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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103608195899423 4.5109e-08  
a 2.334004972253763 8.0998e-09 au
q 2.076422270588838 1.0508e-07 au
i 6.622047121696276 4.6541e-06 deg
node 343.9036340910875 2.9896e-05 deg
peri 39.95156818920677 3.6038e-05 deg
M 152.4950011421095 1.7977e-05 deg
tp 2458648.798456476257
(2019-Jun-14.29845648)
6.4803e-05 TDB
period 1302.420106764427
3.57
6.7798e-06
1.856e-08
d
yr
n .276408509151736 1.4389e-09 deg/d
Q 2.591587673918689 8.9937e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1088  
   data-arc span      11147 days (30.52 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:39  

Additional Information
 Earth MOID = 1.0823 au 
 Jupiter MOID = 2.84482 au 
 T_jup = 3.552 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.11   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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