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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1102108349213107 5.2867e-08  
a 3.135325021347232 3.5205e-08 au
q 2.789778232994877 1.8102e-07 au
i 5.35835101201377 7.1747e-06 deg
node 179.5594830173108 5.514e-05 deg
peri 74.28320748951047 6.4472e-05 deg
M 44.25380191091274 3.2413e-05 deg
tp 2457151.229797699340
(2015-May-08.72979770)
0.0001831 JED
period 2027.7867426823
5.55
3.4154e-05
9.351e-08
d
yr
n .1775334616912437 2.9902e-09 deg/d
Q 3.480871809699587 3.9085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      871  
   data-arc span      8968 days (24.55 yr)  
   first obs. used      1990-12-24  
   last obs. used      2015-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55324  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:51:01  

Additional Information
 Earth MOID = 1.7805 au 
 Jupiter MOID = 1.56873 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 13.4 mag n/a MPO344451  

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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