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312922 (2011 WL17)
Classification: Main-belt Asteroid          SPK-ID: 2312922
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0869281612193826 4.8417e-08  
a 2.553641492345189 1.9696e-08 au
q 2.331658133002101 1.2825e-07 au
i 4.050687250408684 5.9343e-06 deg
node 254.8595187400194 6.2975e-05 deg
peri 200.0913195215896 7.1082e-05 deg
M 9.47515552121563 3.1747e-05 deg
tp 2458961.269651827632
(2020-Apr-21.76965183)
0.00013144 TDB
period 1490.521745044728
4.08
1.7245e-05
4.721e-08
d
yr
n .2415261643762178 2.7943e-09 deg/d
Q 2.775624851688276 2.1408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      340  
   data-arc span      8752 days (23.96 yr)  
   first obs. used      1995-12-18  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53927  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 19:05:39  

Additional Information
 Earth MOID = 1.34888 au 
 Jupiter MOID = 2.36242 au 
 T_jup = 3.430 
[ 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 16.5   n/a MPO455307  

312922 (2011 WL17)          Discovered 1995-Dec-18 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2011 WL17 = 2002 QS103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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