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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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07107969116646984 2.8917e-08  
a 3.000471713415853 1.2981e-08 au
q 2.787199110672525 8.7899e-08 au
i 9.370291356961193 3.2529e-06 deg
node 197.7273588515925 1.9309e-05 deg
peri 94.49452723242533 3.2081e-05 deg
M 47.2934019908357 2.4062e-05 deg
tp 2458951.108994077846
(2020-Apr-11.60899408)
0.00012726 TDB
period 1898.378174388315
5.20
1.232e-05
3.373e-08
d
yr
n .1896355556847872 1.2307e-09 deg/d
Q 3.21374431615918 1.3904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3206  
   data-arc span      24576 days (67.29 yr)  
   first obs. used      1953-10-08  
   last obs. used      2021-01-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 14:11:20  

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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1918-Mar-28 08:03 00:02 Jupiter 1.99684485175332 1.99684426216199 1.99684544134521 3.43636325884267 3.31062404743407 2421680.835290351 1.91509039350252 68.621678599377 14.7337758632349 64.5389493793556 5237350.58018796 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 14:11:42 2021-Apr-12 14:11
1964-Jul-09 02:51 < 00:01 Jupiter 1.9357018563077 1.93570158035433 1.93570213226108 4.14506074459947 4.0381147268153 2438585.618658612 0.964645129257593 76.3316448874697 11.9080880101529 87.213988948231 5235711.24046304 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 14:11:42 2021-Apr-12 14:11
2047-Dec-13 16:56 < 00:01 Jupiter 1.94025105719126 1.94025078592984 1.94025132845268 3.90976205800093 3.79646325624395 2469058.205674845 0.651284706893847 55.8961587996027 11.3725243490527 -89.4616831293204 4745670.73864027 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 14:11:42 2021-Apr-12 14:11
2131-May-25 12:26 00:02 Jupiter 1.96725107561916 1.96725071741177 1.9672514338279 3.61712629815881 3.49606632098762 2499536.017818039 2.29194505898107 115.372170185825 10.7024756804727 80.3116837216588 4600593.2366059 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 14:11:42 2021-Apr-12 14:11
2177-Sep-10 06:40 00:03 Jupiter 1.96988124260026 1.96988056219797 1.96988192301118 4.38651939283058 4.28737439592902 2516445.778112718 3.03639562784766 232.288617875544 12.8789062034079 -83.3856999388595 4948067.16699024 T 42 CATAB v2.0f-lin.ifort 2021-Apr-12 14:11:42 2021-Apr-12 14:11

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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