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11675 Billboyle (1998 CP2)
Classification: Main-belt Asteroid          SPK-ID: 2011675
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1625902970797068 3.1699e-08  
a 2.304751503432386 7.6271e-09 au
q 1.930021271794413 7.4371e-08 au
i 2.046545320902977 3.546e-06 deg
node 181.3747725429773 9.7467e-05 deg
peri 29.77199196045878 9.8017e-05 deg
M 76.15081991124428 1.1366e-05 deg
tp 2458730.162265332595
(2019-Sep-03.66226533)
3.9987e-05 TDB
period 1278.01098653562
3.50
6.344e-06
1.737e-08
d
yr
n .2816877192706091 1.3983e-09 deg/d
Q 2.679481735070358 8.8672e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1972  
   data-arc span      13848 days (37.91 yr)  
   first obs. used      1981-06-04  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50062  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:56:56  

Additional Information
 Earth MOID = .924738 au 
 Jupiter MOID = 2.28333 au 
 T_jup = 3.570 
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Orbital Elements at Epoch 2456352.5 (2013-Mar-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162456741880172 3.1681e-08  
q 1.93006408876401 7.4205e-08 au
tp 2456175.128608063404
(2012-Sep-04.62860806)
3.8716e-05 TDB
node 181.4460568733454 9.757e-05 deg
peri 29.78078896923374 9.8123e-05 deg
i 2.045006303662297 3.5452e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1972  
   data-arc span      13848 days (37.91 yr)  
   first obs. used      1981-06-04  
   last obs. used      2019-05-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50062  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:56:56  

Additional Information
 Jupiter MOID = 2.28333 au 
 T_jup = 3.570 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.003659841982448E-15 -2.342567781759024E-15 6.307351037419693E-14 -6.439400455068508E-16 2.770159972320057E-14 -2.452400503574767E-16
q -2.342567781759024E-15 5.506433664422635E-15 -1.598755008080371E-13 1.820351654972178E-15 -6.714469095446353E-14 5.960429935808159E-16
tp 6.307351037419693E-14 -1.598755008080371E-13 1.498938655392535E-9 6.258329826999791E-12 4.135884693452446E-10 1.69240488834354E-13
node -6.439400455068508E-16 1.820351654972178E-15 6.258329826999791E-12 9.519995728173709E-9 -9.511896781290847E-9 2.050579020988191E-11
peri 2.770159972320057E-14 -6.714469095446353E-14 4.135884693452446E-10 -9.511896781290847E-9 9.628108688722881E-9 -2.045080437524761E-11
i -2.452400503574767E-16 5.960429935808159E-16 1.69240488834354E-13 2.050579020988191E-11 -2.045080437524761E-11 1.256825531043114E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO365390  
diameter diameter 4.812 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.331653 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.175   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11675 Billboyle           Discovered 1998 Feb. 15 by P. Antonini at Bedoin.
William Boyle (b. 1924) co-invented the CCD while at Bell Laboratories in 1969. This device has revolutionized both amateur and professional astronomy. This minor planet was automatically detected by a CCD during an amateur survey.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000726/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1998 CP2 = 1981 LG = 1991 CU4 = 1996 TM8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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