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30849 (1991 RE20)
Classification: Main-belt Asteroid          SPK-ID: 2030849
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07402609727129458 5.8673e-08  
a 2.767731899940421 3.052e-08 AU
q 2.562847509094566 1.5579e-07 AU
i 11.28905456277986 9.574e-06 deg
node 344.0411135956658 3.1814e-05 deg
peri 107.6708738200989 8.9423e-05 deg
M 246.8712959104465 7.9573e-05 deg
tp 2457329.011896276267
(2015-Nov-02.51189628)
0.00037315 JED
period 1681.839142335102
4.60
2.7818e-05
7.616e-08
d
yr
n .2140513863294727 3.5405e-09 deg/d
Q 2.972616290786275 3.2779e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1991-09-14  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47418  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:03:37  

Additional Information
 Earth MOID = 1.60581 AU 
 T_jup = 3.307 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a PDS3 (MPO 18559)  

30849 (1991 RE20)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar (675)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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