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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723035046568241 7.6605e-08  
a 2.336826395902311 2.2363e-08 AU
q 1.934183018113767 1.8288e-07 AU
i 6.076884128155267 9.9627e-06 deg
node 348.7820044840114 6.7734e-05 deg
peri 330.5648815157788 7.4841e-05 deg
M 253.4961530776783 3.8361e-05 deg
tp 2457186.512079526894
(2015-Jun-13.01207953)
0.00014217 JED
period 1304.78243411278
3.57
1.873e-05
5.128e-08
d
yr
n .275908067573573 3.9606e-09 deg/d
Q 2.739469773690854 2.6216e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      527  
   data-arc span      8605 days (23.56 yr)  
   first obs. used      1990-09-16  
   last obs. used      2014-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62459  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:30:49  

Additional Information
 Earth MOID = .923136 AU 
 T_jup = 3.540 
[ 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 14.8 mag n/a MPO250508  

30820 (1990 RU2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar (675)
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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