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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 ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475125403457659 3.4089e-08  
a 2.585849495656718 1.1308e-08 au
q 2.204404267600578 9.1613e-08 au
i 14.64548340826773 3.542e-06 deg
node 82.36546123419575 1.9265e-05 deg
peri 351.5630021225133 2.6136e-05 deg
M 356.3071844078592 1.8484e-05 deg
tp 2459016.079675687291
(2020-Jun-15.57967569)
7.8028e-05 TDB
period 1518.809457846001
4.16
9.963e-06
2.728e-08
d
yr
n .2370277575901835 1.5548e-09 deg/d
Q 2.967294723712857 1.2976e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2202  
   data-arc span      14857 days (40.68 yr)  
   first obs. used      1980-03-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:09:50  

Additional Information
 Earth MOID = 1.22059 au 
 Jupiter MOID = 2.30523 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457041.5 (2015-Jan-19.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459658909286118 3.4067e-08  
q 2.209384793437036 9.1499e-08 au
tp 2457493.949167871456
(2016-Apr-15.44916787)
7.5237e-05 TDB
node 82.45007312528836 1.9304e-05 deg
peri 350.8966466413335 2.634e-05 deg
i 14.6274572346401 3.5382e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2202  
   data-arc span      14857 days (40.68 yr)  
   first obs. used      1980-03-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40925  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:09:50  

Additional Information
 Jupiter MOID = 2.30523 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.160533879881554E-15 -3.101037686846134E-15 -1.160778128680282E-12 -9.659535797375125E-15 -2.587840078123336E-13 -2.346228395326318E-15
q -3.101037686846134E-15 8.371984439879616E-15 3.265989259678363E-12 2.799566556767351E-14 7.224644790616917E-13 6.633584102015879E-15
tp -1.160778128680282E-12 3.265989259678363E-12 5.660577141573865E-9 2.202901759392921E-11 1.378803670197862E-9 5.024011583406859E-12
node -9.659535797375125E-15 2.799566556767351E-14 2.202901759392921E-11 3.726309213515815E-10 -3.551448445508689E-10 -2.099080660923396E-11
peri -2.587840078123336E-13 7.224644790616917E-13 1.378803670197862E-9 -3.551448445508689E-10 6.937842199227112E-10 2.14764036535814E-11
i -2.346228395326318E-15 6.633584102015879E-15 5.024011583406859E-12 -2.099080660923396E-11 2.14764036535814E-11 1.251870567586255E-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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