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168289 (2007 SD)
Classification: Main-belt Asteroid          SPK-ID: 2168289
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.


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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 .2316175308198864 3.8042e-08  
a 2.361376872242478 9.8776e-09 au
q 1.814440591758489 8.8841e-08 au
i 1.924557661099388 4.6158e-06 deg
node 351.1414425478376 0.00012657 deg
peri 343.4540001723691 0.0001269 deg
M 198.4060438221144 1.0241e-05 deg
tp 2459595.434285627282
(2022-Jan-15.93428563)
3.9521e-05 TDB
period 1325.398225847336
3.63
8.3162e-06
2.277e-08
d
yr
n .2716164794696701 1.7042e-09 deg/d
Q 2.908313152726468 1.2165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      475  
   data-arc span      8576 days (23.48 yr)  
   first obs. used      1996-08-09  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53409  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 15:26:49  

Additional Information
 Earth MOID = .804658 au 
 Jupiter MOID = 2.47049 au 
 T_jup = 3.513 
[ 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 16.7   n/a MPO469793  

168289 (2007 SD)          Discovered 2007-Sep-17 by Lowe, A. at Mayhill
Reference: 20071026/Numbers.arcLast Updated: 2007-10-28

Alternate Designations
 2007 SD = 2000 WE161 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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