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154191 (2002 GP129)
Classification: Main-belt Asteroid          SPK-ID: 2154191
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04249493355800096 4.4081e-08  
a 2.909201992130311 2.5723e-08 au
q 2.785575646767929 1.3429e-07 au
i 1.769378055719864 5.1158e-06 deg
node 330.7157683758975 0.00017243 deg
peri 175.6422516613211 0.00018486 deg
M 284.7626691396723 6.755e-05 deg
tp 2459379.282687028722
(2021-Jun-13.78268703)
0.00034153 TDB
period 1812.421649878635
4.96
2.4038e-05
6.581e-08
d
yr
n .1986292759326212 2.6344e-09 deg/d
Q 3.032828337492692 2.6816e-08 au
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      9240 days (25.30 yr)  
   first obs. used      1994-10-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:52  

Additional Information
 Earth MOID = 1.79703 au 
 Jupiter MOID = 1.95361 au 
 T_jup = 3.282 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457149.5 (2015-May-07.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04108365816157301 4.5028e-08  
q 2.788761521083809 1.365e-07 au
tp 2457581.419807827840
(2016-Jul-11.91980783)
0.000341 TDB
node 330.8941339418976 0.0001718 deg
peri 178.4275783780461 0.00018464 deg
i 1.773618244376295 5.1235e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      292  
   data-arc span      9240 days (25.30 yr)  
   first obs. used      1994-10-11  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 09:30:52  

Additional Information
 Jupiter MOID = 1.95361 au 
 T_jup = 3.282 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.027525611405056E-15 -6.047576798577062E-15 3.131561050406773E-12 -7.559942630793844E-15 6.567178932364994E-13 -2.436568393616277E-17
q -6.047576798577062E-15 1.863305470559062E-14 -7.223668900318056E-12 2.048409180134226E-14 -1.565170656130324E-12 3.091068640209419E-16
tp 3.131561050406773E-12 -7.223668900318056E-12 1.162780096232522E-7 -3.454197010246754E-12 2.310835661870144E-8 1.118065488982239E-12
node -7.559942630793844E-15 2.048409180134226E-14 -3.454197010246754E-12 2.951390119425783E-8 -2.949986912214348E-8 2.234496389302458E-10
peri 6.567178932364994E-13 -1.565170656130324E-12 2.310835661870144E-8 -2.949986912214348E-8 3.409180254578529E-8 -2.231337106449069E-10
i -2.436568393616277E-17 3.091068640209419E-16 1.118065488982239E-12 2.234496389302458E-10 -2.231337106449069E-10 2.625014424509107E-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 16.0   n/a MPO454000  

154191 (2002 GP129)          Discovered 2002-Apr-12 by LINEAR at Socorro
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

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Alternate Designations
 2002 GP129 = 1997 GS13 = 2004 TH26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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