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442251 (2011 ON27)
Classification: Main-belt Asteroid          SPK-ID: 2442251
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350909148973843 9.5755e-08  
a 2.481545736717834 2.2072e-08 au
q 1.898156879113135 2.264e-07 au
i 4.999677050708413 3.5649e-06 deg
node 50.20903647079962 0.00010871 deg
peri 316.8154729289006 0.00011147 deg
M 52.6517029767446 1.9584e-05 deg
tp 2458791.670535551177
(2019-Nov-04.17053555)
7.9404e-05 TDB
period 1427.847589939904
3.91
1.905e-05
5.216e-08
d
yr
n .2521277498638015 3.3638e-09 deg/d
Q 3.064934594322533 2.7261e-08 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      5430 days (14.87 yr)  
   first obs. used      2004-12-19  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .521  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 16:00:06  

Additional Information
 Earth MOID = .900982 au 
 Jupiter MOID = 2.40134 au 
 T_jup = 3.434 
[ 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 17.3   n/a MPO446754  

442251 (2011 ON27)          Discovered 2008-Dec-30 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 ON27 = 2015 MR44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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