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190617 Alexandergerst (2000 WT9)
Classification: Main-belt Asteroid          SPK-ID: 2190617
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2899835731457027 5.4301e-08  
a 2.565444384883754 1.5314e-08 au
q 1.821507655448584 1.4631e-07 au
i 4.484831867818879 4.2345e-06 deg
node 236.8131079517592 7.3602e-05 deg
peri 165.687446081768 7.5658e-05 deg
M 328.4919926965688 2.2061e-05 deg
tp 2459331.859283190098
(2021-Apr-27.35928319)
9.3028e-05 TDB
period 1500.867430079771
4.11
1.3439e-05
3.679e-08
d
yr
n .2398612914005775 2.1477e-09 deg/d
Q 3.309381114318925 1.9755e-08 au
  Orbit Determination Parameters
   # obs. used (total)      371  
   data-arc span      7369 days (20.18 yr)  
   first obs. used      2000-09-30  
   last obs. used      2020-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57816  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 12:03:07  

Additional Information
 Earth MOID = .829796 au 
 Jupiter MOID = 2.11097 au 
 T_jup = 3.368 
[ 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 16.47   n/a E2021B55  

190617 Alexandergerst           Discovered 2000 Nov. 19 by J. Kandler at Drebach.
Geophysicist Alexander Gerst (b. 1976) was the third German astronaut onboard the International Space Station. He studied at the University of Karlsruhe, where he received a masters degree in physics and also at Victoria University of Wellington, where he was awarded a Master of Science.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2015-03-05Last Updated: 2015-03-09

[ show close-approach data ]
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