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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1105209484864183 8.2182e-08  
a 2.333887706906546 1.8622e-08 AU
q 2.075944223878443 1.8579e-07 AU
i 6.628010591088633 8.0457e-06 deg
node 343.9949080830967 6.7646e-05 deg
peri 39.321126787813 8.048e-05 deg
M 209.8421883875368 4.2293e-05 deg
tp 2457343.705040417283
(2015-Nov-17.20504042)
0.00015532 JED
period 1302.321953485307
3.57
1.5586e-05
4.267e-08
d
yr
n .2764293414823876 3.3083e-09 deg/d
Q 2.591831189934649 2.068e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      517  
   data-arc span      8580 days (23.49 yr)  
   first obs. used      1990-09-14  
   last obs. used      2014-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58877  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:28:53  

Additional Information
 Earth MOID = 1.08152 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 15.0 mag n/a MPO263605  

30818 (1990 RH2)          Discovered 1990-Sep-14 by Holt, H. E. at Palomar (675)
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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