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11940 (1993 GR)
Classification: Main-belt Asteroid          SPK-ID: 2011940
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1229322804063862 2.7142e-08  
a 2.811583782490533 1.1463e-08 au
q 2.46594937655536 8.0282e-08 au
i 4.272719701582679 3.1317e-07 deg
node 39.52457839537887 7.6283e-06 deg
peri 172.2669688047801 8.2676e-06 deg
M 310.0066147132633 8.0844e-06 deg
tp 2459439.630524470334
(2021-Aug-13.13052447)
3.9226e-05 TDB
period 1721.967582622561
4.71
1.0531e-05
2.883e-08
d
yr
n .2090631691519529 1.2785e-09 deg/d
Q 3.157218188425707 1.2872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2271  
   data-arc span      16206 days (44.37 yr)  
   first obs. used      1976-10-22  
   last obs. used      2021-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49614  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 22:52:54  

Additional Information
 Earth MOID = 1.45912 au 
 Jupiter MOID = 1.80462 au 
 T_jup = 3.306 
[ 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 13.44   n/a E2021B10  
diameter diameter 10.810 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.079   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11940 (1993 GR)          Discovered 1993-Apr-15 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19991026/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1993 GR = 1976 UY11 = 1981 UW3 = 1983 CV = 1986 XW3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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