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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336816427892606 9.679e-08  
a 2.415398872656449 2.4976e-08 au
q 2.092504383368407 2.274e-07 au
i 3.455878674301536 6.4828e-06 deg
node 56.9914464487279 0.00017094 deg
peri 60.07055376521786 0.00017812 deg
M 333.0139357329198 4.854e-05 deg
tp 2458703.282402584618
(2019-Aug-07.78240258)
0.00018552 TDB
period 1371.139732132043
3.75
2.1267e-05
5.823e-08
d
yr
n .262555297292874 4.0723e-09 deg/d
Q 2.738293361944492 2.8314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      90  
   data-arc span      5573 days (15.26 yr)  
   first obs. used      2003-09-29  
   last obs. used      2019-01-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60411  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 09:59:40  

Additional Information
 Earth MOID = 1.11162 au 
 Jupiter MOID = 2.3458 au 
 T_jup = 3.502 
[ 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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