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4505 Okamura (1990 DV1)
Classification: Main-belt Asteroid          SPK-ID: 2004505
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05264868190590167 3.0209e-08  
a 3.00916767759086 1.7254e-08 au
q 2.850738965731858 9.4344e-08 au
i 11.83391374536135 3.3884e-06 deg
node 119.0786961402336 1.9899e-05 deg
peri 19.06773183587897 4.491e-05 deg
M 227.5881605058162 4.0365e-05 deg
tp 2459301.781411510289
(2021-Mar-28.28141151)
0.00021524 TDB
period 1906.636967722161
5.22
1.6398e-05
4.49e-08
d
yr
n .1888141298498414 1.6239e-09 deg/d
Q 3.167596389449862 1.8162e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2201  
   data-arc span      27996 days (76.65 yr)  
   first obs. used      1943-03-09  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42512  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:36:52  

Additional Information
 Earth MOID = 1.86797 au 
 Jupiter MOID = 1.88745 au 
 T_jup = 3.216 
[ 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 11.4   n/a MPO452229  
diameter diameter 18.762 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.6687 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.213   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4505 Okamura (1990 DV1)          Discovered 1990-Feb-20 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1990 DV1 = 1943 ET = 1973 YC4 = 1976 NO = 1978 YG = 1982 SS 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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