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220256 (2002 XK118)
Classification: Main-belt Asteroid          SPK-ID: 2220256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2309149226752166 6.7327e-08  
a 2.408385526980978 1.8562e-08 au
q 1.852253369246054 1.5855e-07 au
i 2.970047257512674 5.529e-06 deg
node 145.1897801227529 0.00012381 deg
peri 215.7196056573873 0.00012444 deg
M 30.64357593068451 1.5256e-05 deg
tp 2459280.295115668177
(2021-Mar-06.79511567)
5.6975e-05 TDB
period 1365.172212736656
3.74
1.5782e-05
4.321e-08
d
yr
n .2637029941287302 3.0486e-09 deg/d
Q 2.964517684715901 2.2848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      186  
   data-arc span      6004 days (16.44 yr)  
   first obs. used      2002-11-16  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:10:41  

Additional Information
 Earth MOID = .849256 au 
 Jupiter MOID = 2.49071 au 
 T_jup = 3.483 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457186.5 (2015-Jun-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2306350125381079 6.6944e-08  
q 1.853861077740618 1.5749e-07 au
tp 2456550.346603263927
(2013-Sep-14.84660326)
4.4449e-05 TDB
node 145.2179751554333 0.00012387 deg
peri 215.944809918177 0.00012451 deg
i 2.968490209289258 5.5271e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      186  
   data-arc span      6004 days (16.44 yr)  
   first obs. used      2002-11-16  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59041  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:10:41  

Additional Information
 Jupiter MOID = 2.49071 au 
 T_jup = 3.483 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.481520200388336E-15 -1.05030093953329E-14 6.845279438589354E-13 2.292545646869036E-14 3.320333467568661E-15 -5.77965100819798E-15
q -1.05030093953329E-14 2.48018171416821E-14 -1.589938643779318E-12 -5.543323464404742E-14 2.069939163531292E-14 1.359602700270885E-14
tp 6.845279438589354E-13 -1.589938643779318E-12 1.975753469293484E-9 -2.0313588967848E-11 5.832332023436882E-10 -3.590224029516875E-12
node 2.292545646869036E-14 -5.543323464404742E-14 -2.0313588967848E-11 1.534328916605858E-8 -1.53293755736244E-8 8.0796637961807E-11
peri 3.320333467568661E-15 2.069939163531292E-14 5.832332023436882E-10 -1.53293755736244E-8 1.550312446782158E-8 -8.15587737227623E-11
i -5.77965100819798E-15 1.359602700270885E-14 -3.590224029516875E-12 8.0796637961807E-11 -8.15587737227623E-11 3.054911826590296E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO433444  

220256 (2002 XK118)          Discovered 2002-Dec-10 by NEAT at Palomar
Reference: 20091004/Numbers.arcLast Updated: 2009-10-06

[ show close-approach data ]
Alternate Designations
 2002 XK118 = 2006 XJ30 = 2008 GS18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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