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21126 Katsuyoshi (1993 BJ2)
Classification: Main-belt Asteroid          SPK-ID: 2021126
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358806765370757 2.7092e-08  
a 2.406647436457153 6.6023e-09 au
q 2.079630554605136 6.6191e-08 au
i 6.976202827292311 2.835e-06 deg
node 122.5116378869158 2.8982e-05 deg
peri 158.904918939679 3.1603e-05 deg
M 335.3240870508707 1.2463e-05 deg
tp 2459093.973362241989
(2020-Sep-01.47336224)
4.7199e-05 TDB
period 1363.694647346513
3.73
5.6117e-06
1.536e-08
d
yr
n .2639887167559766 1.0863e-09 deg/d
Q 2.733664318309169 7.4994e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2299  
   data-arc span      23967 days (65.62 yr)  
   first obs. used      1954-11-04  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45726  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:48:53  

Additional Information
 Earth MOID = 1.06489 au 
 Jupiter MOID = 2.406 au 
 T_jup = 3.500 
[ 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 13.5   n/a MPO474043  
rotation period rot_per 5.8397 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm]

21126 Katsuyoshi           Discovered 1993 Jan. 19 by T. Seki at Geisei.
Katsuyoshi Yoshimi (b. 1951) is an amateur astrophotographer and has contributed to many minor-planet discoveries at Geisei Observatory by hyper-sensitizing films for use at the observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24

[ show close-approach data ]
Alternate Designations
 1993 BJ2 = 1998 QH19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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