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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0525190969328546 1.6695e-08  
a 3.01070517011718 1.3626e-08 au
q 2.852585653451549 5.172e-08 au
i 11.83380880589065 6.9435e-07 deg
node 119.0717480846646 1.1853e-06 deg
peri 18.30554293998741 1.8203e-05 deg
M 18.53936314091426 1.5834e-05 deg
tp 2459298.236307465531
(2021-Mar-24.73630747)
8.3965e-05 TDB
period 1908.098408965318
5.22
1.2954e-05
3.547e-08
d
yr
n .1886695142706046 1.2809e-09 deg/d
Q 3.16882468678281 1.4342e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3125  
   data-arc span      28581 days (78.25 yr)  
   first obs. used      1943-03-09  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37605  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:13:25  

Additional Information
 Earth MOID = 1.8699 au 
 Jupiter MOID = 1.88432 au 
 T_jup = 3.215 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457528.5 (2016-May-20.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05241468210741077 1.7324e-08  
q 2.854254351060283 5.3919e-08 au
tp 2457404.695282802708
(2016-Jan-17.19528280)
8.2344e-05 TDB
node 119.176589641425 1.1912e-06 deg
peri 20.91164549734366 1.7514e-05 deg
i 11.83547660063056 6.9487e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3125  
   data-arc span      28581 days (78.25 yr)  
   first obs. used      1943-03-09  
   last obs. used      2021-06-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37605  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:13:25  

Additional Information
 Jupiter MOID = 1.88432 au 
 T_jup = 3.215 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.00120482510943E-16 -9.067393163469748E-16 9.490384097896939E-13 -9.527146424463613E-15 2.088032499633624E-13 -9.603137399815187E-15
q -9.067393163469748E-16 2.907230559455213E-15 -3.111079914314095E-12 3.025063729721081E-14 -6.833942709415873E-13 3.044585307104296E-14
tp 9.490384097896939E-13 -3.111079914314095E-12 6.780552443733187E-9 -4.578383471924892E-11 1.440012491009879E-9 -1.402989547597351E-11
node -9.527146424463613E-15 3.025063729721081E-14 -4.578383471924892E-11 1.418957289326593E-12 -1.05783111243156E-11 3.203943645279134E-13
peri 2.088032499633624E-13 -6.833942709415873E-13 1.440012491009879E-9 -1.05783111243156E-11 3.06735058152101E-10 -3.427887465334227E-12
i -9.603137399815187E-15 3.044585307104296E-14 -1.402989547597351E-11 3.203943645279134E-13 -3.427887465334227E-12 4.828494757224909E-13

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

[ show close-approach data ]
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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