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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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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 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 
[ 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 11.54   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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