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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723447667174696 7.0608e-08  
a 2.33709834326792 2.1585e-08 AU
q 1.934311674501625 1.6986e-07 AU
i 6.076696611212547 9.0247e-06 deg
node 348.7795871558451 5.9686e-05 deg
peri 330.5312227015343 6.5673e-05 deg
M 308.7139086073892 3.3575e-05 deg
tp 2457186.413535279933
(2015-Jun-12.91353528)
0.00012322 JED
period 1305.010206147604
3.57
1.808e-05
4.95e-08
d
yr
n .2758599115195595 3.8217e-09 deg/d
Q 2.739885012034214 2.5305e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      9037 days (24.74 yr)  
   first obs. used      1990-09-16  
   last obs. used      2015-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6138  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:47:07  

Additional Information
 Earth MOID = .925133 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 14.9 mag n/a MPO296376  

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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