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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08527771470386836 4.8191e-08  
q 2.335681067908596 1.2745e-07 au
tp 2457470.907831684293
(2016-Mar-23.40783168)
0.0001355 TDB
node 254.9451604731728 6.3107e-05 deg
peri 200.0745289207024 7.1539e-05 deg
i 4.045840427702538 5.929e-06 deg
  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
 Jupiter MOID = 2.36242 au 
 T_jup = 3.430 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.322353225794985E-15 -6.082592192257045E-15 -2.849538620548908E-12 -2.127019443030587E-14 -6.595062253495433E-13 1.98939174038028E-15
q -6.082592192257045E-15 1.62445198155822E-14 6.968514833087769E-12 5.75988288839298E-14 1.598496576505638E-12 -4.829211870361058E-15
tp -2.849538620548908E-12 6.968514833087769E-12 1.836152685352151E-8 9.282645876074418E-12 4.582648542291514E-9 -4.860312895753798E-12
node -2.127019443030587E-14 5.75988288839298E-14 9.282645876074418E-12 3.982430857688452E-9 -3.96996432815055E-9 -1.326364330555131E-10
peri -6.595062253495433E-13 1.598496576505638E-12 4.582648542291514E-9 -3.96996432815055E-9 5.117872504921676E-9 1.311051185248621E-10
i 1.98939174038028E-15 -4.829211870361058E-15 -4.860312895753798E-12 -1.326364330555131E-10 1.311051185248621E-10 3.515283753671709E-11

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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