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58181 (1991 CG1)
Classification: Main-belt Asteroid          SPK-ID: 2058181
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1962730651597796 2.7386e-08  
a 2.554729264929754 9.5342e-09 au
q 2.0533047214486 6.7963e-08 au
i 4.614657753679506 4.0558e-06 deg
node 346.6137531913672 5.8064e-05 deg
peri 133.9981457884382 5.9848e-05 deg
M 75.87971423181766 1.5362e-05 deg
tp 2458686.131562026855
(2019-Jul-21.63156203)
6.3182e-05 TDB
period 1491.474220956896
4.08
8.3492e-06
2.286e-08
d
yr
n .2413719224520235 1.3512e-09 deg/d
Q 3.056153808410907 1.1406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1834  
   data-arc span      10769 days (29.48 yr)  
   first obs. used      1991-01-17  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48909  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:52:02  

Additional Information
 Earth MOID = 1.07224 au 
 Jupiter MOID = 2.03125 au 
 T_jup = 3.406 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457242.5 (2015-Aug-08.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1968807882141212 2.7358e-08  
q 2.052298363462407 6.7946e-08 au
tp 2457195.678767036117
(2015-Jun-22.17876704)
6.1425e-05 TDB
node 346.6302306867307 5.8038e-05 deg
peri 134.2903161977541 5.9809e-05 deg
i 4.616062101633575 4.0551e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1834  
   data-arc span      10769 days (29.48 yr)  
   first obs. used      1991-01-17  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48909  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:52:02  

Additional Information
 Jupiter MOID = 2.03125 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.484404515074952E-16 -1.848222039044447E-15 -2.703920226195821E-13 -1.920184864315281E-15 -7.658704496695921E-14 -2.178370902795477E-16
q -1.848222039044447E-15 4.616639638375784E-15 7.339289991561617E-13 2.711535172045671E-15 2.073862834255672E-13 4.898236215440277E-16
tp -2.703920226195821E-13 7.339289991561617E-13 3.772997943488514E-9 2.962038869318676E-11 9.18340959585963E-10 1.477218271546406E-12
node -1.920184864315281E-15 2.711535172045671E-15 2.962038869318676E-11 3.368397410645335E-9 -3.349986072265097E-9 1.228826440538216E-10
peri -7.658704496695921E-14 2.073862834255672E-13 9.18340959585963E-10 -3.349986072265097E-9 3.577068449103284E-9 -1.221398654344511E-10
i -2.178370902795477E-16 4.898236215440277E-16 1.477218271546406E-12 1.228826440538216E-10 -1.221398654344511E-10 1.644404019310104E-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 14.41   n/a E2021B10  

58181 (1991 CG1)          Discovered 1991-Feb-07 by Endate, K., Watanabe, K. at Kitami
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 CG1 = 1998 WO31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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