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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 ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07158248172104338 3.1136e-08  
a 3.000908650310538 1.5662e-08 au
q 2.786096161703163 9.7302e-08 au
i 9.372706124362036 4.025e-06 deg
node 197.8826707970492 2.0536e-05 deg
peri 95.8673950927531 3.4734e-05 deg
M 292.2033470825231 2.8208e-05 deg
tp 2458958.088334701658
(2020-Apr-18.58833470)
0.00014911 TDB
period 1898.792860014657
5.20
1.4865e-05
4.07e-08
d
yr
n .1895941403514763 1.4843e-09 deg/d
Q 3.215721138917913 1.6783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2512  
   data-arc span      24055 days (65.86 yr)  
   first obs. used      1953-10-08  
   last obs. used      2019-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44179  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:26:39  

Additional Information
 Earth MOID = 1.79032 au 
 Jupiter MOID = 1.93564 au 
 T_jup = 3.229 
[ 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 11.4   n/a MPO302078  
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. 2019-January); 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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