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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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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457490.5 (2016-Apr-12.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08036558289662356 4.3055e-08  
q 2.903795721091045 1.3649e-07 au
tp 2456849.067513077729
(2014-Jul-10.56751308)
0.00016549 TDB
node 153.8531240755851 1.2223e-05 deg
peri 62.82430697827358 3.1859e-05 deg
i 22.84956701468569 4.2155e-06 deg
  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
 Jupiter MOID = 1.69319 au 
 T_jup = 3.079 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.853713269190073E-15 -5.814250214526903E-15 1.560440525693576E-13 -2.149231422913538E-15 4.135281391613516E-14 -1.123985411776913E-14
q -5.814250214526903E-15 1.862849528400548E-14 -2.005458454184408E-12 5.130703018435304E-15 -3.813565934251909E-13 3.882902772988047E-14
tp 1.560440525693576E-13 -2.005458454184408E-12 2.738815262748413E-8 4.866096096038203E-11 4.902966466285223E-9 -1.510451050139524E-11
node -2.149231422913538E-15 5.130703018435304E-15 4.866096096038203E-11 1.494040315414996E-10 -1.285573351698362E-10 6.909513271440477E-12
peri 4.135281391613516E-14 -3.813565934251909E-13 4.902966466285223E-9 -1.285573351698362E-10 1.015015550483313E-9 -8.891538436737391E-12
i -1.123985411776913E-14 3.882902772988047E-14 -1.510451050139524E-11 6.909513271440477E-12 -8.891538436737391E-12 1.777011278660001E-11

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

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