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JPL Small-Body Database Browser
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2938 Hopi (1980 LB)
Classification: Main-belt Asteroid          SPK-ID: 2002938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3284657784153605 4.1447e-08  
a 3.153233158870779 1.7092e-08 au
q 2.117503974817163 1.3475e-07 au
i 41.43284364565031 4.6117e-06 deg
node 108.8679114689881 7.1169e-06 deg
peri 263.4074524243314 9.2138e-06 deg
M 304.0348740608002 8.3785e-06 deg
tp 2458918.441734257370
(2020-Mar-09.94173426)
4.8888e-05 TDB
period 2045.184789845751
5.60
1.6629e-05
4.553e-08
d
yr
n .1760232140329732 1.4312e-09 deg/d
Q 4.188962342924397 2.2706e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2511  
   data-arc span      14380 days (39.37 yr)  
   first obs. used      1980-06-11  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:21:17  

Additional Information
 Earth MOID = 1.42091 au 
 Jupiter MOID = 2.17501 au 
 T_jup = 2.753 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456572.5 (2013-Oct-07.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3296512506527504 4.1396e-08  
q 2.112567710059328 1.3487e-07 au
tp 2456873.597895707647
(2014-Aug-04.09789571)
4.2336e-05 TDB
node 109.0864536193201 7.1235e-06 deg
peri 263.1480509040406 9.2042e-06 deg
i 41.43516719917112 4.6115e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2511  
   data-arc span      14380 days (39.37 yr)  
   first obs. used      1980-06-11  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:21:17  

Additional Information
 Jupiter MOID = 2.17501 au 
 T_jup = 2.753 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.713640312330757E-15 -5.565535875539028E-15 -5.563580291287461E-14 -5.291718245832521E-15 2.680477457211117E-15 3.952984159763521E-15
q -5.565535875539028E-15 1.818983220631146E-14 2.930746469310903E-13 1.630922175324896E-14 2.582839332940381E-15 -1.236890012597256E-14
tp -5.563580291287461E-14 2.930746469310903E-13 1.792374495893461E-9 2.256150489933555E-12 2.851577341848577E-10 9.147698329944426E-13
node -5.291718245832521E-15 1.630922175324896E-14 2.256150489933555E-12 5.074360198889536E-11 -3.738919384871401E-11 -1.516805217063458E-12
peri 2.680477457211117E-15 2.582839332940381E-15 2.851577341848577E-10 -3.738919384871401E-11 8.471753490341126E-11 1.086949224551578E-12
i 3.952984159763521E-15 -1.236890012597256E-14 9.147698329944426E-13 -1.516805217063458E-12 1.086949224551578E-12 2.126590939593781E-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 11.6   n/a MPO452203  
diameter diameter 19.267 km 0.147 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.109   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

2938 Hopi (1980 LB)          Discovered 1980-Jun-14 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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