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JPL Small-Body Database Browser
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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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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06999758619300234 3.9015e-08  
a 2.778919731658404 1.5742e-08 au
q 2.58440205821821 1.1203e-07 au
i 3.364359851312718 4.1671e-06 deg
node 241.8611977377526 7.3338e-05 deg
peri 76.79116719441707 7.9625e-05 deg
M 282.7055764955766 3.0581e-05 deg
tp 2458963.793888646527
(2020-Apr-24.29388865)
0.00014436 TDB
period 1692.047032413212
4.63
1.4377e-05
3.936e-08
d
yr
n .2127600433698139 1.8078e-09 deg/d
Q 2.973437405098599 1.6844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1025  
   data-arc span      25159 days (68.88 yr)  
   first obs. used      1950-06-21  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54914  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:37:03  

Additional Information
 Earth MOID = 1.57288 au 
 Jupiter MOID = 2.2213 au 
 T_jup = 3.328 
[ 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 14.5   n/a MPO395181  
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

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