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18354 (1990 RK5)
Classification: Main-belt Asteroid          SPK-ID: 2018354
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2703752686275436 6.314e-08  
a 2.860999995000233 1.9743e-08 AU
q 2.087456352808644 1.878e-07 AU
i 4.695240376133206 5.3337e-06 deg
node 207.7203951950183 7.3521e-05 deg
peri 119.9671480415284 7.426e-05 deg
M 16.50648489158296 8.7362e-06 deg
tp 2456919.454797749341
(2014-Sep-18.95479775)
4.292e-05 JED
period 1767.564263492275
4.84
1.8296e-05
5.009e-08
d
yr
n .2036701054867041 2.1082e-09 deg/d
Q 3.634543637191822 2.5081e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      747  
   data-arc span      10699 days (29.29 yr)  
   first obs. used      1985-09-07  
   last obs. used      2014-12-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55541  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:53:42  

Additional Information
 Earth MOID = 1.08179 AU 
 T_jup = 3.242 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2 mag n/a MPO302177  

18354 (1990 RK5)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RK5 = 1995 UT5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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