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18727 Peacock (1998 KW3)
Classification: Main-belt Asteroid          SPK-ID: 2018727
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1097720460122075 6.3169e-08  
a 3.134044431976218 4.4751e-08 AU
q 2.790013962385022 2.1857e-07 AU
i 5.358386027555867 8.3999e-06 deg
node 179.568332986857 6.2641e-05 deg
peri 74.22861881739303 7.4046e-05 deg
M 297.7294569602177 4.2093e-05 deg
tp 2457151.038967441355
(2015-May-08.53896744)
0.00023844 JED
period 2026.544528417994
5.55
4.3405e-05
1.188e-07
d
yr
n .1776422846632594 3.8048e-09 deg/d
Q 3.478074901567414 4.9663e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      8480 days (23.22 yr)  
   first obs. used      1990-12-24  
   last obs. used      2014-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57252  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:10:50  

Additional Information
 Earth MOID = 1.7818 AU 
 T_jup = 3.196 
[ 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 13.3 mag n/a MPO257001  

18727 Peacock           Discovered 1998 May 22 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Anthony Peacock (b. 1950) was project scientist for the ESA Exosat and XMM-Newton missions. A leading expert on detectors for use in high-energy astrophysics, he has also developed the S-CAM, a cryogenic camera having an ultrafast photon-counting detector, for groundbased optical astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070926/MPCPages.arcLast Updated: 2007-09-30

[ show close-approach data ]
Alternate Designations
 1998 KW3 = 1994 TW4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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