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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418595071600034 1.277e-08  
a 2.238887048846316 5.8012e-09 au
q 1.921279635510063 3.0942e-08 au
i 3.971823147332949 7.8343e-07 deg
node 19.97449467094026 6.6335e-06 deg
peri 322.1543176889054 9.1819e-06 deg
M 70.8157709630933 6.9462e-06 deg
tp 2459155.801053249738
(2020-Nov-02.30105325)
2.3574e-05 TDB
period 1223.620383590178
3.35
4.7558e-06
1.302e-08
d
yr
n .2942088942190859 1.1435e-09 deg/d
Q 2.556494462182569 6.6242e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2862  
   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      .42457  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:38:44  

Additional Information
 Earth MOID = .914419 au 
 Jupiter MOID = 2.82147 au 
 T_jup = 3.620 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.68   n/a MPCxxxxx  
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

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