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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457401.5 (2016-Jan-14.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2580195155862138 4.4246e-08  
q 1.754917231880811 1.0487e-07 au
tp 2456820.504415380159
(2014-Jun-12.00441538)
4.1594e-05 TDB
node 210.9329276977184 3.6512e-05 deg
peri 148.9385643206985 3.7721e-05 deg
i 5.54153668872094 5.3645e-06 deg
  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
 Jupiter MOID = 2.49725 au 
 T_jup = 3.497 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.957700339420523E-15 -4.629889770943061E-15 6.465053953855563E-13 4.789297098166574E-15 1.377150488960997E-13 -7.723789770233596E-16
q -4.629889770943061E-15 1.099684005987263E-14 -1.37121603046392E-12 -1.179635715710893E-14 -2.884439369236102E-13 1.17962003507094E-15
tp 6.465053953855563E-13 -1.37121603046392E-12 1.730094361029481E-9 7.59817347591168E-12 4.024878007067398E-10 -3.070887908320168E-12
node 4.789297098166574E-15 -1.179635715710893E-14 7.59817347591168E-12 1.33311740451555E-9 -1.32485704075758E-9 -6.049425947973575E-12
peri 1.377150488960997E-13 -2.884439369236102E-13 4.024878007067398E-10 -1.32485704075758E-9 1.422877396800519E-9 5.279135527946289E-12
i -7.723789770233596E-16 1.17962003507094E-15 -3.070887908320168E-12 -6.049425947973575E-12 5.279135527946289E-12 2.877733820241186E-11

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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