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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1861339358891091 7.7873e-08  
a 2.261264718655262 1.5758e-08 au
q 1.840366616484779 1.6972e-07 au
i 4.364293866778987 6.4894e-06 deg
node 358.2141659876548 6.7277e-05 deg
peri 338.8444193356369 6.8748e-05 deg
M 225.4216823401657 1.9499e-05 deg
tp 2457864.799409296873
(2017-Apr-21.29940930)
7.0616e-05 JED
period 1242.011270859871
3.40
1.2983e-05
3.555e-08
d
yr
n .2898524421205649 3.0298e-09 deg/d
Q 2.682162820825745 1.8691e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      10698 days (29.29 yr)  
   first obs. used      1986-09-01  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .45738  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:39:27  

Additional Information
 Earth MOID = .830005 au 
 Jupiter MOID = 2.68478 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 14.6 mag n/a MPO337413  

18329 (1986 RY4)          Discovered 1986-Sep-01 by Debehogne, H. at La Silla
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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