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74720 (1999 RA167)
Classification: Main-belt Asteroid          SPK-ID: 2074720
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1798452057386516 4.7218e-08  
a 2.290233202151139 1.0737e-08 au
q 1.878345740720776 1.1127e-07 au
i 7.833520714722559 6.2025e-06 deg
node 23.72428909909231 3.6896e-05 deg
peri 277.5524117719683 4.072e-05 deg
M 23.21903912279973 1.8368e-05 deg
tp 2458918.849334450731
(2020-Mar-10.34933445)
6.4344e-05 TDB
period 1265.954178477331
3.47
8.9026e-06
2.437e-08
d
yr
n .2843704820604187 1.9998e-09 deg/d
Q 2.702120663581502 1.2668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      537  
   data-arc span      7631 days (20.89 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:13:38  

Additional Information
 Earth MOID = .882942 au 
 Jupiter MOID = 2.56043 au 
 T_jup = 3.565 
[ 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 16.1   n/a MPO468694  

74720 (1999 RA167)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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