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JPL Small-Body Database Browser
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461478 (2002 RQ239)
Classification: Main-belt Asteroid          SPK-ID: 2461478
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326529157282501 5.9698e-08  
a 2.381413785025751 1.7807e-08 au
q 2.065512302886637 1.4274e-07 au
i 6.471146009241114 7.353e-06 deg
node 327.8502522450948 5.8452e-05 deg
peri 345.3938861897933 6.5142e-05 deg
M 320.3567444658186 3.2355e-05 deg
tp 2459148.314668197186
(2020-Oct-25.81466820)
0.00012137 TDB
period 1342.303497378137
3.68
1.5055e-05
4.122e-08
d
yr
n .2681956805619388 3.0081e-09 deg/d
Q 2.697315267164865 2.0169e-08 au
  Orbit Determination Parameters
   # obs. used (total)      139  
   data-arc span      10011 days (27.41 yr)  
   first obs. used      1991-09-13  
   last obs. used      2019-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62251  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 15:33:32  

Additional Information
 Earth MOID = 1.05241 au 
 Jupiter MOID = 2.56664 au 
 T_jup = 3.518 
[ 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 MPO437756  

461478 (2002 RQ239)          Discovered 2002-Sep-14 by Matson, R. at Palomar
Reference: Last Updated: 2016-03-24

Alternate Designations
 2002 RQ239 = 2015 BM11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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