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393804 (2005 QH71)
Classification: Mars-crossing Asteroid          SPK-ID: 2393804
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3153723120266875 4.9794e-08  
a 2.20782567886849 6.8888e-09 au
q 1.511538589971843 1.1258e-07 au
i 3.989737409819063 4.3649e-06 deg
node 178.9995227380442 5.9668e-05 deg
peri 160.5489265938326 6.0366e-05 deg
M 247.8997167597954 7.9302e-06 deg
tp 2459573.621097677094
(2021-Dec-25.12109768)
2.7196e-05 TDB
period 1198.244922146449
3.28
5.6081e-06
1.535e-08
d
yr
n .3004394121321393 1.4061e-09 deg/d
Q 2.904112767765137 9.0614e-09 au
  Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      5345 days (14.63 yr)  
   first obs. used      2005-08-03  
   last obs. used      2020-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51001  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:35:28  

Additional Information
 Earth MOID = .501958 au 
 Jupiter MOID = 2.50875 au 
 T_jup = 3.590 
[ 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 17.57   n/a E2021B25  

393804 (2005 QH71)          Discovered 2005-Aug-03 by LINEAR at Socorro
Reference: Last Updated: 2014-05-15
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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