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14551 Itagaki (1997 UN8)
Classification: Main-belt Asteroid          SPK-ID: 2014551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2208359919549762 1.0995e-08  
a 2.748406561756154 9.9882e-09 au
q 2.141459472395168 2.9092e-08 au
i 7.069515225217138 1.3004e-06 deg
node 25.51628601532056 3.2305e-06 deg
peri 259.6285894036149 5.124e-06 deg
M 98.07771033035127 5.6539e-06 deg
tp 2458747.093533565465
(2019-Sep-20.59353357)
2.5003e-05 TDB
period 1664.255082695588
4.56
9.0723e-06
2.484e-08
d
yr
n .2163129941696854 1.1792e-09 deg/d
Q 3.355353651117139 1.2194e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      13672 days (37.43 yr)  
   first obs. used      1983-09-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41422  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:32:08  

Additional Information
 Earth MOID = 1.13725 au 
 Jupiter MOID = 1.875 au 
 T_jup = 3.300 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457122.5 (2015-Apr-10.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205078253144618 1.0903e-08  
q 2.143055643905075 2.8809e-08 au
tp 2457083.993491446820
(2015-Mar-02.49349145)
2.3019e-05 TDB
node 25.55386058116532 3.2281e-06 deg
peri 259.9177357947574 5.1565e-06 deg
i 7.072227819983739 1.3005e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2662  
   data-arc span      13672 days (37.43 yr)  
   first obs. used      1983-09-06  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41422  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:32:08  

Additional Information
 Jupiter MOID = 1.875 au 
 T_jup = 3.300 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.188651479219104E-16 -3.031662853889131E-16 -4.53948561452208E-14 -3.982309594439969E-15 -1.831327925362302E-14 3.484339202632497E-15
q -3.031662853889131E-16 8.299769688511239E-16 1.328113174210826E-13 1.046011706725675E-14 5.269810031067014E-14 -9.561666412964126E-15
tp -4.53948561452208E-14 1.328113174210826E-13 5.298954156344303E-10 4.4222164331981E-11 1.045204241785851E-10 -8.850074946454822E-12
node -3.982309594439969E-15 1.046011706725675E-14 4.4222164331981E-11 1.042078600836194E-11 3.136145741730175E-12 -1.011127330270776E-12
peri -1.831327925362302E-14 5.269810031067014E-14 1.045204241785851E-10 3.136145741730175E-12 2.658957958590202E-11 -1.81727366782759E-12
i 3.484339202632497E-15 -9.561666412964126E-15 -8.850074946454822E-12 -1.011127330270776E-12 -1.81727366782759E-12 1.691392453940538E-12

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 13.55   n/a E2020-QM5  
diameter diameter 10.364 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.94719 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.084   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

14551 Itagaki           Discovered 1997 Oct. 22 by T. Okuni at Nanyo.
Koichi Itagaki (b. 1947), a confectionery manufacturing industry president, is also an amateur astronomer in Yamagata. He is credited with the discovery of supernovae 2001bq and 2001gd.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020128/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1997 UN8 = 1983 RY6 = 2000 DK101 
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