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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .12046249372815 9.1587e-08  
a 5.251966089333542 2.2082e-07 au
q 4.619301157236744 6.4031e-07 au
i 19.19778237888948 1.089e-05 deg
node 323.8727515332993 1.7833e-05 deg
peri 78.17176867796005 4.7109e-05 deg
M 307.1796159221811 4.3485e-05 deg
tp 2459645.530648961795
(2022-Mar-07.03064896)
0.0005427 TDB
period 4396.239021740844
12.04
0.00027727
7.591e-07
d
yr
n .08188817719411569 5.1646e-09 deg/d
Q 5.88463102143034 2.4742e-07 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      7183 days (19.67 yr)  
   first obs. used      2001-02-13  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47787  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:20:39  

Additional Information
 Earth MOID = 3.69206 au 
 Jupiter MOID = .0337826 au 
 T_jup = 2.875 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457881.5 (2017-May-08.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189769441015426 9.1612e-08  
q 4.632489990466473 6.3895e-07 au
tp 2459644.152214569449
(2022-Mar-05.65221457)
0.00054986 TDB
node 323.9148710343089 1.7842e-05 deg
peri 77.68427523539276 4.777e-05 deg
i 19.17686699623688 1.0885e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      7183 days (19.67 yr)  
   first obs. used      2001-02-13  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47787  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:20:39  

Additional Information
 Jupiter MOID = .0337826 au 
 T_jup = 2.875 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.392833271993102E-15 -5.73211285585617E-14 -2.60751248181427E-11 1.351634096096161E-14 -1.348335455485977E-12 -2.089003736803805E-14
q -5.73211285585617E-14 4.082566874333775E-13 1.683003461640625E-10 -8.971406017624822E-14 7.583542463017423E-12 1.536730371754226E-13
tp -2.60751248181427E-11 1.683003461640625E-10 3.023479410324046E-7 -5.091982926252217E-11 2.370846318942633E-8 1.31161299339223E-10
node 1.351634096096161E-14 -8.971406017624822E-14 -5.091982926252217E-11 3.183538453787237E-10 -3.035950164235854E-10 5.515154629894992E-11
peri -1.348335455485977E-12 7.583542463017423E-12 2.370846318942633E-8 -3.035950164235854E-10 2.282019865458213E-9 -4.355633674249837E-11
i -2.089003736803805E-14 1.536730371754226E-13 1.31161299339223E-10 5.515154629894992E-11 -4.355633674249837E-11 1.184925707260287E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO434270  

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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