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366349 (1999 RQ31)
Classification: Main-belt Asteroid          SPK-ID: 2366349
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2554939186021928 1.1466e-07  
a 2.361673699803951 1.6495e-08 au
q 1.758280431781301 2.7707e-07 au
i 4.919285505073208 7.1994e-06 deg
node 140.4020073019499 8.735e-05 deg
peri 214.1327270639457 8.9235e-05 deg
M 260.8160130815227 1.3737e-05 deg
tp 2459365.730743721361
(2021-May-31.23074372)
5.1513e-05 TDB
period 1325.64813963125
3.63
1.3888e-05
3.802e-08
d
yr
n .271565273798928 2.8451e-09 deg/d
Q 2.965066967826601 2.0709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      114  
   data-arc span      7556 days (20.69 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:30:57  

Additional Information
 Earth MOID = .755743 au 
 Jupiter MOID = 2.47862 au 
 T_jup = 3.501 
[ 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 17.8   n/a MPO265133  

366349 (1999 RQ31)          Discovered 1999-Sep-05 by Sarounova, L. at Ondrejov
Reference: Last Updated: 2013-07-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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