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29211 (1991 RY15)
Classification: Main-belt Asteroid          SPK-ID: 2029211
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06813518848261139 5.8615e-08  
a 2.88451992016035 2.6516e-08 au
q 2.687982611718378 1.8283e-07 au
i 2.989182612572848 5.1681e-06 deg
node 129.9797972084519 0.00010737 deg
peri 204.7243521023603 0.00011497 deg
M 45.44037681102062 4.1254e-05 deg
tp 2457374.635402549489
(2015-Dec-18.13540255)
0.00020445 JED
period 1789.405387643341
4.90
2.4674e-05
6.755e-08
d
yr
n .2011841489278863 2.7741e-09 deg/d
Q 3.081057228602323 2.8323e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1209  
   data-arc span      16165 days (44.26 yr)  
   first obs. used      1971-08-19  
   last obs. used      2015-11-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49759  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 16:55:07  

Additional Information
 Earth MOID = 1.67737 au 
 Jupiter MOID = 2.16834 au 
 T_jup = 3.288 
[ 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 13.3 mag n/a MPO344530  

29211 (1991 RY15)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RY15 = 1971 QE2 = 1998 AY4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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