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4991 Hansuess (1981 EU29)
Classification: Main-belt Asteroid          SPK-ID: 2004991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .102794737276017 2.6046e-08  
a 2.999645096700156 1.4229e-08 au
q 2.691297367063571 7.8269e-08 au
i 10.48448383347876 7.3868e-07 deg
node 343.3986635176381 1.7369e-06 deg
peri 6.362299034828085 1.1469e-05 deg
M 112.6656188570609 1.0498e-05 deg
tp 2458802.628964919061
(2019-Nov-15.12896492)
5.3813e-05 TDB
period 1897.593736207834
5.20
1.3502e-05
3.697e-08
d
yr
n .1897139483182669 1.3499e-09 deg/d
Q 3.30799282633674 1.5692e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2288  
   data-arc span      14703 days (40.25 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42192  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:35:50  

Additional Information
 Earth MOID = 1.68425 au 
 Jupiter MOID = 2.10489 au 
 T_jup = 3.220 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.87   n/a E2021B10  

4991 Hansuess           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Hans Suess (1909-1993) was one of the pioneers of cosmochemistry. He proposed that the relative abundance of each element depends on its mass and that patterns in elemental abundances were caused by a combination of nuclear properties and the mechanisms by which heavy elements are created in stars.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20001013/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1981 EU29 = 1988 RA10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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