10 deg/d
Q 2.764827114794094 6.4538e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      10727 days (29.37 yr)  
   first obs. used      1991-08-08  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:42:38  

Additional Information
 Earth MOID = .831278 au 
 Jupiter MOID = 2.69623 au 
 T_jup = 3.559 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457092.5 (2015-Mar-11.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2034256660541105 8.0441e-08  
q 1.831167529685775 1.8371e-07 au
tp 2457465.141495557903
(2016-Mar-17.64149556)
2.7529e-05 TDB
node 359.0962553839462 3.3759e-05 deg
peri 6.046770522293613 3.5613e-05 deg
i 5.164014832056568 5.9666e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1112  
   data-arc span      10727 days (29.37 yr)  
   first obs. used      1991-08-08  
   last obs. used      2020-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:42:38  

Additional Information
 Jupiter MOID = 2.69623 au 
 T_jup = 3.559 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.470748731646219E-15 -1.47745661276167E-14 -5.362519757151522E-13 6.771613694953793E-14 -4.574592555098111E-13 -1.510825346979907E-14
q -1.47745661276167E-14 3.375024168049861E-14 1.220750063699223E-12 -1.544776275168179E-13 1.041235828795962E-12 3.466221873488245E-14
tp -5.362519757151522E-13 1.220750063699223E-12 7.578336759198421E-10 -6.273673426142304E-12 3.056261769970263E-10 1.262276985981638E-13
node 6.771613694953793E-14 -1.544776275168179E-13 -6.273673426142304E-12 1.139645087308217E-9 -1.138550149497295E-9 6.190847458279546E-11
peri -4.574592555098111E-13 1.041235828795962E-12 3.056261769970263E-10 -1.138550149497295E-9 1.268299114494228E-9 -6.123369970231695E-11
i -1.510825346979907E-14 3.466221873488245E-14 1.262276985981638E-13 6.190847458279546E-11 -6.123369970231695E-11 3.55999486421291E-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 15.6   n/a MPO502539  

58185 Rokkosan           Discovered 1991 Sept. 7 by T. Seki at Geisei.
Rokkosan is a 1000-meter-high mountain behind the city of Kobe. The summit is the birthplace of Japanese golf and commands a panoramic view of Osaka Bay and the spectacular night-time scene of Kobe City.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090806/MPCPages.arcLast Updated: 2011-05-09

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Alternate Designations
 1991 RH1 = 1998 QX55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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