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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1696036778370734 2.9343e-08  
a 2.285216583272133 7.3048e-09 au
q 1.897635446094909 6.6433e-08 au
i 3.205461211708153 3.6438e-06 deg
node 284.919392671723 7.9298e-05 deg
peri 141.3877952650387 8.0633e-05 deg
M 178.7041549188645 1.3876e-05 deg
tp 2458374.143445222541
(2018-Sep-12.64344522)
4.8118e-05 TDB
period 1261.796961700536
3.45
6.0501e-06
1.656e-08
d
yr
n .2853073917017715 1.368e-09 deg/d
Q 2.672797720449358 8.5438e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      13999 days (38.33 yr)  
   first obs. used      1981-01-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:21:19  

Additional Information
 Earth MOID = .912738 au 
 Jupiter MOID = 2.61759 au 
 T_jup = 3.581 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456661.5 (2014-Jan-04.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1691575615701978 2.9304e-08  
q 1.898967938544182 6.6299e-08 au
tp 2457112.934327084962
(2015-Mar-31.43432709)
4.8044e-05 TDB
node 285.0085831328572 7.9243e-05 deg
peri 141.4283817330307 8.0586e-05 deg
i 3.206283661590839 3.6455e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1398  
   data-arc span      13999 days (38.33 yr)  
   first obs. used      1981-01-08  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51673  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:21:19  

Additional Information
 Jupiter MOID = 2.61759 au 
 T_jup = 3.581 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.587151011699021E-16 -1.934630389688196E-15 -1.66246622356675E-13 9.036381840276409E-15 -6.919814935082247E-14 2.573945940099067E-16
q -1.934630389688196E-15 4.395588755997057E-15 3.759323651234526E-13 -2.002046070037786E-14 1.52324025221161E-13 -5.28655963202045E-16
tp -1.66246622356675E-13 3.759323651234526E-13 2.308206860283281E-9 -1.76436521590681E-11 7.244015393089165E-10 1.047564948610965E-13
node 9.036381840276409E-15 -2.002046070037786E-14 -1.76436521590681E-11 6.279465118648982E-9 -6.274416472326662E-9 7.745395688119287E-11
peri -6.919814935082247E-14 1.52324025221161E-13 7.244015393089165E-10 -6.274416472326662E-9 6.494102078813107E-9 -7.730107064951001E-11
i 2.573945940099067E-16 -5.28655963202045E-16 1.047564948610965E-13 7.745395688119287E-11 -7.730107064951001E-11 1.328985587517309E-11

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

[ show close-approach data ]
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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