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101317 (1998 SD149)
Classification: Main-belt Asteroid          SPK-ID: 2101317
[ 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .207113976067173 1.0325e-07  
a 2.466658382618132 2.0618e-08 au
q 1.955778957394668 2.454e-07 au
i 3.151568754919344 4.8274e-06 deg
node 86.97114802432525 0.00011436 deg
peri 272.072147814611 0.00011831 deg
M 214.6841146182337 4.4762e-05 deg
tp 2459571.679389781513
(2021-Dec-23.17938978)		 0.00018234 TDB
period 1415.017909302474
3.87		 1.7742e-05
4.857e-08		 d
yr
n .2544137410794046 3.1899e-09 deg/d
Q 2.977537807841595 2.4889e-08 au
   Orbit Determination Parameters
   # obs. used (total)      418  
   data-arc span      10343 days (28.32 yr)  
   first obs. used      1992-01-30  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58255  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:01:14  

Additional Information
 Earth MOID = .955324 au 
 Jupiter MOID = 2.47595 au 
 T_jup = 3.455 
[ 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 MPO469020  

101317 (1998 SD149)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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