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30305 Severi (2000 JA)
Classification: Main-belt Asteroid          SPK-ID: 2030305
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09093434846187992 5.6589e-08  
a 2.839092626497707 2.1033e-08 au
q 2.58092158828421 1.697e-07 au
i 2.860856335881114 5.2484e-06 deg
node 58.24622824652457 0.00010829 deg
peri 277.3595299488663 0.00011216 deg
M 53.75879650998099 2.8339e-05 deg
tp 2457339.575532125271
(2015-Nov-13.07553213)
0.00013722 JED
period 1747.30117735174
4.78
1.9417e-05
5.316e-08
d
yr
n .2060320250831779 2.2896e-09 deg/d
Q 3.097263664711203 2.2946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1040  
   data-arc span      8400 days (23.00 yr)  
   first obs. used      1992-11-23  
   last obs. used      2015-11-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55442  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 14:13:16  

Additional Information
 Earth MOID = 1.57239 au 
 Jupiter MOID = 2.20568 au 
 T_jup = 3.302 
[ 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 14.0 mag n/a MPO347746  
rotation period rot_per 32.6428 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

30305 Severi           Discovered 2000 May 1 by P. G. Comba at Prescott.
Francesco Severi (1879-1961), a student of Corrado Segre and later a professor at the University of Rome, wrote more than 400 books and papers on mathematics, history, education and philosophy. He was one of the major exponents of the Italian school of algebraic geometry.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

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