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331105 Giselher (2009 XG9)
Classification: Main-belt Asteroid          SPK-ID: 2331105
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1288140536436187 4.3088e-08  
a 2.343547561790738 1.4743e-08 au
q 2.041665700449855 9.9379e-08 au
i 2.866377678704625 7.0431e-06 deg
node 263.2488724479666 0.00011498 deg
peri 131.1782605413632 0.00011898 deg
M 113.285831163106 3.077e-05 deg
tp 2458984.134636934176
(2020-May-14.63463693)
0.00011113 TDB
period 1310.415690819799
3.59
1.2366e-05
3.386e-08
d
yr
n .2747219851853142 2.5924e-09 deg/d
Q 2.645429423131622 1.6642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      189  
   data-arc span      9181 days (25.14 yr)  
   first obs. used      1995-12-26  
   last obs. used      2021-02-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61306  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 07:42:18  

Additional Information
 Earth MOID = 1.04892 au 
 Jupiter MOID = 2.75907 au 
 T_jup = 3.550 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.55   n/a MPCxxxxx  

331105 Giselher           Discovered 2009 Dec. 13 by R. Kracht at Sonoita (IRO).
Dietrich Giselher Kracht (b. 1944) is the elder brother of the discoverer, who introduced him to astronomy at the observatory of the Olbers-Gesellschaft in Bremen.
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 2017-03-12Last Updated: 2017-04-19

Alternate Designations
 2009 XG9 = 2005 SA293 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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