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11456 Cotto-Figueroa (1981 EK9)
Classification: Main-belt Asteroid          SPK-ID: 2011456
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08197582345460323 3.4919e-08  
a 3.066326308488205 1.8069e-08 au
q 2.814961684369371 1.1269e-07 au
i 2.89079841344165 3.5333e-06 deg
node 288.2057159151263 8.8681e-05 deg
peri 28.90038158061216 9.2514e-05 deg
M 42.19309854875963 2.7247e-05 deg
tp 2459166.639207414639
(2020-Nov-13.13920741)
0.00014802 TDB
period 1961.218497264467
5.37
1.7335e-05
4.746e-08
d
yr
n .1835593537905811 1.6225e-09 deg/d
Q 3.31769093260704 1.955e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1420  
   data-arc span      14791 days (40.50 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:33:52  

Additional Information
 Earth MOID = 1.80122 au 
 Jupiter MOID = 1.911 au 
 T_jup = 3.225 
[ show covariance matrix ]

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 13.86   n/a E2021B10  
diameter diameter 11.196 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11456 Cotto-Figueroa           Discovered 1981 Mar. 1 by S. J. Bus at Siding Spring.
Desiree Cotto-Figueroa (b. 1984) is a professor at the University of Puerto Rico, Humacao whose research includes shape and spin evolution of near-Earth asteroids in response to re-radiation of solar flux.
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 EK9 = 1998 KN48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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