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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103434850652671 5.2854e-08  
a 3.13579787039072 3.5309e-08 au
q 2.789783004911565 1.8108e-07 au
i 5.358552230728096 7.1748e-06 deg
node 179.5581514398601 5.5133e-05 deg
peri 74.33192690087189 6.4445e-05 deg
M 79.69885142107478 3.2315e-05 deg
tp 2457151.475456546597
(2015-May-08.97545655)
0.00018293 JED
period 2028.245486113494
5.55
3.4257e-05
9.379e-08
d
yr
n .1774933076221601 2.9979e-09 deg/d
Q 3.481812735869874 3.9205e-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 = 1.78151 au 
 Jupiter MOID = 1.56893 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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