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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2593885328245876 4.6438e-08  
a 2.36276736626412 1.0163e-08 au
q 1.749892605723055 1.0931e-07 au
i 5.551480935169804 5.5188e-06 deg
node 210.8789674012399 3.6463e-05 deg
peri 149.106883643355 3.8034e-05 deg
M 285.337621661293 1.6112e-05 deg
tp 2459475.624452955610
(2021-Sep-18.12445296)
6.0764e-05 TDB
period 1326.569086973112
3.63
8.5588e-06
2.343e-08
d
yr
n .2713767443664973 1.7509e-09 deg/d
Q 2.975642126805185 1.2799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      868  
   data-arc span      14133 days (38.69 yr)  
   first obs. used      1981-10-01  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54097  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:22:53  

Additional Information
 Earth MOID = .748269 au 
 Jupiter MOID = 2.49764 au 
 T_jup = 3.498 
[ 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 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

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