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168317 (1988 RY4)
Classification: Main-belt Asteroid          SPK-ID: 2168317
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3505338604387159 9.2461e-08  
a 2.779003320877459 2.8361e-08 au
q 1.804868558638272 2.641e-07 au
i 9.811925758626161 1.0671e-05 deg
node 348.1489734737528 5.1245e-05 deg
peri 5.490661325469674 5.3594e-05 deg
M .02834038940888198 2.1857e-05 deg
tp 2457600.366790457092
(2016-Jul-30.86679046)
0.00010273 JED
period 1692.123377522442
4.63
2.5903e-05
7.092e-08
d
yr
n .2127504440764252 3.2568e-09 deg/d
Q 3.753138083116646 3.8302e-08 au
  Orbit Determination Parameters
   # obs. used (total)      217  
   data-arc span      15025 days (41.14 yr)  
   first obs. used      1974-06-23  
   last obs. used      2015-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52112  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 18:27:07  

Additional Information
 Earth MOID = .799 au 
 Jupiter MOID = 1.68614 au 
 T_jup = 3.221 
[ 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 15.4 mag n/a MPO338354  

168317 (1988 RY4)          Discovered 1988-Sep-02 by Debehogne, H. at La Silla
Reference: 20071124/Numbers.arcLast Updated: 2007-11-26

[ show close-approach data ]
Alternate Designations
 1988 RY4 = 2002 TU182 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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