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181869 (1999 CA129)
Classification: Main-belt Asteroid          SPK-ID: 2181869
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1496526607462344 4.0636e-08  
a 2.625683489061107 1.2249e-08 au
q 2.232742968645656 1.0846e-07 au
i 12.41479170212828 3.9525e-06 deg
node 57.99608915044899 2.0818e-05 deg
peri 71.41212740871551 2.9245e-05 deg
M 115.8797466939496 1.68e-05 deg
tp 2458896.273122273158
(2020-Feb-16.77312227)
7.3139e-05 TDB
period 1554.039261556873
4.25
1.0875e-05
2.977e-08
d
yr
n .231654378950081 1.6211e-09 deg/d
Q 3.018624009476558 1.4082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1999-02-11  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:25:03  

Additional Information
 Earth MOID = 1.28401 au 
 Jupiter MOID = 2.16863 au 
 T_jup = 3.354 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457507.5 (2016-Apr-29.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1503500545908499 4.0941e-08  
q 2.232015935978495 1.0977e-07 au
tp 2457343.929288077213
(2015-Nov-17.42928808)
7.5434e-05 TDB
node 58.01697016469594 2.0827e-05 deg
peri 71.89630040016425 2.9091e-05 deg
i 12.41151597156477 3.9512e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      8151 days (22.32 yr)  
   first obs. used      1999-02-11  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49785  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 19:25:03  

Additional Information
 Jupiter MOID = 2.16863 au 
 T_jup = 3.354 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.676144608629829E-15 -4.473523318902143E-15 1.206546725369488E-12 1.815736043414226E-14 3.357555529167235E-13 -9.069623667664081E-15
q -4.473523318902143E-15 1.204972983331433E-14 -3.468751010576908E-12 -4.81196084818187E-14 -9.626282492489514E-13 2.484022203649212E-14
tp 1.206546725369488E-12 -3.468751010576908E-12 5.690313289426208E-9 6.382429008512867E-12 1.553595064538027E-9 -7.878404047951837E-12
node 1.815736043414226E-14 -4.81196084818187E-14 6.382429008512867E-12 4.337467434907502E-10 -4.213501868163357E-10 -1.134028777785062E-11
peri 3.357555529167235E-13 -9.626282492489514E-13 1.553595064538027E-9 -4.213501868163357E-10 8.462700073871875E-10 8.818456131296589E-12
i -9.069623667664081E-15 2.484022203649212E-14 -7.878404047951837E-12 -1.134028777785062E-11 8.818456131296589E-12 1.561200854036984E-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 15.70   n/a E2021B55  

181869 (1999 CA129)          Discovered 1999-Feb-11 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1999 CA129 = 2003 AV77 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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