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9950 ESA (1990 VB)
Classification: Amor [NEO]          SPK-ID: 2009950
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 113 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5302347814664572 3.8303e-08  
a 2.441819819433029 6.1898e-09 AU
q 1.147082021095493 9.3345e-08 AU
i 14.58364760439445 7.8939e-06 deg
node 253.8500689746855 1.4631e-05 deg
peri 103.2126531925479 2.1488e-05 deg
M 67.44179124865336 5.3786e-06 deg
tp 2456539.406870161233
(2013-Sep-03.90687016)
2.0878e-05 JED
period 1393.698551027632
3.82
5.2994e-06
1.451e-08
d
yr
n .2583054992304877 9.8218e-10 deg/d
Q 3.736557617770565 9.4719e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      8532 days (23.36 yr)  
   first obs. used      1990-11-08  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54927  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:57:39  

Additional Information
 Earth MOID = .286376 AU 
 T_jup = 3.255 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2 mag n/a MPO279621  
rotation period rot_per 6.712 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Warner, B.D. (2013) http://www.minorplanetobserver.com/PDO/PDOLig htcurves.htm]

9950 ESA           Discovered 1990 Nov. 8 by C. Pollas at Caussols.
ESA is an acronym for the European Space Agency. This agency, formed in 1974, manages impressive scientific missions devoted to the exploration of the solar system and the advancement of astronomy. The name was suggested by J.-L. Heudier.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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