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18567 Segenthau (1997 SS4)
Classification: Main-belt Asteroid          SPK-ID: 2018567
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0686755659473125 2.9737e-08  
a 2.776943057661553 1.1573e-08 au
q 2.586234921573185 8.3646e-08 au
i 3.362644220148818 3.2484e-06 deg
node 241.8226099793059 5.9656e-05 deg
peri 76.23994601703617 6.6419e-05 deg
M 50.90173431472529 2.7359e-05 deg
tp 2458961.510419142169
(2020-Apr-22.01041914)
0.00012863 TDB
period 1690.241997980994
4.63
1.0566e-05
2.893e-08
d
yr
n .2129872529673399 1.3315e-09 deg/d
Q 2.96765119374992 1.2368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1473  
   data-arc span      25745 days (70.49 yr)  
   first obs. used      1950-06-21  
   last obs. used      2020-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50635  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:38:52  

Additional Information
 Earth MOID = 1.57347 au 
 Jupiter MOID = 2.22171 au 
 T_jup = 3.329 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.58   n/a E2021B10  
diameter diameter 8.636 km 3.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.038   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

18567 Segenthau           Discovered 1997 Sept. 27 at the Starkenburg Observatory, Heppenheim.
Segenthau, located in the Banat region south of the Maros river, is a small village founded in 1771 by German colonialists. It is also the childhood home of Reiner Michael Stoss, discoverer of this minor planet.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

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