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187448 (2005 WL120)
Classification: Main-belt Asteroid          SPK-ID: 2187448
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2157342221832915 5.7966e-08  
a 3.048788802911237 2.6934e-08 au
q 2.391060721914053 1.9172e-07 au
i 5.652391402196648 4.0325e-06 deg
node 73.67195290419545 4.7281e-05 deg
peri 315.6718697315202 4.8546e-05 deg
M 335.8184578845378 1.345e-05 deg
tp 2459331.108346300452
(2021-Apr-26.60834630)
7.3848e-05 TDB
period 1944.417127892675
5.32
2.5767e-05
7.055e-08
d
yr
n .1851454581611105 2.4535e-09 deg/d
Q 3.70651688390842 3.2745e-08 au
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      7751 days (21.22 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:28  

Additional Information
 Earth MOID = 1.39941 au 
 Jupiter MOID = 1.74988 au 
 T_jup = 3.194 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457700.5 (2016-Nov-08.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2222293890779145 5.8418e-08  
q 2.366590531097693 1.9407e-07 au
tp 2457384.333640438197
(2015-Dec-27.83364044)
5.4215e-05 TDB
node 73.76240804023405 4.7237e-05 deg
peri 315.169438173084 4.8362e-05 deg
i 5.664193659700212 4.0402e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      7751 days (21.22 yr)  
   first obs. used      1999-09-07  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:28  

Additional Information
 Jupiter MOID = 1.74988 au 
 T_jup = 3.194 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.412644584903492E-15 -1.130331950318425E-14 -1.404914635517307E-12 -4.126544757473026E-15 -2.003065362643135E-13 -5.996220614794001E-15
q -1.130331950318425E-14 3.766242055364055E-14 4.791162590409673E-12 1.322430389219048E-14 6.964739635362759E-13 2.050706630652045E-14
tp -1.404914635517307E-12 4.791162590409673E-12 2.939237950586681E-9 -4.568606535220663E-12 5.871062827356867E-10 4.84940934115398E-12
node -4.126544757473026E-15 1.322430389219048E-14 -4.568606535220663E-12 2.231376820280108E-9 -2.221424220366735E-9 -1.306395483480896E-11
peri -2.003065362643135E-13 6.964739635362759E-13 5.871062827356867E-10 -2.221424220366735E-9 2.338897050751094E-9 1.385339452857877E-11
i -5.996220614794001E-15 2.050706630652045E-14 4.84940934115398E-12 -1.306395483480896E-11 1.385339452857877E-11 1.632349519853007E-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 15.46   n/a E2021B55  
diameter diameter 4.671 km 0.626 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.056   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

187448 (2005 WL120)          Discovered 2005-Nov-29 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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