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15729 Yumikoitahana (1990 UB)
Classification: Main-belt Asteroid          SPK-ID: 2015729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696037010803361 2.9058e-08  
a 2.285216585480088 7.0514e-09 au
q 1.897635394812497 6.5986e-08 au
i 3.20545825243758 3.4205e-06 deg
node 284.9193395570234 7.0652e-05 deg
peri 141.3878640806024 7.1711e-05 deg
M 178.7041444905177 1.2553e-05 deg
tp 2458374.143480866039
(2018-Sep-12.64348087)
4.3093e-05 TDB
period 1261.79696352924
3.45
5.8402e-06
1.599e-08
d
yr
n .2853073912882796 1.3205e-09 deg/d
Q 2.672797776147679 8.2473e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1494  
   data-arc span      14432 days (39.51 yr)  
   first obs. used      1981-01-08  
   last obs. used      2020-07-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:31:44  

Additional Information
 Earth MOID = .912738 au 
 Jupiter MOID = 2.61759 au 
 T_jup = 3.581 
[ show covariance matrix ]

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 14.9   n/a MPO332965  
diameter diameter 6.240 km 0.188 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15729 Yumikoitahana           Discovered 1990 Oct. 16 by A. Takahashi and K. Watanabe at Kitami.
Since their high-school days, Yumiko Itahana (b. 1965) worked together with the first discoverer and greatly influenced his astronomical career.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020921/MPCPages.arcLast Updated: 2003-10-02

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Alternate Designations
 1990 UB = 1981 AF2 = 1999 JL106 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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