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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05254962627530044 1.6723e-08  
a 3.010800325181179 1.3732e-08 au
q 2.852583893303355 5.1813e-08 au
i 11.8340649023169 6.9472e-07 deg
node 119.072343783108 1.1854e-06 deg
peri 18.44270781899172 1.8163e-05 deg
M 341.4372725327372 1.5812e-05 deg
tp 2459298.892194279284
(2021-Mar-25.39219428)
8.3768e-05 TDB
period 1908.188869497274
5.22
1.3055e-05
3.574e-08
d
yr
n .1886605701116183 1.2907e-09 deg/d
Q 3.169016757059003 1.4454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2967  
   data-arc span      28500 days (78.03 yr)  
   first obs. used      1943-03-09  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .38299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:40:45  

Additional Information
 Earth MOID = 1.86923 au 
 Jupiter MOID = 1.88436 au 
 T_jup = 3.215 
[ 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 11.46   n/a E2021B10  
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. 2020-October); 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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