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442274 (2011 QR72)
Classification: Main-belt Asteroid          SPK-ID: 2442274
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2017492871695817 9.3462e-08  
a 2.473233643687653 2.404e-08 au
q 1.974260519069842 2.221e-07 au
i 7.247126897430254 6.5477e-06 deg
node 147.2212486219969 3.8533e-05 deg
peri 196.3350971311967 4.0867e-05 deg
M 84.12584087816143 1.2794e-05 deg
tp 2458668.511482673083
(2019-Jul-04.01148267)
4.7987e-05 TDB
period 1420.679603200446
3.89
2.0713e-05
5.671e-08
d
yr
n .2533998511620829 3.6946e-09 deg/d
Q 2.972206768305464 2.889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      267  
   data-arc span      5525 days (15.13 yr)  
   first obs. used      2004-12-11  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56749  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:40:51  

Additional Information
 Earth MOID = .967336 au 
 Jupiter MOID = 2.43557 au 
 T_jup = 3.444 
[ 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 16.9   n/a MPO440831  

442274 (2011 QR72)          Discovered 2011-Aug-01 by Siding Spring Survey at Siding Spring
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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