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4748 Tokiwagozen (1989 WV)
Classification: Main-belt Asteroid          SPK-ID: 2004748
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05764960867339359 1.4437e-08  
a 2.742277720189525 1.2224e-08 au
q 2.584186482746833 3.9477e-08 au
i 16.31503327530925 8.9121e-07 deg
node 85.30598775693832 3.5545e-06 deg
peri 184.9000539950179 2.3738e-05 deg
M 133.8272305402974 2.2034e-05 deg
tp 2458779.894251046508
(2019-Oct-23.39425105)
0.00010097 TDB
period 1658.691349488968
4.54
1.109e-05
3.036e-08
d
yr
n .2170385708654679 1.4512e-09 deg/d
Q 2.900368957632217 1.2928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2641  
   data-arc span      18100 days (49.56 yr)  
   first obs. used      1972-01-05  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:24:15  

Additional Information
 Earth MOID = 1.56837 au 
 Jupiter MOID = 2.18257 au 
 T_jup = 3.289 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457392.5 (2016-Jan-05.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05719628547291229 1.4542e-08  
q 2.586738465974858 3.9893e-08 au
tp 2457128.694828164134
(2015-Apr-16.19482816)
0.00010097 TDB
node 85.33456214597516 3.5547e-06 deg
peri 186.8314301264887 2.3772e-05 deg
i 16.31451342423459 8.9043e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2641  
   data-arc span      18100 days (49.56 yr)  
   first obs. used      1972-01-05  
   last obs. used      2021-07-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:24:15  

Additional Information
 Jupiter MOID = 2.18257 au 
 T_jup = 3.289 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.114682440339496E-16 -5.556052280543156E-16 3.342969435510931E-13 -2.700346363554762E-14 9.67473137313364E-14 -7.972329923065715E-15
q -5.556052280543156E-16 1.591453892307311E-15 -9.370504452152176E-13 7.714266439159223E-14 -2.722957083614034E-13 2.265266476941794E-14
tp 3.342969435510931E-13 -9.370504452152176E-13 1.019406922428919E-8 3.371270902806739E-11 2.382078955006375E-9 5.563184273737512E-12
node -2.700346363554762E-14 7.714266439159223E-14 3.371270902806739E-11 1.263574760290398E-11 -2.104597188153393E-12 1.791971226302408E-12
peri 9.67473137313364E-14 -2.722957083614034E-13 2.382078955006375E-9 -2.104597188153393E-12 5.650927093195477E-10 1.888476336223366E-14
i -7.972329923065715E-15 2.265266476941794E-14 5.563184273737512E-12 1.791971226302408E-12 1.888476336223366E-14 7.928678369621519E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.69   n/a E2021B10  
diameter diameter 11.938 km 0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 39.78 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Marchini, A.; Franco, L.; Papini, R.; Banfi, M.; et al. (2019) Minor Planet Bull. 46, 504-505.]
geometric albedo albedo 0.349   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4748 Tokiwagozen (1989 WV)          Discovered 1989-Nov-20 by Suzuki and Urata at Toyota
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1989 WV = 1972 AG = 1980 WK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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