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11842 Kap'bos (1987 BR1)
Classification: Main-belt Asteroid          SPK-ID: 2011842
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09485434585578283 1.6932e-08  
a 2.25009055735398 5.1974e-09 au
q 2.036659689419894 3.8594e-08 au
i 3.691209331236743 7.1647e-07 deg
node 272.7767299956209 1.2118e-05 deg
peri 172.7946997885782 1.7523e-05 deg
M 102.4563348703751 1.0765e-05 deg
tp 2459045.639290097970
(2020-Jul-15.13929010)
3.6573e-05 TDB
period 1232.816455171216
3.38
4.2715e-06
1.169e-08
d
yr
n .2920142722705648 1.0118e-09 deg/d
Q 2.463521425288065 5.6904e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2562  
   data-arc span      12585 days (34.46 yr)  
   first obs. used      1987-01-22  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47397  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:16:15  

Additional Information
 Earth MOID = 1.05294 au 
 Jupiter MOID = 2.69079 au 
 T_jup = 3.619 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457411.5 (2016-Jan-24.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09415020426089421 1.6906e-08  
q 2.038535711105666 3.8503e-08 au
tp 2457811.093948224401
(2017-Feb-26.59394822)
3.6159e-05 TDB
node 272.8416017312954 1.2137e-05 deg
peri 172.3544517955187 1.761e-05 deg
i 3.688079285549587 7.1601e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2562  
   data-arc span      12585 days (34.46 yr)  
   first obs. used      1987-01-22  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47397  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 13:16:15  

Additional Information
 Jupiter MOID = 2.69079 au 
 T_jup = 3.619 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.858140064639741E-16 -6.460847109313638E-16 -1.340716792704046E-13 -5.970135445593947E-14 2.432754239296375E-14 3.912012192461112E-15
q -6.460847109313638E-16 1.482456868958779E-15 3.19868664781964E-13 1.29379237970169E-13 -4.758546343202419E-14 -8.483150452987266E-15
tp -1.340716792704046E-13 3.19868664781964E-13 1.307497044209671E-9 -1.544220107932534E-10 4.876925134117981E-10 9.509855833759909E-12
node -5.970135445593947E-14 1.29379237970169E-13 -1.544220107932534E-10 1.472955219129555E-10 -1.856959753824867E-10 -6.71772072398323E-12
peri 2.432754239296375E-14 -4.758546343202419E-14 4.876925134117981E-10 -1.856959753824867E-10 3.101005847897502E-10 8.996515934571734E-12
i 3.912012192461112E-15 -8.483150452987266E-15 9.509855833759909E-12 -6.71772072398323E-12 8.996515934571734E-12 5.126758413455942E-13

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.12   n/a MPO636245  
rotation period rot_per 3.68578 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Vokrouhlicky, D.; Polishook, D.; Scheeres, D.J.; et al. (2010) Nature 466, 1085-1088. Lightcurve plots as supplemental data, http://www.Nature.com/nature]
[Pravec, P.; Fatka, P.; Vokrouhlicky, D.; Scheeres, D.J.; et al. (2018) Icarus 304, 110-126.]

11842 Kap'bos           Discovered 1987 Jan. 22 by E. W. Elst at the European Southern Observatory
Kap'bos is a small village, about 20 km east of the city of Antwerp. In 1936 the discoverer was born there. It is currently the site of the Holbach Foundation.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010804/MPCPages.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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