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JPL Small-Body Database Browser
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(2007 RU9)
Classification: Apollo [NEO, PHA]          SPK-ID: 3384067
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .629372064846744 1.5385e-07  
a 1.919988522609632 7.963e-09 au
q .7116013816527583 2.9604e-07 au
i 5.652441537721153 2.7092e-05 deg
node 163.9272069749689 5.3077e-05 deg
peri 286.4929387167984 6.0068e-05 deg
M 251.7339310007264 9.5502e-06 deg
tp 2459292.737701454417
(2021-Mar-19.23770145)
2.5668e-05 TDB
period 971.7317114773606
2.66
6.0453e-06
1.655e-08
d
yr
n .3704726271129696 2.3048e-09 deg/d
Q 3.128375663566505 1.2975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      2957 days (8.10 yr)  
   first obs. used      2007-08-24  
   last obs. used      2015-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46783  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-10 07:03:10  

Additional Information
 Earth MOID = .00158975 au 
 Jupiter MOID = 2.14411 au 
 T_jup = 3.650 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.7   n/a MPO437957  
rotation period rot_per 3.31 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2016) Minor Planet Bull. 43, 66-79.]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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