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8234 Nobeoka (1997 VK8)
Classification: Main-belt Asteroid          SPK-ID: 2008234
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .009051139897988263 4.9199e-08  
a 2.868138295030645 1.3248e-08 au
q 2.842178374075545 1.3943e-07 au
i 1.715412598467564 5.3172e-06 deg
node 184.1919936192278 0.00010532 deg
peri 10.40761860799732 0.00021717 deg
M 165.5748240549473 0.0001884 deg
tp 2458580.499620751277
(2019-Apr-06.99962075)
0.00093005 TDB
period 1774.183594675321
4.86
1.2293e-05
3.366e-08
d
yr
n .2029102292910564 1.4059e-09 deg/d
Q 2.894098215985744 1.3368e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2119  
   data-arc span      16040 days (43.92 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 19:31:21  

Additional Information
 Earth MOID = 1.83762 au 
 Jupiter MOID = 2.0597 au 
 T_jup = 3.298 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456607.5 (2013-Nov-11.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .006077909366676449 4.9721e-08  
q 2.850367100577421 1.3962e-07 au
tp 2456715.743622707487
(2014-Feb-27.24362271)
0.0013391 TDB
node 184.4447669352308 0.00010564 deg
peri 352.1191893868579 0.00029191 deg
i 1.712013371904575 5.312e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2119  
   data-arc span      16040 days (43.92 yr)  
   first obs. used      1977-09-09  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 19:31:21  

Additional Information
 Jupiter MOID = 2.0597 au 
 T_jup = 3.298 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.472219500831429E-15 -6.914924862715755E-15 7.024597375810941E-12 4.174886140652506E-15 1.410256481492965E-12 1.057390649560957E-16
q -6.914924862715755E-15 1.949505721289039E-14 -2.273190414557796E-11 -1.288952601250824E-14 -4.572286233178977E-12 -1.140548397681078E-16
tp 7.024597375810941E-12 -2.273190414557796E-11 1.793121697926804E-6 5.345270518940056E-11 3.643999948252658E-7 -3.414012630458895E-12
node 4.174886140652506E-15 -1.288952601250824E-14 5.345270518940056E-11 1.11591786412385E-8 -1.114300023127118E-8 1.947058263502496E-11
peri 1.410256481492965E-12 -4.572286233178977E-12 3.643999948252658E-7 -1.114300023127118E-8 8.521007078903096E-8 -2.013449917070615E-11
i 1.057390649560957E-16 -1.140548397681078E-16 -3.414012630458895E-12 1.947058263502496E-11 -2.013449917070615E-11 2.821783617339128E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0   n/a MPO302116  
rotation period rot_per 33.090 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

8234 Nobeoka           Discovered 1997 Nov. 3 by T. Seki at Geisei.
Named for a town in Miyazaki prefecture, at the mouth of the Gokase River. Although it is the site of one of the largest chemical factories in Japan, it remains rich in natural beauty. The sound of the bell at the top of the castle hill is described in a poem by Bokusui Wakayama. Name proposed by the discoverer following a suggestion by T. Sato and R. Ukishima.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981208/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1997 VK8 = 1977 RA17 = 1990 HO4 = 1992 UE2 = 1995 KU4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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