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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1859926688525946 7.9058e-08  
a 2.261140866872199 1.5614e-08 AU
q 1.840585242390969 1.7289e-07 AU
i 4.362469379143 7.0021e-06 deg
node 358.2356387943892 6.8184e-05 deg
peri 338.5237182735858 6.9731e-05 deg
M 109.9019030354504 1.8893e-05 deg
tp 2456621.366144181724
(2013-Nov-24.86614418)
6.283e-05 JED
period 1241.909232914313
3.40
1.2864e-05
3.522e-08
d
yr
n .2898762570233975 3.0026e-09 deg/d
Q 2.681696491353429 1.8518e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      971  
   data-arc span      10376 days (28.41 yr)  
   first obs. used      1986-09-01  
   last obs. used      2015-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47341  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:51:14  

Additional Information
 Earth MOID = .832701 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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