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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1838634432797685 1.0581e-07  
a 2.579043613957072 2.333e-08 AU
q 2.104851774726227 2.8482e-07 AU
i 13.09962042642103 9.9643e-06 deg
node 335.924715055977 2.36e-05 deg
peri 28.80238949995735 2.9924e-05 deg
M 4.218168968455937 1.791e-05 deg
tp 2456982.774114964251
(2014-Nov-21.27411496)
7.5191e-05 JED
period 1512.817210640428
4.14
2.0527e-05
5.62e-08
d
yr
n .2379666211277432 3.2289e-09 deg/d
Q 3.053235453187917 2.7619e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      12048 days (32.99 yr)  
   first obs. used      1981-09-07  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51845  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:33  

Additional Information
 Earth MOID = 1.11042 AU 
 T_jup = 3.366 
[ 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 ]
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