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5311 (1981 GD1)
Classification: Main-belt Asteroid          SPK-ID: 2005311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0909271766410461 4.4767e-08  
a 3.037956574855257 1.522e-08 au
q 2.761723760745566 1.372e-07 au
i 3.457557918661786 3.5901e-06 deg
node 227.1739689498873 8.1558e-05 deg
peri 265.5921339459796 8.467e-05 deg
M 257.4386061032255 2.5388e-05 deg
tp 2459947.500741467612
(2023-Jan-03.00074147)
0.00013866 TDB
period 1934.063680218554
5.30
1.4535e-05
3.979e-08
d
yr
n .1861365805490536 1.3988e-09 deg/d
Q 3.314189388964949 1.6604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1572  
   data-arc span      14585 days (39.93 yr)  
   first obs. used      1981-02-12  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50922  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 17:24:08  

Additional Information
 Earth MOID = 1.77945 au 
 Jupiter MOID = 1.73847 au 
 T_jup = 3.232 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.78   n/a E2021B10  
diameter diameter 9.349 km 0.332 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

5311 (1981 GD1)          Discovered 1981-Apr-03 by Gilmore and Kilmartin at Lake Tekapo
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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