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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07437629265655238 4.6596e-08  
a 2.768276598753208 1.7328e-08 au
q 2.562382448290054 1.3123e-07 au
i 11.28893016664587 6.6329e-06 deg
node 344.0437821286657 2.4301e-05 deg
peri 108.2134528280345 6.5479e-05 deg
M 57.62127516145439 5.5644e-05 deg
tp 2457331.226873235178
(2015-Nov-04.72687324)
0.00026047 JED
period 1682.33565403951
4.61
1.5796e-05
4.325e-08
d
yr
n .2139882128370711 2.0091e-09 deg/d
Q 2.974170749216362 1.8616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1067  
   data-arc span      8972 days (24.56 yr)  
   first obs. used      1991-09-14  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4599  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:56:51  

Additional Information
 Earth MOID = 1.60406 au 
 Jupiter MOID = 2.1562 au 
 T_jup = 3.306 
[ 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 13.3 mag n/a MPO329041  

30849 (1991 RE20)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar
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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