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308631 (2005 XX78)
Classification: Main-belt Asteroid          SPK-ID: 2308631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2702688178643411 4.6877e-07  
a 2.537832503277225 3.9075e-08 au
q 1.851935512678788 1.2154e-06 au
i 7.991164137173799 1.0936e-05 deg
node 347.5145401464162 5.8073e-05 deg
peri 31.3776601300111 6.8737e-05 deg
M 236.3318166073764 2.0293e-05 deg
tp 2459507.780701076565
(2021-Oct-20.28070108)
9.3433e-05 TDB
period 1476.7019889649
4.04
3.4105e-05
9.337e-08
d
yr
n .2437864936122578 5.6304e-09 deg/d
Q 3.223729493875662 4.9636e-08 au
  Orbit Determination Parameters
   # obs. used (total)      382  
   data-arc span      6350 days (17.39 yr)  
   first obs. used      2001-10-16  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51354  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:18:58  

Additional Information
 Earth MOID = .858633 au 
 Jupiter MOID = 2.27128 au 
 T_jup = 3.382 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO268339  

308631 (2005 XX78)          Discovered 2005-Dec-04 by CSS at Catalina
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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