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18329 (1986 RY4)
Classification: Main-belt Asteroid          SPK-ID: 2018329
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1860610353523873 8.1161e-08  
a 2.26047037615933 1.6054e-08 AU
q 1.839884917587725 1.785e-07 AU
i 4.362484809059074 7.9605e-06 deg
node 358.2453670986653 6.8948e-05 deg
peri 338.4200311682065 7.0666e-05 deg
M 52.00326418128039 1.8844e-05 deg
tp 2456621.181639041991
(2013-Nov-24.68163904)
6.3978e-05 JED
period 1241.356883288124
3.40
1.3224e-05
3.621e-08
d
yr
n .29000523930429 3.0894e-09 deg/d
Q 2.681055834730935 1.9041e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      9412 days (25.77 yr)  
   first obs. used      1986-09-01  
   last obs. used      2012-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47872  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 22:05:13  

Additional Information
 Earth MOID = .830223 AU 
 T_jup = 3.593 
[ 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 14.5 mag n/a MPO233623  

18329 (1986 RY4)          Discovered 1986-Sep-01 by Debehogne, H. at La Silla (809)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1986 RY4 = 1993 TF13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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