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201758 (2003 WC26)
Classification: Main-belt Asteroid          SPK-ID: 2201758
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05306241570073578 5.0086e-08  
a 2.726329743808764 2.6597e-08 au
q 2.581664101605503 1.4488e-07 au
i 3.551571663574031 5.6015e-06 deg
node 86.58952772515659 0.00010365 deg
peri 189.0019896188709 0.0001236 deg
M 356.1753115174791 6.8894e-05 deg
tp 2459017.968658978019
(2020-Jun-17.46865898)
0.00031467 TDB
period 1644.242991508152
4.50
2.4061e-05
6.588e-08
d
yr
n .218945740902807 3.204e-09 deg/d
Q 2.870995386012025 2.8009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1997-04-08  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55833  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:01:59  

Additional Information
 Earth MOID = 1.56536 au 
 Jupiter MOID = 2.1775 au 
 T_jup = 3.351 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456953.5 (2014-Oct-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05133032958607005 5.014e-08  
q 2.584905089500642 1.4461e-07 au
tp 2457375.323024456567
(2015-Dec-18.82302446)
0.0003239 TDB
node 86.59931864019451 0.00010365 deg
peri 189.0735393768275 0.00012481 deg
i 3.552021137133237 5.6028e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      321  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1997-04-08  
   last obs. used      2019-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55833  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 18:01:59  

Additional Information
 Jupiter MOID = 2.1775 au 
 T_jup = 3.351 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.514024949047927E-15 -7.143914718867681E-15 -4.115130774758035E-12 -1.051292430094842E-14 -8.181513420807131E-13 -3.303525378585523E-16
q -7.143914718867681E-15 2.091073504449453E-14 1.108540727103735E-11 2.721832702072196E-14 2.161131456367922E-12 1.431105108976467E-15
tp -4.115130774758035E-12 1.108540727103735E-11 1.049113072550334E-7 3.728463337478163E-11 2.25665312441155E-8 4.601361021725561E-12
node -1.051292430094842E-14 2.721832702072196E-14 3.728463337478163E-11 1.074297358987586E-8 -1.071452799366931E-8 -1.290384851071473E-10
peri -8.181513420807131E-13 2.161131456367922E-12 2.25665312441155E-8 -1.071452799366931E-8 1.557715753085927E-8 1.297615001521221E-10
i -3.303525378585523E-16 1.431105108976467E-15 4.601361021725561E-12 -1.290384851071473E-10 1.297615001521221E-10 3.139142890666311E-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 15.9   n/a MPO433322  
rotation period rot_per 8.50 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

201758 (2003 WC26)          Discovered 2003-Nov-21 by Schwartz, M., Holvorcem, P. R. at Nogales
Reference: 20081212/Numbers.arcLast Updated: 2008-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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