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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1956825965928203 1.33e-08  
a 2.15267467699187 5.0111e-09 au
q 1.731433706578491 2.8012e-08 au
i 3.316370750439294 9.4514e-07 deg
node 169.9941800328117 1.6102e-05 deg
peri 130.5413351256555 2.2269e-05 deg
M 305.7564041966529 8.515e-06 deg
tp 2459374.324904833829
(2021-Jun-08.82490483)
2.7622e-05 TDB
period 1153.628641564301
3.16
4.0282e-06
1.103e-08
d
yr
n .3120588264104176 1.0896e-09 deg/d
Q 2.57391564740525 5.9917e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2574  
   data-arc span      14767 days (40.43 yr)  
   first obs. used      1980-09-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47805  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 20:39:11  

Additional Information
 Earth MOID = .716296 au 
 Jupiter MOID = 2.6481 au 
 T_jup = 3.677 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457111.5 (2015-Mar-30.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1959930496207744 1.3291e-08  
q 1.730992918763522 2.7994e-08 au
tp 2457066.481235996336
(2015-Feb-12.98123600)
2.3992e-05 TDB
node 170.0140413433415 1.6101e-05 deg
peri 130.5182953302104 2.2259e-05 deg
i 3.31597136650998 9.4514e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2574  
   data-arc span      14767 days (40.43 yr)  
   first obs. used      1980-09-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47805  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 20:39:11  

Additional Information
 Jupiter MOID = 2.6481 au 
 T_jup = 3.677 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.766490117240699E-16 -3.683884661264278E-16 1.974390065413838E-14 2.218169391657174E-14 -3.07449726678695E-14 -4.521079420735906E-15
q -3.683884661264278E-16 7.836783778604483E-16 -1.28750029529327E-14 -6.262651429922994E-14 8.954929237713446E-14 9.092828331269256E-15
tp 1.974390065413838E-14 -1.28750029529327E-14 5.756221406187819E-10 -3.128964268420022E-10 4.831784617700269E-10 -1.126762864327629E-11
node 2.218169391657174E-14 -6.262651429922994E-14 -3.128964268420022E-10 2.592482859073443E-10 -3.512192540529762E-10 6.784678366867928E-12
peri -3.07449726678695E-14 8.954929237713446E-14 4.831784617700269E-10 -3.512192540529762E-10 4.954476714699883E-10 -9.642661975497306E-12
i -4.521079420735906E-15 9.092828331269256E-15 -1.126762864327629E-11 6.784678366867928E-12 -9.642661975497306E-12 8.932880960953426E-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 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 40 CATAB v2.0f-lin.ifort 2021-Mar-16 20:40:08 2021-Mar-16 20:40

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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