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12131 Echternach (2085 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2012131
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02530393558796648 3.7551e-08  
a 2.904705029070034 1.2757e-08 au
q 2.831204560112404 1.1432e-07 au
i 1.001460868683384 3.4296e-06 deg
node 277.8905251479134 0.00019956 deg
peri 199.2669088253421 0.00021143 deg
M 314.9443868242639 6.9349e-05 deg
tp 2459426.806946881170
(2021-Jul-31.30694688)
0.0003484 TDB
period 1808.220888248736
4.95
1.1912e-05
3.261e-08
d
yr
n .1990907207960972 1.3116e-09 deg/d
Q 2.978205498027665 1.308e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      22054 days (60.38 yr)  
   first obs. used      1960-09-24  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:09:40  

Additional Information
 Earth MOID = 1.84725 au 
 Jupiter MOID = 2.02749 au 
 T_jup = 3.285 
[ 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 14.4   n/a MPO309247  

12131 Echternach           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld at Leiden on Palomar Schmidt plates taken by T. Gehrels.
As assistant editor of the Dutch astronomical magazine Zenit, Dutch science writer Eddy Echternach (b. 1961) has been popularizing astronomy since the late 1980s. He is co-author of numerous books on astronomy and astronomical exercises for use in primary and high schools. The name was suggested by C. E. Koppeschaar.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

Alternate Designations
 2085 P-L = 1998 KX62 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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