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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06807517159066083 7.3256e-08  
a 2.883426095750506 3.1989e-08 AU
q 2.687136369513301 2.1526e-07 AU
i 2.989197343883288 5.8461e-06 deg
node 129.9841869851255 0.00013368 deg
peri 205.1986717795327 0.00014505 deg
M 244.0186079001757 5.8899e-05 deg
tp 2457376.665805727579
(2015-Dec-20.16580573)
0.00029673 JED
period 1788.387656904514
4.90
2.9761e-05
8.148e-08
d
yr
n .2012986382511256 3.3498e-09 deg/d
Q 3.079715821987711 3.4167e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1053  
   data-arc span      15573 days (42.64 yr)  
   first obs. used      1971-08-19  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52972  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:28:16  

Additional Information
 Earth MOID = 1.67615 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 (675)
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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