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2740 Tsoj (1974 SY4)
Classification: Main-belt Asteroid          SPK-ID: 2002740
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07107969028818067 2.9563e-08  
a 3.000471711211646 1.304e-08 au
q 2.787199111260275 8.9584e-08 au
i 9.370290888497946 3.2815e-06 deg
node 197.7273636202509 1.9751e-05 deg
peri 94.49452388685292 3.2353e-05 deg
M 47.29340103217611 2.4102e-05 deg
tp 2458951.108999407931
(2020-Apr-11.60899941)
0.00012746 TDB
period 1898.378172296435
5.20
1.2376e-05
3.388e-08
d
yr
n .1896355558937523 1.2363e-09 deg/d
Q 3.213744311163018 1.3967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3174  
   data-arc span      24576 days (67.29 yr)  
   first obs. used      1953-10-08  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40697  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:05:20  

Additional Information
 Earth MOID = 1.79021 au 
 Jupiter MOID = 1.92991 au 
 T_jup = 3.229 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457334.5 (2015-Nov-08.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0708442084203994 2.9821e-08  
q 2.788803270439502 9.0568e-08 au
tp 2457063.735493937733
(2015-Feb-10.23549394)
0.0001303 TDB
node 197.8839035020665 1.9736e-05 deg
peri 96.63222333011294 3.2161e-05 deg
i 9.373293242729151 3.2807e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3174  
   data-arc span      24576 days (67.29 yr)  
   first obs. used      1953-10-08  
   last obs. used      2021-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40697  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:05:20  

Additional Information
 Jupiter MOID = 1.92991 au 
 T_jup = 3.229 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.892627380972232E-16 -2.676461105085811E-15 1.298775976787788E-12 -8.342785272195838E-16 2.55557679478871E-13 -9.994796714202065E-16
q -2.676461105085811E-15 8.202624701696507E-15 -4.456560897353227E-12 2.061714159259176E-15 -8.718784144164035E-13 3.229947451837374E-15
tp 1.298775976787788E-12 -4.456560897353227E-12 1.697827329930289E-8 -7.404840083574691E-12 3.32280454994778E-9 -2.70982106082131E-12
node -8.342785272195838E-16 2.061714159259176E-15 -7.404840083574691E-12 3.894982715874418E-10 -3.856405015205136E-10 -2.077792058931909E-11
peri 2.55557679478871E-13 -8.718784144164035E-13 3.32280454994778E-9 -3.856405015205136E-10 1.034306831113338E-9 1.998492296277601E-11
i -9.994796714202065E-16 3.229947451837374E-15 -2.70982106082131E-12 -2.077792058931909E-11 1.998492296277601E-11 1.076304790224398E-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 11.54   n/a E2021B10  
diameter diameter 17.701 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 22.042 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.122   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2740 Tsoj (1974 SY4)          Discovered 1974-Sep-26 by Zhuravleva, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1974 SY4 = 1951 GW = 1953 TY = 1958 TB1 = 1972 GD = 1974 TD1 = 1977 EB1 = 1979 SC9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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