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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204461022585105 9.1208e-08  
a 5.248398109253729 2.1955e-07 au
q 4.616249013893181 6.378e-07 au
i 19.20025966494028 1.0872e-05 deg
node 323.87622324 1.7813e-05 deg
peri 78.63106873421304 4.7251e-05 deg
M 339.2379927084137 4.4229e-05 deg
tp 2459649.782638032212
(2022-Mar-11.28263803)		 0.0005445 TDB
period 4391.759833768446
12.02		 0.00027557
7.545e-07		 d
yr
n .0819716955449028 5.1434e-09 deg/d
Q 5.880547204614277 2.4599e-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-Jul-09 12:01:39  

Additional Information
 Earth MOID = 3.68891 au 
 Jupiter MOID = .0356911 au 
 T_jup = 2.875 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457891.5 (2017-May-18.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1189859595647095 9.1593e-08  
q 4.632445229966084 6.3866e-07 au
tp 2459644.051583118990
(2022-Mar-05.55158312)		 0.00054872 TDB
node 323.91449546405 1.7821e-05 deg
peri 77.67826501298752 4.7713e-05 deg
i 19.17690441902634 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-Jul-09 12:01:39  

Additional Information
 Jupiter MOID = .0356911 au 
 T_jup = 2.875 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.389338035219112E-15 -5.728423747750588E-14 -2.600467446151607E-11 1.391413901733664E-14 -1.344449101535339E-12 -2.122519190827417E-14
q -5.728423747750588E-14 4.078836665402016E-13 1.676241716058826E-10 -9.242924160239757E-14 7.545208036939874E-12 1.560209935566055E-13
tp -2.600467446151607E-11 1.676241716058826E-10 3.010912617006957E-7 -5.313190709242144E-11 2.36314609497591E-8 1.324489016213584E-10
node 1.391413901733664E-14 -9.242924160239757E-14 -5.313190709242144E-11 3.175956561333884E-10 -3.030246199349355E-10 5.573726454807397E-11
peri -1.344449101535339E-12 7.545208036939874E-12 2.36314609497591E-8 -3.030246199349355E-10 2.2765771278358E-9 -4.403206146675597E-11
i -2.122519190827417E-14 1.560209935566055E-13 1.324489016213584E-10 5.573726454807397E-11 -4.403206146675597E-11 1.180463897598254E-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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