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52303 (1991 RU9)
Classification: Main-belt Asteroid          SPK-ID: 2052303
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667949371214195 2.6094e-08  
a 2.288187354929303 6.4322e-09 au
q 1.906529288941843 6.0482e-08 au
i 1.164185045236303 3.1538e-06 deg
node 280.5852488996474 0.00014397 deg
peri 65.17523776618695 0.00014436 deg
M 172.478773253175 1.0109e-05 deg
tp 2458594.784129852679
(2019-Apr-21.28412985)
3.462e-05 TDB
period 1264.258257060751
3.46
5.3308e-06
1.459e-08
d
yr
n .2847519468347842 1.2007e-09 deg/d
Q 2.669845420916763 7.505e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1624  
   data-arc span      10787 days (29.53 yr)  
   first obs. used      1991-09-10  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4944  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:17:45  

Additional Information
 Earth MOID = .897805 au 
 Jupiter MOID = 2.7341 au 
 T_jup = 3.581 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.13   n/a MPCxxxxx  

52303 (1991 RU9)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RU9 = 1998 SQ130 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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