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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104106599698891 6.5307e-08  
a 2.334183947332637 1.4076e-08 AU
q 2.07646515721652 1.5114e-07 AU
i 6.627946268050411 6.8752e-06 deg
node 343.9900459558067 5.599e-05 deg
peri 39.27954436508661 6.5359e-05 deg
M 265.1654222169136 3.2588e-05 deg
tp 2457343.635189196772
(2015-Nov-17.13518920)
0.00011865 JED
period 1302.569916991491
3.57
1.1783e-05
3.226e-08
d
yr
n .2763767190566491 2.5e-09 deg/d
Q 2.591902737448754 1.563e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      9099 days (24.91 yr)  
   first obs. used      1990-09-14  
   last obs. used      2015-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56884  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:18:19  

Additional Information
 Earth MOID = 1.08329 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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