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227441 (2005 WC31)
Classification: Main-belt Asteroid          SPK-ID: 2227441
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05439389608426405 4.3169e-08  
a 2.537412518694833 1.7514e-08 au
q 2.399392765830036 1.1325e-07 au
i 2.512571160558826 5.6336e-06 deg
node 29.59641456379701 0.00010156 deg
peri 69.5771281273985 0.00011536 deg
M 237.0349298816525 5.5647e-05 deg
tp 2459704.771362294655
(2022-May-05.27136229)
0.00023039 TDB
period 1476.335436163743
4.04
1.5285e-05
4.185e-08
d
yr
n .2438470222834045 2.5247e-09 deg/d
Q 2.675432271559631 1.8467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      306  
   data-arc span      21873 days (59.89 yr)  
   first obs. used      1960-09-26  
   last obs. used      2020-08-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57851  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:39:47  

Additional Information
 Earth MOID = 1.41746 au 
 Jupiter MOID = 2.39114 au 
 T_jup = 3.444 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.82   n/a E2021B55  

227441 (2005 WC31)          Discovered 2005-Nov-21 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2005 WC31 = 2001 YH39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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