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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3282279461835299 3.9799e-08  
a 3.15137687972987 1.5991e-08 au
q 2.117006918845874 1.2892e-07 au
i 41.4406909986157 4.5898e-06 deg
node 108.8685289510237 6.9898e-06 deg
peri 263.4923146308787 9.1639e-06 deg
M 14.41324200582416 8.3867e-06 deg
tp 2458918.689674326552
(2020-Mar-10.18967433)
4.7314e-05 TDB
period 2043.379083660739
5.59
1.5553e-05
4.258e-08
d
yr
n .1761787633428524 1.341e-09 deg/d
Q 4.185746840613866 2.124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2620  
   data-arc span      14752 days (40.39 yr)  
   first obs. used      1980-06-11  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41136  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:04:38  

Additional Information
 Earth MOID = 1.42157 au 
 Jupiter MOID = 2.18067 au 
 T_jup = 2.753 
[ show covariance matrix ]

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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