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18014 (1999 JC121)
Classification: Main-belt Asteroid          SPK-ID: 2018014
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09847430848220567 4.4228e-08  
a 3.014862393015288 1.9573e-08 au
q 2.7179759036941 1.4148e-07 au
i 8.414386509521945 4.4383e-06 deg
node 99.8386086105981 3.1807e-05 deg
peri 263.1196739410969 3.9081e-05 deg
M 256.6844797755945 2.4026e-05 deg
tp 2459549.235092172428
(2021-Nov-30.73509217)
0.00012924 TDB
period 1912.051865518358
5.23
1.862e-05
5.098e-08
d
yr
n .1882794115014259 1.8335e-09 deg/d
Q 3.311748882336477 2.1501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1163  
   data-arc span      9924 days (27.17 yr)  
   first obs. used      1993-04-16  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57511  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:18:05  

Additional Information
 Earth MOID = 1.73167 au 
 Jupiter MOID = 2.14934 au 
 T_jup = 3.225 
[ 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 14.0   n/a MPO474005  
diameter diameter 5.305 km 0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.300   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18014 (1999 JC121)          Discovered 1999-May-13 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 JC121 = 1998 FC94 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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