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8537 Billochbull (1993 FG24)
Classification: Main-belt Asteroid          SPK-ID: 2008537
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1049140292794748 2.2657e-08  
a 3.038815609360777 1.3082e-08 au
q 2.720001219545376 7.2419e-08 au
i 9.935102089498628 8.1572e-07 deg
node 194.0537169988472 3.9329e-06 deg
peri 97.73930414214148 1.3654e-05 deg
M 350.5533783534028 1.4607e-05 deg
tp 2459251.272549351816
(2021-Feb-05.77254935)
7.8577e-05 TDB
period 1934.884072893699
5.30
1.2495e-05
3.421e-08
d
yr
n .1860576584630237 1.2015e-09 deg/d
Q 3.357629999176178 1.4455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2433  
   data-arc span      24462 days (66.97 yr)  
   first obs. used      1953-10-10  
   last obs. used      2020-09-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48751  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:41:46  

Additional Information
 Earth MOID = 1.72561 au 
 Jupiter MOID = 1.86321 au 
 T_jup = 3.209 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.49   n/a MPCxxxxx  
diameter diameter 11.540 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.74982 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.167   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

8537 Billochbull           Discovered 1993 Mar. 21 by C.-I. Lagerkvist at the European Southern Observatory.
Named for the fictional cats Bill and Bull, dim and fawning cronies of the bad cat Måns of the Knutsson stories.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990202/MPCPages.arcLast Updated: 2010-06-11

[ show close-approach data ]
Alternate Designations
 1993 FG24 = 1977 FX1 = 1988 HB1 = 1995 SS29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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