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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .178886662659895 1.0491e-08  
a 2.328534909555551 6.0318e-09 au
q 1.911991070698098 2.6166e-08 au
i 2.906295979338628 6.8238e-07 deg
node 277.0870309290774 9.6052e-06 deg
peri 36.57634377847079 1.0537e-05 deg
M 34.03003077114484 6.3847e-06 deg
tp 2459273.817562014427
(2021-Feb-28.31756201)
2.2822e-05 TDB
period 1297.844188617533
3.55
5.0428e-06
1.381e-08
d
yr
n .2773830658235431 1.0778e-09 deg/d
Q 2.745078748413004 7.1108e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2969  
   data-arc span      24787 days (67.86 yr)  
   first obs. used      1953-08-15  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 13:03:09  

Additional Information
 Earth MOID = .898292 au 
 Jupiter MOID = 2.52529 au 
 T_jup = 3.549 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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

Alternate Designations
 1964 TE2 = 1971 SF1 = 1974 MS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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