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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2836842719142462 1.5859e-07  
a 3.933764127678189 1.1711e-07 au
q 2.817817115235422 6.8181e-07 au
i 2.87809996229686 1.6157e-05 deg
node 26.89886736280401 0.00026811 deg
peri 12.71651337872233 0.00027479 deg
M 190.3250403335021 5.2904e-05 deg
tp 2460343.655065197603
(2024-Feb-03.15506520)
0.00046741 TDB
period 2849.777152866537
7.80
0.00012726
3.484e-07
d
yr
n .126325667127299 5.6412e-09 deg/d
Q 5.049711140120956 1.5033e-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 = 1.82594 au 
 Jupiter MOID = .415642 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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