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172893 (2005 GE9)
Classification: Main-belt Asteroid          SPK-ID: 2172893
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0692781693416646 5.4063e-08  
a 2.68528621839584 2.5691e-08 au
q 2.499254505026975 1.4574e-07 au
i 15.64437507603821 5.8851e-06 deg
node 90.35621214510797 2.0359e-05 deg
peri 171.6670915997546 4.5905e-05 deg
M 118.1865819818014 3.9552e-05 deg
tp 2458472.845102671090
(2018-Dec-20.34510267)
0.00017636 TDB
period 1607.253208047401
4.40
2.3066e-05
6.315e-08
d
yr
n .2239846205921419 3.2144e-09 deg/d
Q 2.871317931764705 2.7471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1996-05-22  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58192  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:08:14  

Additional Information
 Earth MOID = 1.48412 au 
 Jupiter MOID = 2.21705 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456761.5 (2014-Apr-14.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06923445755473523 5.351e-08  
q 2.499999854169161 1.4445e-07 au
tp 2456870.651562942553
(2014-Aug-01.15156294)
0.00018048 TDB
node 90.39997282376314 2.0379e-05 deg
peri 172.9744744170093 4.6417e-05 deg
i 15.63609098462229 5.8829e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      364  
   data-arc span      8056 days (22.06 yr)  
   first obs. used      1996-05-22  
   last obs. used      2018-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58192  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 07:08:14  

Additional Information
 Jupiter MOID = 2.21705 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.863365646795221E-15 -7.621495665272449E-15 -3.449195335936355E-12 -2.076559727872981E-14 -7.450022652336853E-13 -8.727078464778475E-16
q -7.621495665272449E-15 2.086504347788934E-14 8.695793320451232E-12 5.677200208858089E-14 1.856230576016399E-12 3.964279032160056E-15
tp -3.449195335936355E-12 8.695793320451232E-12 3.25729077113027E-8 1.026153644329506E-11 7.560445431293959E-9 5.571511353335215E-12
node -2.076559727872981E-14 5.677200208858089E-14 1.026153644329506E-11 4.152991832057827E-10 -3.973780112043611E-10 -4.633795446320501E-11
peri -7.450022652336853E-13 1.856230576016399E-12 7.560445431293959E-9 -3.973780112043611E-10 2.154522449155467E-9 4.580641044813796E-11
i -8.727078464778475E-16 3.964279032160056E-15 5.571511353335215E-12 -4.633795446320501E-11 4.580641044813796E-11 3.460813862501478E-11

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 15.5   n/a MPO449896  
diameter diameter 2.667 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172893 (2005 GE9)          Discovered 2005-Apr-02 by Bickel, W. at Bergisch Gladbach
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

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