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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 | 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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2443303117037564 3.5991e-08  
a 3.237820215512548 1.5344e-08 au
q 2.446722593015644 1.2141e-07 au
i 1.862609120949555 4.0635e-06 deg
node 5.548619403293316 0.00010983 deg
peri 121.3820929205403 0.00011024 deg
M 324.2067825834944 8.5295e-06 deg
tp 2459412.080558878960
(2021-Jul-16.58055888)
5.0932e-05 TDB
period 2128.028903076519
5.83
1.5128e-05
4.142e-08
d
yr
n .169170634609118 1.2026e-09 deg/d
Q 4.028917838009453 1.9094e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1721  
   data-arc span      16810 days (46.02 yr)  
   first obs. used      1975-03-06  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:38:46  

Additional Information
 Earth MOID = 1.46251 au 
 Jupiter MOID = 1.04828 au 
 T_jup = 3.136 
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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 13.8   n/a MPO332925  
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

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