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359974 (2012 HS2)
Classification: Jupiter Trojan          SPK-ID: 2359974
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205066713844525 9.1329e-08  
a 5.249955685124863 2.2034e-07 au
q 4.617301000594583 6.389e-07 au
i 19.19991028601654 1.0871e-05 deg
node 323.8753881465287 1.7811e-05 deg
peri 78.42416864472793 4.7123e-05 deg
M 323.3473942922208 4.377e-05 deg
tp 2459647.836398948592
(2022-Mar-09.33639895)
0.00054265 TDB
period 4393.71500365971
12.03
0.00027661
7.573e-07
d
yr
n .0819352187613764 5.1583e-09 deg/d
Q 5.882610369655144 2.4689e-07 au
  Orbit Determination Parameters
   # obs. used (total)      168  
   data-arc span      7237 days (19.81 yr)  
   first obs. used      2001-02-13  
   last obs. used      2020-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47598  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 16:20:31  

Additional Information
 Earth MOID = 3.68936 au 
 Jupiter MOID = .0348119 au 
 T_jup = 2.874 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.56   n/a E2021B25  

359974 (2012 HS2)          Discovered 2011-Dec-28 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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