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312220 (2007 WR1)
Classification: Main-belt Asteroid          SPK-ID: 2312220
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1334653350274053 7.3989e-08  
a 2.414839374544805 2.3753e-08 au
q 2.092542028383813 1.6405e-07 au
i 3.455827998312838 6.0941e-06 deg
node 56.987014257111 0.00012936 deg
peri 60.01968372610158 0.00013658 deg
M 78.10973543794749 4.4426e-05 deg
tp 2458703.105134830869
(2019-Aug-07.60513483)
0.00016632 TDB
period 1370.663347668617
3.75
2.0223e-05
5.537e-08
d
yr
n .2626465503818495 3.8752e-09 deg/d
Q 2.737136720705797 2.6923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      6055 days (16.58 yr)  
   first obs. used      2003-09-29  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60093  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:26:59  

Additional Information
 Earth MOID = 1.11136 au 
 Jupiter MOID = 2.34556 au 
 T_jup = 3.503 
[ 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 17.9   n/a MPO460289  

312220 (2007 WR1)          Discovered 2007-Nov-17 by Chante-Perdrix at Chante-Perdrix
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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