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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2029013677168303 5.2708e-08  
a 2.427381786929458 2.5063e-08 au
q 1.934862702390548 1.2141e-07 au
i .5945572086080376 5.6764e-06 deg
node 192.2368474012806 0.00057065 deg
peri 164.8077040750568 0.00057105 deg
M 125.9539152462909 2.97e-05 deg
tp 2458517.202296351699
(2019-Feb-02.70229635)
0.00010768 TDB
period 1381.355815523265
3.78
2.1394e-05
5.857e-08
d
yr
n .2606135189459713 4.0362e-09 deg/d
Q 2.919900871468369 3.0148e-08 au
  Orbit Determination Parameters
   # obs. used (total)      281  
   data-arc span      5486 days (15.02 yr)  
   first obs. used      2005-01-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 02:49:36  

Additional Information
 Earth MOID = .930733 au 
 Jupiter MOID = 2.52746 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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