Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
29211 (1991 RY15)
Classification: Main-belt Asteroid          SPK-ID: 2029211
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06811383565136581 5.8636e-08  
a 2.884603239500645 2.6416e-08 au
q 2.688121848525901 1.8284e-07 au
i 2.989259846650981 5.1684e-06 deg
node 129.9816255432128 0.00010736 deg
peri 204.8161617021291 0.00011496 deg
M 5.122657644569318 4.1146e-05 deg
tp 2457375.036365685994
(2015-Dec-18.53636569)
0.00020446 JED
period 1789.482918648761
4.90
2.4581e-05
6.73e-08
d
yr
n .2011754324382353 2.7634e-09 deg/d
Q 3.081084630475389 2.8215e-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 = 1.67624 au 
 Jupiter MOID = 2.16739 au 
 T_jup = 3.287 
[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Feb-09 15:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin