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JPL Small-Body Database Browser
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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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 
[ hide covariance matrix ]
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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