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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1476460152310954 1.7017e-08  
a 2.586189419930742 8.7895e-09 au
q 2.20434885744515 4.3347e-08 au
i 14.64450633675044 5.5579e-07 deg
node 82.364105711739 3.5155e-06 deg
peri 351.5441201629855 4.7387e-06 deg
M 43.71765172323943 4.4513e-06 deg
tp 2459016.022566457284
(2020-Jun-15.52256646)
1.853e-05 TDB
period 1519.10895159253
4.16
7.7443e-06
2.12e-08
d
yr
n .2369810273467222 1.2081e-09 deg/d
Q 2.968029982416335 1.0087e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2574  
   data-arc span      14984 days (41.02 yr)  
   first obs. used      1980-03-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:42:04  

Additional Information
 Earth MOID = 1.2201 au 
 Jupiter MOID = 2.305 au 
 T_jup = 3.361 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457478.5 (2016-Mar-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1457342604050944 1.6917e-08  
q 2.209430052693724 4.2985e-08 au
tp 2457494.157972113344
(2016-Apr-15.65797211)
1.8629e-05 TDB
node 82.44017291836884 3.5218e-06 deg
peri 350.9590626051156 4.8043e-06 deg
i 14.62772945037161 5.5576e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2574  
   data-arc span      14984 days (41.02 yr)  
   first obs. used      1980-03-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 20:42:04  

Additional Information
 Jupiter MOID = 2.305 au 
 T_jup = 3.361 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.861857476225939E-16 -7.163125933087616E-16 -1.429429656199959E-13 5.480383966217516E-15 -1.88978022373522E-14 -2.18025258307102E-15
q -7.163125933087616E-16 1.847687610561579E-15 3.437760906832458E-13 -1.288959123836925E-14 4.048662895003852E-14 5.393932539983277E-15
tp -1.429429656199959E-13 3.437760906832458E-13 3.470491072336943E-10 1.868871630358716E-11 6.42038240942565E-11 -5.855657312064852E-13
node 5.480383966217516E-15 -1.288959123836925E-14 1.868871630358716E-11 1.24028911130189E-11 -6.73249210152329E-12 -1.628231451970822E-12
peri -1.88978022373522E-14 4.048662895003852E-14 6.42038240942565E-11 -6.73249210152329E-12 2.308095030875599E-11 1.222645117570883E-12
i -2.18025258307102E-15 5.393932539983277E-15 -5.855657312064852E-13 -1.628231451970822E-12 1.222645117570883E-12 3.08867293948057E-13

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.54   n/a MPCxxxxx  
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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