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2012 Guo Shou-Jing (1964 TE2)
Classification: Main-belt Asteroid          SPK-ID: 2002012
[ 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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1788168146746035 3.0414e-08  
a 2.328221454731794 6.3703e-09 au
q 1.911896310339583 7.3075e-08 au
i 2.90722377562494 2.8072e-06 deg
node 277.1003024112186 6.3741e-05 deg
peri 36.72708504090684 6.4248e-05 deg
M 284.0545418475363 8.8047e-06 deg
tp 2459274.237415766638
(2021-Feb-28.73741577)		 3.2024e-05 TDB
period 1297.582134248967
3.55		 5.3255e-06
1.458e-08		 d
yr
n .2774390849704214 1.1387e-09 deg/d
Q 2.744546599124005 7.5095e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2916  
   data-arc span      24476 days (67.01 yr)  
   first obs. used      1953-08-15  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:24  

Additional Information
 Earth MOID = .89884 au 
 Jupiter MOID = 2.5278 au 
 T_jup = 3.549 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457074.5 (2015-Feb-21.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1792429021531485 3.0478e-08  
q 1.910815444796024 7.3226e-08 au
tp 2456676.811875445815
(2014-Jan-19.31187545)		 3.0605e-05 TDB
node 277.254070507414 6.3644e-05 deg
peri 36.21647728876459 6.4149e-05 deg
i 2.909967614119709 2.8092e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2916  
   data-arc span      24476 days (67.01 yr)  
   first obs. used      1953-08-15  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4737  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:24  

Additional Information
 Jupiter MOID = 2.5278 au 
 T_jup = 3.549 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.289331697995028E-16 -2.227026134576194E-15 1.444299306306861E-13 8.324341262178068E-15 4.847923434990968E-14 -1.440284002251915E-16
q -2.227026134576194E-15 5.362076830617621E-15 -3.446667668093918E-13 -1.960983504089207E-14 -1.141087583187849E-13 4.248463482346186E-16
tp 1.444299306306861E-13 -3.446667668093918E-13 9.3665118837866E-10 4.559969274989849E-12 2.575363470044608E-10 6.367988866226511E-13
node 8.324341262178068E-15 -1.960983504089207E-14 4.559969274989849E-12 4.050618517226462E-9 -4.043539199667623E-9 2.825301491752033E-12
peri 4.847923434990968E-14 -1.141087583187849E-13 2.575363470044608E-10 -4.043539199667623E-9 4.11513264072831E-9 -2.653896576586743E-12
i -1.440284002251915E-16 4.248463482346186E-16 6.367988866226511E-13 2.825301491752033E-12 -2.653896576586743E-12 7.891487467028321E-12

[ 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 13.48   n/a E2021B10  
diameter diameter 11.931 km 0.080 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 12. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.049   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

2012 Guo Shou-Jing (1964 TE2)          Discovered 1964-Oct-09 by Purple Mountain Observatory at Nanking
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1964 TE2 = 1971 SF1 = 1974 MS 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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