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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .141927136399882 1.2764e-08  
a 2.238911830629668 5.8406e-09 au
q 1.921149485856581 3.0937e-08 au
i 3.971796450155757 7.8342e-07 deg
node 19.97520863067195 6.6335e-06 deg
peri 322.1283035940934 9.1831e-06 deg
M 13.16706754178071 6.9378e-06 deg
tp 2459155.745111835567
(2020-Nov-02.24511184)		 2.3577e-05 TDB
period 1223.640699652467
3.35		 4.7881e-06
1.311e-08		 d
yr
n .2942040094794539 1.1512e-09 deg/d
Q 2.556674175402754 6.6695e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2861  
   data-arc span      26247 days (71.86 yr)  
   first obs. used      1949-04-04  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:56:24  

Additional Information
 Earth MOID = .91326 au 
 Jupiter MOID = 2.8218 au 
 T_jup = 3.620 
[ 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 13.67   n/a E2020-QM5  
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. 2020-October); 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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