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4097 Tsurugisan (1987 WW)
Classification: Main-belt Asteroid          SPK-ID: 2004097
[ 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1422515482380103 4.5749e-08  
a 2.239639627201146 6.9393e-09 au
q 1.921047422736583 1.0192e-07 au
i 3.971335362931743 5.0864e-06 deg
node 19.9927446177405 4.4424e-05 deg
peri 322.1298439140546 4.6636e-05 deg
M 314.3375278554969 1.6168e-05 deg
tp 2459155.782516664567
(2020-Nov-02.28251666)		 5.5217e-05 TDB
period 1224.237396134359
3.35		 5.6898e-06
1.558e-08		 d
yr
n .2940606136822259 1.3667e-09 deg/d
Q 2.558231831665709 7.9264e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2239  
   data-arc span      25654 days (70.24 yr)  
   first obs. used      1949-04-04  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44604  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:04:11  

Additional Information
 Earth MOID = .914992 au 
 Jupiter MOID = 2.82067 au 
 T_jup = 3.619 
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[ 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 13.7   n/a MPO473822  
diameter diameter 4.738 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.0758 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.275   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

4097 Tsurugisan (1987 WW)          Discovered 1987-Nov-18 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1987 WW = 1949 GN = 1976 JV3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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