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11266 Macke (1981 ES41)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011266
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2444432578416264 3.5981e-08  
a 3.238478703398403 1.5389e-08 au
q 2.446854418688971 1.2142e-07 au
i 1.86260519779671 4.0599e-06 deg
node 5.546198137041834 0.00010982 deg
peri 121.3501701735546 0.00011023 deg
M 357.385679828912 8.5961e-06 deg
tp 2459411.958461476617
(2021-Jul-16.45846148)
5.0868e-05 TDB
period 2128.678114152359
5.83
1.5173e-05
4.154e-08
d
yr
n .1691190404066104 1.2055e-09 deg/d
Q 4.030102988107835 1.9151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1729  
   data-arc span      16831 days (46.08 yr)  
   first obs. used      1975-03-06  
   last obs. used      2021-04-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50917  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 16:32:13  

Additional Information
 Earth MOID = 1.46326 au 
 Jupiter MOID = 1.04718 au 
 T_jup = 3.136 
[ 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 13.83   n/a MPCxxxxx  
diameter diameter 7.080 km 0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.112   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11266 Macke           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring.
Robert J. Macke SJ (b. 1974) is a research scientist and meteorite curator at the Vatican Observatory, whose fundamental contributions include studying the relationship between shock state and porosity in carbonaceous chondrites.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-03-12Last Updated: 2017-04-19

Alternate Designations
 1981 ES41 = 1975 EQ1 = 1999 JD31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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