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8416 Okada (1996 VB8)
Classification: Main-belt Asteroid          SPK-ID: 2008416
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956825901707467 2.9757e-08  
a 2.152674679013729 5.6338e-09 au
q 1.731433722029342 6.2538e-08 au
i 3.316360956011811 3.7122e-06 deg
node 169.99416997564 4.6619e-05 deg
peri 130.5413478832485 4.8263e-05 deg
M 305.7563969359256 1.5811e-05 deg
tp 2459374.324928345896
(2021-Jun-08.82492835)
5.1107e-05 TDB
period 1153.628643189586
3.16
4.5288e-06
1.24e-08
d
yr
n .3120588259707747 1.225e-09 deg/d
Q 2.573915635998116 6.7362e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2552  
   data-arc span      14524 days (39.76 yr)  
   first obs. used      1980-09-06  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:48:51  

Additional Information
 Earth MOID = .716296 au 
 Jupiter MOID = 2.6481 au 
 T_jup = 3.677 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457100.5 (2015-Mar-19.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959919799819392 2.9812e-08  
q 1.730995136855739 6.2679e-08 au
tp 2457066.484044244969
(2015-Feb-12.98404424)
4.5666e-05 TDB
node 170.0141446827041 4.6617e-05 deg
peri 130.5195347811585 4.8257e-05 deg
i 3.315950600358137 3.7127e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2552  
   data-arc span      14524 days (39.76 yr)  
   first obs. used      1980-09-06  
   last obs. used      2020-06-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47632  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:48:51  

Additional Information
 Jupiter MOID = 2.6481 au 
 T_jup = 3.677 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.887327660073981E-16 -1.864336998714531E-15 7.724615551259038E-13 5.020202714894017E-15 2.029523703995737E-13 -2.951705664183348E-16
q -1.864336998714531E-15 3.928650031901857E-15 -1.555219110382065E-12 -9.901366563985364E-15 -4.084928282797836E-13 6.266800603803111E-16
tp 7.724615551259038E-13 -1.555219110382065E-12 2.085384152873897E-9 1.11193732447363E-11 5.751987782266124E-10 -1.112748000505224E-12
node 5.020202714894017E-15 -9.901366563985364E-15 1.11193732447363E-11 2.173139000968314E-9 -2.165929268869672E-9 3.277808937800048E-11
peri 2.029523703995737E-13 -4.084928282797836E-13 5.751987782266124E-10 -2.165929268869672E-9 2.328720509218043E-9 -3.303573452334668E-11
i -2.951705664183348E-16 6.266800603803111E-16 -1.112748000505224E-12 3.277808937800048E-11 -3.303573452334668E-11 1.378440035057465E-11

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 13.93   n/a E2021B10  
diameter diameter 4.198 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.252   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8416 Okada           Discovered 1996 Nov. 3 by S. Ueda and H. Kaneda at Kushiro.
Yoshiyuki Okada (b. 1947), a member of Shirakawa Observatory in Japan and Chiro Observatory in Australia, is a talented amateur who played an important role in developing large portable telescopes, including the 0.84-m Chiro Telescope. These telescopes went on nationwide tours to show the beauty of the starry sky.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2171-Jul-18 00:46 00:02 Eunom 0.0223123921627015 0.0223014318436448 0.0223233603594888 5.78939608394885 5.78939597527764 2514199.532223898 2.11006338881007 858.188001221792 29.102504814937 50.4893670432556 88474.075852729 T 39 CATAB v2.0f-lin.ifort 2020-Jun-23 16:49:04 2020-Jun-23 16:49

Alternate Designations
 1996 VB8 = 1980 RP8 = 1980 TG10 = 1986 LA1 = 1988 AO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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