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18017 (1999 JC124)
Classification: Main-belt Asteroid          SPK-ID: 2018017
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2390774679185049 1.919e-08  
a 2.71941021005289 1.0721e-08 au
q 2.069260502801716 5.4419e-08 au
i 9.63196759019355 9.5462e-07 deg
node 233.3740533204806 2.5069e-06 deg
peri 13.10684495414237 5.311e-06 deg
M 337.2240174448203 7.2875e-06 deg
tp 2459500.129912932663
(2021-Oct-12.62991293)
3.3334e-05 TDB
period 1637.987233498049
4.48
9.6866e-06
2.652e-08
d
yr
n .2197819327512047 1.2997e-09 deg/d
Q 3.369559917304064 1.3284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2277  
   data-arc span      14697 days (40.24 yr)  
   first obs. used      1981-05-05  
   last obs. used      2021-07-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44494  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:29:28  

Additional Information
 Earth MOID = 1.05758 au 
 Jupiter MOID = 1.66191 au 
 T_jup = 3.298 
[ 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 13.45   n/a MPO636336  
diameter diameter 7.145 km 0.185 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.0300 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Owings, L.E. (2018) Minor Planet Bull. 45, 227-231.]
geometric albedo albedo 0.138   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18017 (1999 JC124)          Discovered 1999-May-14 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JC124 = 1981 JW = 1986 RN8 = 1990 KV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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