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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06804833868345647 6.2685e-08  
a 2.883955386227798 3.1062e-08 AU
q 2.68770701335779 1.8937e-07 AU
i 2.989231283477534 5.2845e-06 deg
node 129.9820172373131 0.00012559 deg
peri 205.0470942493475 0.00013633 deg
M 284.4272739236217 5.5952e-05 deg
tp 2457376.029294324698
(2015-Dec-19.52929432)
0.00028088 JED
period 1788.880102330301
4.90
2.8901e-05
7.913e-08
d
yr
n .2012432244794063 3.2513e-09 deg/d
Q 3.080203759097806 3.3176e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1111  
   data-arc span      15656 days (42.86 yr)  
   first obs. used      1971-08-19  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50264  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:31:44  

Additional Information
 Earth MOID = 1.6785 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 13.2 mag n/a MPO263594  

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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