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12016 Green (1996 XC)
Classification: Main-belt Asteroid          SPK-ID: 2012016
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944290988521174 2.8608e-08  
a 2.435306016312763 8.4311e-09 au
q 1.961811662131933 6.8472e-08 au
i 6.726104812028027 3.4145e-06 deg
node 95.79018729907644 3.3269e-05 deg
peri 168.3893185305435 3.4965e-05 deg
M 230.784734262262 1.238e-05 deg
tp 2459498.741689639983
4.9088e-05 TDB
period 1388.125522524921
n .2593425408281382 1.3468e-09 deg/d
Q 2.908800370493594 1.007e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2144  
   data-arc span      10729 days (29.37 yr)  
   first obs. used      1991-07-03  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:47:48  

Additional Information
 Earth MOID = .946529 au 
 Jupiter MOID = 2.17768 au 
 T_jup = 3.470 
[ 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 13.9   n/a MPO431639  
diameter diameter 7.989 km 0.915 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 5.055 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site,]
geometric albedo albedo 0.080   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

12016 Green           Discovered 1996 Dec. 1 by P. G. Comba at Prescott.
George Green (1793-1841), a self-taught miller's son of Nottingham, was instrumental (along with Gauss) in making the theories of electricity and magnetism a part of mathematical physics. His name is associated with the "Green's function" used in the solution of partial differential equations.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000124/MPCPages.arcLast Updated: 2013-03-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2095-May-27 19:54 00:02 Ceres 0.0122099156873789 0.0122052836697023 0.0122145541994396 3.8854471451265 3.8854382400328 2486390.329445414 1.5725845766929 503.311937333423 42.5479032706065 -63.3036481811568 38042.5539835369 T 35 CATAB v2.0f-lin.ifort 2020-Dec-18 02:47:53 2020-Dec-18 02:47

Alternate Designations
 1996 XC = 1991 NU2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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