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

[ hide orbit diagram ]

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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1205066712140537 9.1329e-08  
a 5.249955684174931 2.2034e-07 au
q 4.61730100065371 6.389e-07 au
i 19.19991028994399 1.0871e-05 deg
node 323.8753881446101 1.7811e-05 deg
peri 78.42416871550964 4.7123e-05 deg
M 323.3473942087172 4.377e-05 deg
tp 2459647.836399846321
(2022-Mar-09.33639985)
0.00054265 TDB
period 4393.715002467205
12.03
0.00027661
7.573e-07
d
yr
n .08193521878361457 5.1583e-09 deg/d
Q 5.882610367696151 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47598  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 09:30:13  

Additional Information
 Earth MOID = 3.68936 au 
 Jupiter MOID = .0348119 au 
 T_jup = 2.874 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457890.5 (2017-May-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189849881504741 9.1593e-08  
q 4.632450388068817 6.3865e-07 au
tp 2459644.061536980828
(2022-Mar-05.56153698)
0.00054872 TDB
node 323.9145346104971 1.7821e-05 deg
peri 77.67884142192266 4.7714e-05 deg
i 19.17690045886143 1.0865e-05 deg
  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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47598  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 09:30:13  

Additional Information
 Jupiter MOID = .0348119 au 
 T_jup = 2.874 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.389210015767404E-15 -5.728344924711135E-14 -2.600422428708242E-11 1.391759059071953E-14 -1.344416449246082E-12 -2.122153593523419E-14
q -5.728344924711135E-14 4.078788409001475E-13 1.676208376987084E-10 -9.245769543673194E-14 7.544950152958656E-12 1.559850838073955E-13
tp -2.600422428708242E-11 1.676208376987084E-10 3.0109706051041E-7 -5.315126335874549E-11 2.363200764224862E-8 1.32453306936278E-10
node 1.391759059071953E-14 -9.245769543673194E-14 -5.315126335874549E-11 3.175952571533086E-10 -3.030254236643092E-10 5.573694650428024E-11
peri -1.344416449246082E-12 7.544950152958656E-12 2.363200764224862E-8 -3.030254236643092E-10 2.276628787365033E-9 -4.40305795300367E-11
i -2.122153593523419E-14 1.559850838073955E-13 1.32453306936278E-10 5.573694650428024E-11 -4.40305795300367E-11 1.180464486012592E-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 13.56   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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