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30820 (1990 RU2)
Classification: Main-belt Asteroid          SPK-ID: 2030820
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723710085290363 6.6511e-08  
a 2.337136153081349 1.3434e-08 au
q 1.934281637305044 1.5534e-07 au
i 6.076781883368363 8.4462e-06 deg
node 348.7773638143233 4.2665e-05 deg
peri 330.4686753265603 4.7399e-05 deg
M 59.1014008026963 1.9244e-05 deg
tp 2457186.250547422444
(2015-Jun-12.75054742)
6.9998e-05 JED
period 1305.041875156393
3.57
1.1252e-05
3.081e-08
d
yr
n .2758532173206001 2.3785e-09 deg/d
Q 2.739990668857653 1.575e-08 au
  Orbit Determination Parameters
   # obs. used (total)      737  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1990-09-16  
   last obs. used      2015-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56306  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:58  

Additional Information
 Earth MOID = .922332 au 
 Jupiter MOID = 2.56135 au 
 T_jup = 3.539 
[ 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 15.0 mag n/a MPO358916  

30820 (1990 RU2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RU2 = 2000 JF24 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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