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74726 (1999 RW169)
Classification: Main-belt Asteroid          SPK-ID: 2074726
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2124006820757995 4.7988e-08  
a 2.375597047940156 1.3137e-08 au
q 1.871018614620411 1.1294e-07 au
i 1.759939778894724 3.1829e-06 deg
node 279.7824047194259 0.00015945 deg
peri 65.40855875699054 0.00015979 deg
M 239.6873402591122 1.5243e-05 deg
tp 2459447.457695653385
(2021-Aug-20.95769565)
5.9872e-05 TDB
period 1337.388524048527
3.66
1.1094e-05
3.037e-08
d
yr
n .2691813138266002 2.2329e-09 deg/d
Q 2.880175481259901 1.5928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      453  
   data-arc span      8039 days (22.01 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .542  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:07:52  

Additional Information
 Earth MOID = .86449 au 
 Jupiter MOID = 2.53815 au 
 T_jup = 3.510 
[ 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 16.7   n/a MPO313951  

74726 (1999 RW169)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RW169 = 2002 JD137 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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