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JPL Small-Body Database Browser
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212701 (2007 QR9)
Classification: Main-belt Asteroid          SPK-ID: 2212701
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2026696024919055 5.4543e-08  
a 2.42720302567388 2.8082e-08 au
q 1.935282753293404 1.2925e-07 au
i .5945640446095422 6.3145e-06 deg
node 192.2453207425021 0.00057446 deg
peri 164.7956282297677 0.00057486 deg
M 21.73287757033322 3.0008e-05 deg
tp 2458517.117998292010
(2019-Feb-02.61799829)
0.00011391 TDB
period 1381.203226205633
3.78
2.397e-05
6.563e-08
d
yr
n .2606423103926369 4.5234e-09 deg/d
Q 2.919123298054355 3.3774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      258  
   data-arc span      4454 days (12.19 yr)  
   first obs. used      2005-01-16  
   last obs. used      2017-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59609  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-10 23:46:03  

Additional Information
 Earth MOID = .930258 au 
 Jupiter MOID = 2.52459 au 
 T_jup = 3.481 
[ 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 17.1   n/a MPO300064  

212701 (2007 QR9)          Discovered 2007-Aug-22 by LINEAR at Socorro
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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