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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629691409500875 2.5804e-08  
a 2.303408659252554 6.2543e-09 au
q 1.928024128797173 5.8895e-08 au
i 2.047629766508003 3.2579e-06 deg
node 181.3604557820902 8.1499e-05 deg
peri 29.58598773141915 8.2138e-05 deg
M 187.9669950895609 1.1351e-05 deg
tp 2460006.688746855351
(2023-Mar-03.18874686)
4.1252e-05 TDB
period 1276.894215631971
3.50
5.2006e-06
1.424e-08
d
yr
n .2819340831783984 1.1483e-09 deg/d
Q 2.678793189707936 7.2736e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2470  
   data-arc span      14474 days (39.63 yr)  
   first obs. used      1981-06-04  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47449  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:57:19  

Additional Information
 Earth MOID = .923431 au 
 Jupiter MOID = 2.28165 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 14.46   n/a MPCxxxxx  
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. 2020-October); 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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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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