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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .081080604121089 4.4444e-08  
a 3.15745697030525 2.1489e-08 au
q 2.901448451666557 1.4029e-07 au
i 22.85397100112797 4.2342e-06 deg
node 153.8125198757221 1.2583e-05 deg
peri 63.93922762237082 3.1766e-05 deg
M 52.10784060521237 2.7072e-05 deg
tp 2458903.876767642958
(2020-Feb-24.37676764)
0.00015521 TDB
period 2049.295507322434
5.61
2.0921e-05
5.728e-08
d
yr
n .1756701260085073 1.7934e-09 deg/d
Q 3.413465488943943 2.3232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      10828 days (29.65 yr)  
   first obs. used      1991-02-20  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52556  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:23:31  

Additional Information
 Earth MOID = 1.96747 au 
 Jupiter MOID = 1.69319 au 
 T_jup = 3.079 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457465.5 (2016-Mar-18.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08036037464301136 4.4376e-08  
q 2.903777658505637 1.4014e-07 au
tp 2456849.010418587045
(2014-Jul-10.51041859)
0.00016561 TDB
node 153.8531325830385 1.2586e-05 deg
peri 62.81361828400438 3.203e-05 deg
i 22.84969830631799 4.2339e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      10828 days (29.65 yr)  
   first obs. used      1991-02-20  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52556  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:23:31  

Additional Information
 Jupiter MOID = 1.69319 au 
 T_jup = 3.079 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.969268039898168E-15 -6.156125582238028E-15 9.467990217118502E-14 -2.306047110287826E-15 2.67362335218693E-14 -1.178187840348725E-14
q -6.156125582238028E-15 1.963979464234109E-14 -1.823488583366479E-12 5.861919046225625E-15 -3.382609471861616E-13 4.047122676978214E-14
tp 9.467990217118502E-14 -1.823488583366479E-12 2.742682058799048E-8 4.507514579079516E-11 4.915319485370689E-9 -1.530091163507353E-11
node -2.306047110287826E-15 5.861919046225625E-15 4.507514579079516E-11 1.584024582603985E-10 -1.374831883021621E-10 8.081699183683566E-12
peri 2.67362335218693E-14 -3.382609471861616E-13 4.915319485370689E-9 -1.374831883021621E-10 1.025951340943491E-9 -9.988647401507039E-12
i -1.178187840348725E-14 4.047122676978214E-14 -1.530091163507353E-11 8.081699183683566E-12 -9.988647401507039E-12 1.792550986825786E-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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