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 ]  
9729 (1981 RQ)
Classification: Main-belt Asteroid          SPK-ID: 2009729
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839852503215119 1.1136e-07  
a 2.579412623844534 2.5913e-08 AU
q 2.104838746564029 2.9601e-07 AU
i 13.09906939152949 1.0086e-05 deg
node 335.9250893331825 2.9326e-05 deg
peri 28.79982724380604 3.4832e-05 deg
M 316.6367761397039 2.1173e-05 deg
tp 2456982.763086356384
(2014-Nov-21.26308636)
9.023e-05 JED
period 1513.141903371626
4.14
2.2802e-05
6.243e-08
d
yr
n .2379155578190239 3.5852e-09 deg/d
Q 3.053986501125038 3.068e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      11980 days (32.80 yr)  
   first obs. used      1981-09-07  
   last obs. used      2014-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52196  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:22:26  

Additional Information
 Earth MOID = 1.10887 AU 
 T_jup = 3.365 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO266010  

9729 (1981 RQ)          Discovered 1981-Sep-07 by Mrkos, A. at Klet (046)
Reference: 19981208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 RQ = 1985 QU 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Jul-24 12:13 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin