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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06899574254726157 2.985e-08  
a 2.777851425706936 1.1737e-08 au
q 2.586191503904317 8.414e-08 au
i 3.3625120891869 3.267e-06 deg
node 241.8306879665114 5.9925e-05 deg
peri 76.276304059 6.6614e-05 deg
M 8.256850605693719 2.7295e-05 deg
tp 2458961.714100002146
(2020-Apr-22.21410000)
0.00012824 TDB
period 1691.071410399376
4.63
1.0718e-05
2.934e-08
d
yr
n .2128827900384052 1.3493e-09 deg/d
Q 2.969511347509555 1.2547e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1445  
   data-arc span      25700 days (70.36 yr)  
   first obs. used      1950-06-21  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50965  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:14:13  

Additional Information
 Earth MOID = 1.57541 au 
 Jupiter MOID = 2.22173 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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