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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022369044986042 7.9902e-08  
a 2.299735685353187 5.3221e-09 au
q 1.834644259182382 1.8229e-07 au
i 5.15722787285732 5.8905e-06 deg
node 359.0066320032372 3.3058e-05 deg
peri 6.272716163672531 3.4807e-05 deg
M 130.2742658223601 7.6202e-06 deg
tp 2458739.531290164087
(2019-Sep-13.03129016)
2.6824e-05 TDB
period 1273.841264760713
3.49
4.4219e-06
1.211e-08
d
yr
n .2826097803226878 9.8104e-10 deg/d
Q 2.764827111523992 6.3984e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      10812 days (29.60 yr)  
   first obs. used      1991-08-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:28:40  

Additional Information
 Earth MOID = .831278 au 
 Jupiter MOID = 2.69623 au 
 T_jup = 3.559 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457163.5 (2015-May-21.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2034082874413202 8.0223e-08  
q 1.83132650533259 1.8326e-07 au
tp 2457465.108174433853
(2016-Mar-17.60817443)
2.6304e-05 TDB
node 359.0951050755938 3.2993e-05 deg
peri 6.029771193202821 3.4697e-05 deg
i 5.163970481890795 5.8962e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1144  
   data-arc span      10812 days (29.60 yr)  
   first obs. used      1991-08-08  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:28:40  

Additional Information
 Jupiter MOID = 2.69623 au 
 T_jup = 3.559 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.43574086081485E-15 -1.469851732794027E-14 -4.862241655481224E-13 6.960419437801769E-14 -4.367734844446293E-13 -1.485966621952257E-14
q -1.469851732794027E-14 3.358530197490963E-14 1.110011566234898E-12 -1.588599452317831E-13 9.956927573944061E-13 3.408952997545966E-14
tp -4.862241655481224E-13 1.110011566234898E-12 6.919060804726283E-10 -5.985534989224374E-12 2.753432904095264E-10 1.595247191204091E-13
node 6.960419437801769E-14 -1.588599452317831E-13 -5.985534989224374E-12 1.088559766735117E-9 -1.087617712939012E-9 5.539779202688099E-11
peri -4.367734844446293E-13 9.956927573944061E-13 2.753432904095264E-10 -1.087617712939012E-9 1.20388291773833E-9 -5.47432519709084E-11
i -1.485966621952257E-14 3.408952997545966E-14 1.595247191204091E-13 5.539779202688099E-11 -5.47432519709084E-11 3.476541984087934E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1971-Nov-08 06:03 00:01 Amphi 0.0242285469514259 0.0242273507035613 0.0242297432111231 2.5614905922041 2.56149049957384 2441263.751881165 1.23418796155864 172.657125526177 58.7664869269771 86.528062407889 61499.1624367532 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 11:28:44 2021-Apr-13 11:28

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