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85751 (1998 SU144)
Classification: Main-belt Asteroid          SPK-ID: 2085751
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1556991824883868 4.2359e-08  
a 2.337619267751799 1.0165e-08 au
q 1.973653858793742 9.9238e-08 au
i 3.678486288070168 4.7079e-06 deg
node 30.64137286192032 7.0424e-05 deg
peri 329.4542727444245 7.1871e-05 deg
M 36.91314920013576 1.6355e-05 deg
tp 2458866.644046640495
(2020-Jan-18.14404664)
5.8896e-05 TDB
period 1305.446548278917
3.57
8.5146e-06
2.331e-08
d
yr
n .2757677060578383 1.7987e-09 deg/d
Q 2.701584676709855 1.1747e-08 au
  Orbit Determination Parameters
   # obs. used (total)      521  
   data-arc span      10101 days (27.66 yr)  
   first obs. used      1993-03-20  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56376  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:14:30  

Additional Information
 Earth MOID = .971584 au 
 Jupiter MOID = 2.74663 au 
 T_jup = 3.547 
[ 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 16.1   n/a MPO436374  

85751 (1998 SU144)          Discovered 1998-Sep-20 by Elst, E. W. at La Silla
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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