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11836 Eileen (1986 CB)
Classification: Mars-crossing Asteroid          SPK-ID: 2011836
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 .3503431575007219 1.2887e-08  
a 2.347192879396135 7.7913e-09 au
q 1.524869914765282 3.2076e-08 au
i 22.48547903500687 5.378e-07 deg
node 131.6771598065839 2.0865e-06 deg
peri 289.8336499874374 2.8747e-06 deg
M 298.4175467370279 3.6689e-06 deg
tp 2459425.186035070351
(2021-Jul-29.68603507)
1.418e-05 TDB
period 1313.474347634698
3.60
6.54e-06
1.791e-08
d
yr
n .274082246561029 1.3647e-09 deg/d
Q 3.169515844026988 1.0521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1599  
   data-arc span      12642 days (34.61 yr)  
   first obs. used      1986-02-05  
   last obs. used      2020-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46407  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:49:38  

Additional Information
 Earth MOID = .671105 au 
 Jupiter MOID = 2.47395 au 
 T_jup = 3.379 
[ 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 13.69   n/a E2021B10  
rotation period rot_per 8.810 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Higgins, D.J. (2011) http://www.david-higgins.com/Astronomy/asteroid/lightcurves.htm]

11836 Eileen           Discovered 1986 Feb. 5 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Eileen Collins (b. 1956), astronaut, became in Feb. 1995 the first woman to pilot a shuttle mission. In July 1999 she became NASA's first female shuttle commander. Her five-day mission launched the Chandra X-ray Telescope into orbit.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1986 CB = 1988 PJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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