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205063 (1999 RD39)
Classification: Main-belt Asteroid          SPK-ID: 2205063
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1921107848925833 5.2187e-08  
a 2.588310796483032 1.3294e-08 au
q 2.09106837782473 1.3432e-07 au
i 12.15379186042037 4.4276e-06 deg
node 153.9818631393593 2.7953e-05 deg
peri 231.6676003201888 3.0845e-05 deg
M 333.596289495509 1.227e-05 deg
tp 2459112.054096816814
(2020-Sep-19.55409682)
5.1858e-05 TDB
period 1520.978456691617
4.16
1.1718e-05
3.208e-08
d
yr
n .23668974298496 1.8235e-09 deg/d
Q 3.085553215141335 1.5848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      7722 days (21.14 yr)  
   first obs. used      1999-09-05  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:46:05  

Additional Information
 Earth MOID = 1.11626 au 
 Jupiter MOID = 2.43658 au 
 T_jup = 3.364 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO436992  
diameter diameter 3.989 km 0.708 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

205063 (1999 RD39)          Discovered 1999-Sep-13 by Klet at Klet
Reference: 20090209/Numbers.arcLast Updated: 2009-02-11

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