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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723035409051454 7.0623e-08  
a 2.336826417318466 2.1675e-08 AU
q 1.93418295113381 1.6987e-07 AU
i 6.076879915722476 9.0273e-06 deg
node 348.7818761245292 5.9728e-05 deg
peri 330.5649957206399 6.574e-05 deg
M 253.4961530747062 3.3257e-05 deg
tp 2457186.512084844155
(2015-Jun-13.01208484)
0.00012365 JED
period 1304.782452049558
3.57
1.8153e-05
4.97e-08
d
yr
n .2759080637806789 3.8387e-09 deg/d
Q 2.739469883503123 2.541e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      534  
   data-arc span      8651 days (23.69 yr)  
   first obs. used      1990-09-16  
   last obs. used      2014-05-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61918  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:28:22  

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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