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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944290979992244 2.8642e-08  
a 2.435306016039803 8.4405e-09 au
q 1.961811663989099 6.854e-08 au
i 6.726104826990371 3.4159e-06 deg
node 95.79018725424136 3.3273e-05 deg
peri 168.3893184921502 3.4969e-05 deg
M 230.7847345060552 1.2384e-05 deg
tp 2459498.741688616172
(2021-Oct-11.24168862)
4.9107e-05 TDB
period 1388.125522291539
3.80
7.2167e-06
1.976e-08
d
yr
n .2593425408717407 1.3483e-09 deg/d
Q 2.908800368090506 1.0082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2133  
   data-arc span      10713 days (29.33 yr)  
   first obs. used      1991-07-03  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:55:46  

Additional Information
 Earth MOID = .946529 au 
 Jupiter MOID = 2.17768 au 
 T_jup = 3.470 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456589.5 (2013-Oct-24.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1947561347530402 2.86e-08  
q 1.960449239604755 6.8464e-08 au
tp 2456723.662541379923
(2014-Mar-07.16254138)
4.3027e-05 TDB
node 95.83463068537883 3.3284e-05 deg
peri 168.5177306844161 3.4981e-05 deg
i 6.72592577581333 3.4159e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2133  
   data-arc span      10713 days (29.33 yr)  
   first obs. used      1991-07-03  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:55:46  

Additional Information
 Jupiter MOID = 2.17768 au 
 T_jup = 3.470 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.17972624145061E-16 -1.949004949166226E-15 2.921058209333029E-13 -1.187602093998594E-15 6.264333036070578E-14 -1.358751909709997E-16
q -1.949004949166226E-15 4.687261975424513E-15 -6.316476044957754E-13 4.320930140463618E-15 -1.357490633312509E-13 4.373110313000074E-16
tp 2.921058209333029E-13 -6.316476044957754E-13 1.851337102413338E-9 4.188777213386927E-12 4.800937804057168E-10 -6.939096085472132E-13
node -1.187602093998594E-15 4.320930140463618E-15 4.188777213386927E-12 1.107826672001832E-9 -1.098822879985694E-9 2.565453320413892E-11
peri 6.264333036070578E-14 -1.357490633312509E-13 4.800937804057168E-10 -1.098822879985694E-9 1.223654785637672E-9 -2.565090950750633E-11
i -1.358751909709997E-16 4.373110313000074E-16 -6.939096085472132E-13 2.565453320413892E-11 -2.565090950750633E-11 1.166851757435193E-11

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] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.055 h n/a LCDB (Rev. 2019-August); 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, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.080   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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