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3041 Webb (1980 GD)
Classification: Main-belt Asteroid          SPK-ID: 2003041
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475125405933482 3.431e-08  
a 2.585849495572804 1.1379e-08 au
q 2.204404266888832 9.2289e-08 au
i 14.64548334821188 3.5495e-06 deg
node 82.36546165071741 1.9339e-05 deg
peri 351.5630016363605 2.6224e-05 deg
M 356.3071845221678 1.8588e-05 deg
tp 2459016.079675204274
(2020-Jun-15.57967520)
7.8468e-05 TDB
period 1518.80945777207
4.16
1.0025e-05
2.745e-08
d
yr
n .2370277576017213 1.5645e-09 deg/d
Q 2.967294724256776 1.3057e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2184  
   data-arc span      14840 days (40.63 yr)  
   first obs. used      1980-03-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:03:43  

Additional Information
 Earth MOID = 1.22059 au 
 Jupiter MOID = 2.30523 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457031.5 (2015-Jan-09.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459685810883518 3.4291e-08  
q 2.209383711046583 9.2183e-08 au
tp 2457493.942567448124
(2016-Apr-15.44256745)
7.5583e-05 TDB
node 82.45026269409546 1.9377e-05 deg
peri 350.8949711985147 2.6426e-05 deg
i 14.62750063898354 3.5456e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2184  
   data-arc span      14840 days (40.63 yr)  
   first obs. used      1980-03-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:03:43  

Additional Information
 Jupiter MOID = 2.30523 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.175850169469871E-15 -3.144905183811375E-15 -1.189105513036639E-12 -1.002120612190642E-14 -2.644428900805293E-13 -2.368042353045308E-15
q -3.144905183811375E-15 8.497613560029128E-15 3.347142186776433E-12 2.905970285316835E-14 7.386548687296474E-13 6.693068216919904E-15
tp -1.189105513036639E-12 3.347142186776433E-12 5.71275451845401E-9 2.305087427801916E-11 1.388866532228522E-9 5.015694040106088E-12
node -1.002120612190642E-14 2.905970285316835E-14 2.305087427801916E-11 3.754805795376834E-10 -3.576714198703719E-10 -2.137686463740169E-11
peri -2.644428900805293E-13 7.386548687296474E-13 1.388866532228522E-9 -3.576714198703719E-10 6.983450943796989E-10 2.184620205082476E-11
i -2.368042353045308E-15 6.693068216919904E-15 5.015694040106088E-12 -2.137686463740169E-11 2.184620205082476E-11 1.2571372532506E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5   n/a MPO502182  
diameter diameter 8.221 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.314   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3041 Webb (1980 GD)          Discovered 1980-Apr-15 by Bowell, E. at Flagstaff (AM)
Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory.
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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