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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1690250624972217 2.8696e-08  
a 2.2862898487256 6.9423e-09 au
q 1.899849564157992 6.4998e-08 au
i 3.20468082984013 3.4204e-06 deg
node 284.9217320918747 6.8329e-05 deg
peri 141.3485126734245 6.9389e-05 deg
M 235.7654939487311 1.2265e-05 deg
tp 2459636.247692299355
(2022-Feb-25.74769230)
4.3729e-05 TDB
period 1262.685981646928
3.46
5.7512e-06
1.575e-08
d
yr
n .2851065151847573 1.2986e-09 deg/d
Q 2.672730133293209 8.1157e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1513  
   data-arc span      14432 days (39.51 yr)  
   first obs. used      1981-01-08  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:07:25  

Additional Information
 Earth MOID = .914363 au 
 Jupiter MOID = 2.61787 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 14.95   n/a E2021B10  
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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