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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457283.5 (2015-Sep-18.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3163166038124328 4.9926e-08  
q 1.509405068848896 1.1291e-07 au
tp 2457175.983855831787
(2015-Jun-02.48385583)
2.3384e-05 TDB
node 179.034938834201 5.9669e-05 deg
peri 160.4133071175655 6.035e-05 deg
i 3.988899281571787 4.3679e-06 deg
  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
 Jupiter MOID = 2.50875 au 
 T_jup = 3.590 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.492612425249902E-15 -5.633715173385321E-15 -4.807189209795217E-13 -1.049829015857346E-13 -2.064720136251872E-13 -9.518981298049174E-15
q -5.633715173385321E-15 1.274842967812573E-14 1.071031268382298E-12 2.367687569429704E-13 4.611983862164495E-13 2.158576505522523E-14
tp -4.807189209795217E-13 1.071031268382298E-12 5.468275679445906E-10 4.152334316894391E-11 2.29705635926369E-10 8.65755908414274E-13
node -1.049829015857346E-13 2.367687569429704E-13 4.152334316894391E-11 3.560357803229122E-9 -3.527580101669735E-9 -2.743743816767986E-11
peri -2.064720136251872E-13 4.611983862164495E-13 2.29705635926369E-10 -3.527580101669735E-9 3.642071976189184E-9 2.820056928485778E-11
i -9.518981298049174E-15 2.158576505522523E-14 8.65755908414274E-13 -2.743743816767986E-11 2.820056928485778E-11 1.907871393649537E-11

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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