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74695 (1999 RA139)
Classification: Main-belt Asteroid          SPK-ID: 2074695
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1122548911293319 3.7158e-08  
a 2.168189192244451 8.0485e-09 au
q 1.924799350521256 8.0925e-08 au
i 3.728623781886905 3.0816e-06 deg
node 227.1812030031083 6.9192e-05 deg
peri 146.8671169314563 7.1408e-05 deg
M 145.6529453859984 1.8168e-05 deg
tp 2458528.696715071214
(2019-Feb-14.19671507)
5.8086e-05 TDB
period 1166.122539604275
3.19
6.4931e-06
1.778e-08
d
yr
n .3087154117801089 1.719e-09 deg/d
Q 2.411579033967645 8.952e-09 au
  Orbit Determination Parameters
   # obs. used (total)      981  
   data-arc span      9625 days (26.35 yr)  
   first obs. used      1993-12-14  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:07:36  

Additional Information
 Earth MOID = .926903 au 
 Jupiter MOID = 3.03468 au 
 T_jup = 3.680 
[ 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 MPO449471  
diameter diameter 1.582 km 0.351 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.338   0.242 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74695 (1999 RA139)          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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