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168638 Waltersiegmund (2000 CH149)
Classification: Main-belt Asteroid          SPK-ID: 2168638
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09306335178645891 4.8389e-08  
a 2.782066189920941 2.3031e-08 au
q 2.523157785395115 1.4079e-07 au
i 2.402175904157267 5.8018e-06 deg
node 349.2838663208115 0.0001231 deg
peri 290.7529643241084 0.00012786 deg
M 34.05156648668674 3.229e-05 deg
tp 2458840.181290113512
(2019-Dec-22.68129011)
0.00015195 TDB
period 1694.92160020599
4.64
2.1047e-05
5.762e-08
d
yr
n .2123992047515637 2.6375e-09 deg/d
Q 3.040974594446767 2.5175e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      7082 days (19.39 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56006  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 15:32:46  

Additional Information
 Earth MOID = 1.508 au 
 Jupiter MOID = 2.06828 au 
 T_jup = 3.325 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457025.5 (2015-Jan-03.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09209425321232417 4.8592e-08  
q 2.525473532435111 1.4104e-07 au
tp 2457150.002467017508
(2015-May-07.50246702)
0.00015452 TDB
node 349.4079589726062 0.00012312 deg
peri 291.6887043732809 0.00012795 deg
i 2.402260267462545 5.801e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      7082 days (19.39 yr)  
   first obs. used      2000-02-12  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56006  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 15:32:46  

Additional Information
 Jupiter MOID = 2.06828 au 
 T_jup = 3.325 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.361150033633742E-15 -6.783765674198741E-15 1.326722041874861E-12 -8.617217311826083E-15 3.61523813710561E-13 -1.281120991339402E-15
q -6.783765674198741E-15 1.98935905840613E-14 -4.072396927710724E-12 2.600288065050399E-14 -1.107076588903099E-12 4.443531798039541E-15
tp 1.326722041874861E-12 -4.072396927710724E-12 2.387751152451642E-8 -6.041387973628427E-11 5.410041120430996E-9 1.841003145415935E-12
node -8.617217311826083E-15 2.600288065050399E-14 -6.041387973628427E-11 1.515754654920583E-8 -1.515702413396616E-8 1.59736286006353E-11
peri 3.61523813710561E-13 -1.107076588903099E-12 5.410041120430996E-9 -1.515702413396616E-8 1.637205324269971E-8 -1.558161274676878E-11
i -1.281120991339402E-15 4.443531798039541E-15 1.841003145415935E-12 1.59736286006353E-11 -1.558161274676878E-11 3.365102497950826E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO436842  

168638 Waltersiegmund           Discovered 2000 Feb. 12 by the Sloan Digital Sky Survey at Apache Point.
Walter Siegmund (b. 1950) is an American engineer, the Project Engineer for the Sloan Digital Sky Survey, and a designer of the telescope and its optical fiber positioning system.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20130127/MPCPages.arcLast Updated: 2013-01-31

Alternate Designations
 2000 CH149 = 2006 QT84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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