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118379 (1999 HC12)
Classification: TransNeptunian Object          SPK-ID: 2118379
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2315370301779889 0.00083026  
a 45.4604885574154 0.038318 au
q 34.93470204639099 0.028599 au
i 15.33374888600232 0.0014362 deg
node 57.02704455941532 0.0015474 deg
peri 96.40407850923324 0.14204 deg
M 68.6108515271341 0.1433 deg
tp 2437863.179357010089
(1962-Jul-17.67935701)
19.837 TDB
period 111956.5675181648
306.52
141.55
0.3875
d
yr
n .003215532665750855 4.0655e-06 deg/d
Q 55.9862750684398 0.047191 au
  Orbit Determination Parameters
   # obs. used (total)      15  
   data-arc span      2188 days (5.99 yr)  
   first obs. used      1999-04-18  
   last obs. used      2005-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .25205  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-11 11:31:32  

Additional Information
 Earth MOID = 33.9808 au 
 Jupiter MOID = 29.7205 au 
 T_jup = 5.661 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.6   n/a MPO87914  

118379 (1999 HC12)          Discovered 1999-Apr-18 by Kitt Peak at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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