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452140 (2015 QR9)
Classification: Mars-crossing Asteroid          SPK-ID: 2452140
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3506006220978872 1.755e-07  
a 2.550976851444863 3.2803e-08 au
q 1.656602780370984 4.5431e-07 au
i 7.851220567612884 7.8283e-06 deg
node 72.78346619617975 2.8221e-05 deg
peri 311.3578780334015 8.5169e-05 deg
M 56.61332789901216 3.4971e-05 deg
tp 2458766.468461650848
(2019-Oct-09.96846165)
0.00014739 TDB
period 1488.189388124005
4.07
2.8705e-05
7.859e-08
d
yr
n .2419046949755582 4.6659e-09 deg/d
Q 3.445350922518742 4.4303e-08 au
  Orbit Determination Parameters
   # obs. used (total)      273  
   data-arc span      5856 days (16.03 yr)  
   first obs. used      2004-01-16  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47704  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 11:33:40  

Additional Information
 Earth MOID = .673727 au 
 Jupiter MOID = 2.03728 au 
 T_jup = 3.339 
[ 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 MPO503594  

452140 (2015 QR9)          Discovered 2007-Nov-02 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-11-30

Alternate Designations
 2015 QR9 = 2011 WX65 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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