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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1839853262184462 1.2182e-07  
a 2.579412612559683 2.3899e-08 AU
q 2.104838541585915 3.1966e-07 AU
i 13.09907540971755 1.0382e-05 deg
node 335.9251381656501 3.0908e-05 deg
peri 28.79979080168693 3.6527e-05 deg
M 316.6367662545505 2.2188e-05 deg
tp 2456982.763126709291
(2014-Nov-21.26312671)
9.4518e-05 JED
period 1513.141893441702
4.14
2.103e-05
5.758e-08
d
yr
n .2379155593803339 3.3066e-09 deg/d
Q 3.053986683533451 2.8296e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      858  
   data-arc span      11620 days (31.81 yr)  
   first obs. used      1981-09-07  
   last obs. used      2013-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54259  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:26:50  

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 ]
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