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66518 (1999 RK99)
Classification: Main-belt Asteroid          SPK-ID: 2066518
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2593870007357268 4.4413e-08  
a 2.363484727240017 9.2957e-09 au
q 1.750427512556532 1.0544e-07 au
i 5.551098971650441 5.3706e-06 deg
node 210.8567504281214 3.6434e-05 deg
peri 149.0490393174327 3.7638e-05 deg
M 338.5784262686545 1.3851e-05 deg
tp 2459475.472611466077
(2021-Sep-17.97261147)
5.1408e-05 TDB
period 1327.173273277628
3.63
7.8298e-06
2.144e-08
d
yr
n .2712532020110177 1.6003e-09 deg/d
Q 2.976541941923503 1.1707e-08 au
  Orbit Determination Parameters
   # obs. used (total)      894  
   data-arc span      14524 days (39.76 yr)  
   first obs. used      1981-10-01  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54144  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 22:32:18  

Additional Information
 Earth MOID = .749566 au 
 Jupiter MOID = 2.49725 au 
 T_jup = 3.497 
[ 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 15.54   n/a E2021B10  
diameter diameter 1.798 km 0.595 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.141   0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

66518 (1999 RK99)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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