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30818 (1990 RH2)
Classification: Main-belt Asteroid          SPK-ID: 2030818
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1101399559481964 6.0817e-08  
a 2.333792312602587 1.1251e-08 au
q 2.076748530100299 1.431e-07 au
i 6.628073131015238 6.1754e-06 deg
node 343.9869967865048 4.169e-05 deg
peri 39.21590809145873 5.1969e-05 deg
M 71.05855278366047 2.6315e-05 deg
tp 2457343.457112212134
(2015-Nov-16.95711221)
9.5489e-05 JED
period 1302.242108495485
3.57
9.4168e-06
2.578e-08
d
yr
n .2764462903260881 1.999e-09 deg/d
Q 2.590836095104875 1.249e-08 au
  Orbit Determination Parameters
   # obs. used (total)      741  
   data-arc span      9288 days (25.43 yr)  
   first obs. used      1990-09-14  
   last obs. used      2016-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54855  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 21:07:01  

Additional Information
 Earth MOID = 1.08236 au 
 Jupiter MOID = 2.85409 au 
 T_jup = 3.552 
[ 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 15.1 mag n/a MPO296376  

30818 (1990 RH2)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 RH2 = 1992 EA2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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