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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3508225552437533 4.4624e-08  
a 2.347689802007316 7.8525e-09 au
q 1.524067266747408 1.0586e-07 au
i 22.47656150570694 3.5623e-06 deg
node 131.6861837167454 1.4298e-05 deg
peri 289.7930400389401 1.4878e-05 deg
M 243.71017265023 5.6446e-06 deg
tp 2459424.922815503264
(2021-Jul-29.42281550)
2.1481e-05 TDB
period 1313.891481854343
3.60
6.592e-06
1.805e-08
d
yr
n .2739952309394067 1.3747e-09 deg/d
Q 3.171312337267224 1.0607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1531  
   data-arc span      12601 days (34.50 yr)  
   first obs. used      1986-02-05  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46219  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:28:14  

Additional Information
 Earth MOID = .67066 au 
 Jupiter MOID = 2.47285 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 13.7   n/a MPO435812  
rotation period rot_per 8.810 h n/a LCDB (Rev. 2019-August); 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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