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74777 (1999 RA239)
Classification: Main-belt Asteroid          SPK-ID: 2074777
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068434414370748 4.0662e-08  
a 2.309911415912522 1.0639e-08 au
q 2.063112530821642 9.5511e-08 au
i 10.81273965759833 4.4507e-06 deg
node 257.2087762878415 2.2541e-05 deg
peri 24.11580153897585 3.247e-05 deg
M 39.76881310450031 2.652e-05 deg
tp 2458858.845118988278
(2020-Jan-10.34511899)
9.4146e-05 TDB
period 1282.30523325448
3.51
8.8591e-06
2.425e-08
d
yr
n .2807443896070853 1.9396e-09 deg/d
Q 2.556710301003402 1.1776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      7576 days (20.74 yr)  
   first obs. used      1999-09-08  
   last obs. used      2020-06-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5317  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:47  

Additional Information
 Earth MOID = 1.05123 au 
 Jupiter MOID = 2.54938 au 
 T_jup = 3.554 
[ 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 15.3   n/a MPO474634  

74777 (1999 RA239)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 RA239 = 2001 BF48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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