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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358806781972738 2.7624e-08  
a 2.406647439769667 8.2497e-09 au
q 2.079630553472032 6.6774e-08 au
i 6.976199074058797 3.3438e-06 deg
node 122.5116076214925 3.2638e-05 deg
peri 158.9049559850124 3.6288e-05 deg
M 335.3240781630768 1.7686e-05 deg
tp 2459093.973396102300
(2020-Sep-01.47339610)
6.7193e-05 TDB
period 1363.694650162001
3.73
7.0118e-06
1.92e-08
d
yr
n .2639887162109447 1.3574e-09 deg/d
Q 2.733664326067302 9.3706e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2045  
   data-arc span      23832 days (65.25 yr)  
   first obs. used      1954-11-04  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47968  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:18:46  

Additional Information
 Earth MOID = 1.06489 au 
 Jupiter MOID = 2.406 au 
 T_jup = 3.500 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456700.5 (2014-Feb-12.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1365478524949879 2.7745e-08  
q 2.077304931652234 6.7089e-08 au
tp 2456364.928225613098
(2013-Mar-13.42822561)
6.1787e-05 TDB
node 122.5493052442435 3.2617e-05 deg
peri 158.4616132277934 3.62e-05 deg
i 6.978749534727584 3.3449e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2045  
   data-arc span      23832 days (65.25 yr)  
   first obs. used      1954-11-04  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47968  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:18:46  

Additional Information
 Jupiter MOID = 2.406 au 
 T_jup = 3.500 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.697660475528597E-16 -1.850554369092617E-15 -1.952641238692467E-14 2.16118043308263E-15 -2.569858327271303E-15 -3.141267950270529E-16
q -1.850554369092617E-15 4.500882756845813E-15 1.507899747409732E-13 -4.565464961892545E-15 3.441641820078514E-14 8.897549317485976E-16
tp -1.952641238692467E-14 1.507899747409732E-13 3.817619821313676E-9 1.603205261135916E-11 9.886877429954486E-10 9.041528487471903E-13
node 2.16118043308263E-15 -4.565464961892545E-15 1.603205261135916E-11 1.063857019921769E-9 -1.051515471690314E-9 2.003601031562199E-11
peri -2.569858327271303E-15 3.441641820078514E-14 9.886877429954486E-10 -1.051515471690314E-9 1.310475525024643E-9 -1.965075420689642E-11
i -3.141267950270529E-16 8.897549317485976E-16 9.041528487471903E-13 2.003601031562199E-11 -1.965075420689642E-11 1.118813694152918E-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 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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