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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102337863764348 6.0857e-08  
a 2.334010859173866 1.1304e-08 au
q 2.076724004723415 1.4327e-07 au
i 6.628089703324013 6.2215e-06 deg
node 343.9881944951516 4.1712e-05 deg
peri 39.23332616574182 5.2001e-05 deg
M 15.74955457141409 2.6426e-05 deg
tp 2457343.520516242376
(2015-Nov-17.02051624)
9.5671e-05 JED
period 1302.425034291168
3.57
9.4616e-06
2.59e-08
d
yr
n .2764074634022421 2.008e-09 deg/d
Q 2.591297713624318 1.255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      728  
   data-arc span      9224 days (25.25 yr)  
   first obs. used      1990-09-14  
   last obs. used      2015-12-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53611  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:14:56  

Additional Information
 Earth MOID = 1.08195 au 
 Jupiter MOID = 2.85489 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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