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65100 Birtwhistle (2002 CR15)
Classification: Main-belt Asteroid          SPK-ID: 2065100
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08108060280782084 4.3136e-08  
a 3.157456977928335 2.1367e-08 au
q 2.901448462818145 1.3666e-07 au
i 22.85397102737472 4.2158e-06 deg
node 153.812520013358 1.222e-05 deg
peri 63.93922603212503 3.159e-05 deg
M 52.10784172108237 2.7063e-05 deg
tp 2458903.876760216670
(2020-Feb-24.37676022)
0.00015515 TDB
period 2049.295514743891
5.61
2.0802e-05
5.695e-08
d
yr
n .1756701253723238 1.7832e-09 deg/d
Q 3.413465493038524 2.31e-08 au
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      10828 days (29.65 yr)  
   first obs. used      1991-02-20  
   last obs. used      2020-10-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52438  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:13:15  

Additional Information
 Earth MOID = 1.96747 au 
 Jupiter MOID = 1.69319 au 
 T_jup = 3.079 
[ 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 14.13   n/a E2020-QM9  
diameter diameter 9.473 km 0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

65100 Birtwhistle           Discovered 2002 Feb. 8 by C. W. Juels and P. R. Holvorcem at Fountain Hills.
British amateur astronomer Peter Birtwhistle (b. 1958) was measuring positions of comets and NEAs photographically during 1982-1986 and in 2002 began CCD astrometry in Great Shefford, Berkshire. On 2003 Sept. 29 he provided confirmation of 2003 SQ222, whose passage at 84~000 km from the earth is the closest known.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040107/MPCPages.arcLast Updated: 2004-01-07

[ show close-approach data ]
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