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JPL Small-Body Database Browser
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441667 (2008 WR138)
Classification: Outer Main-belt Asteroid          SPK-ID: 2441667
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2837780975410828 1.5739e-07  
a 3.933832959026129 1.1564e-07 au
q 2.817497325869285 6.7533e-07 au
i 2.878129015725155 1.6158e-05 deg
node 26.89865067331871 0.00026811 deg
peri 12.80584406373982 0.00027479 deg
M 139.6396950871499 5.1252e-05 deg
tp 2457495.076507580818
(2016-Apr-16.57650758)
0.00037039 TDB
period 2849.851949494313
7.80
0.00012566
3.44e-07
d
yr
n .126322351609837 5.5699e-09 deg/d
Q 5.050168592182972 1.4845e-07 au
  Orbit Determination Parameters
   # obs. used (total)      93  
   data-arc span      6310 days (17.28 yr)  
   first obs. used      2000-11-26  
   last obs. used      2018-03-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69152  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:59:36  

Additional Information
 Earth MOID = 1.82507 au 
 Jupiter MOID = .413035 au 
 T_jup = 2.988 
[ show covariance matrix ]

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 15.8   n/a MPO437716  

441667 (2008 WR138)          Discovered 2008-Nov-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

[ show close-approach data ]
Alternate Designations
 2008 WR138 = 2000 WP174 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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