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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1621158206992948 3.1736e-08  
a 2.304004730485117 7.5271e-09 au
q 1.930489112707465 7.4305e-08 au
i 2.046465124225179 3.5461e-06 deg
node 181.4090219300641 9.748e-05 deg
peri 29.73999143601276 9.8033e-05 deg
M 323.4716161211941 1.1241e-05 deg
tp 2458730.113856867774
(2019-Sep-03.61385687)
4.0048e-05 TDB
period 1277.389895682513
3.50
6.2598e-06
1.714e-08
d
yr
n .2818246811069778 1.3811e-09 deg/d
Q 2.67752034826277 8.7473e-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 = .925415 au 
 Jupiter MOID = 2.2862 au 
 T_jup = 3.571 
[ show covariance matrix ]

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-January); 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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