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JPL Small-Body Database Browser
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172090 Davidmccomas (2002 CL257)
Classification: Outer Main-belt Asteroid          SPK-ID: 2172090
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1081069574631114 1.0317e-07  
a 3.216455754610479 4.4227e-08 au
q 2.868734509164824 3.4644e-07 au
i 1.796347170673733 7.9818e-06 deg
node 148.3305976445799 0.00021199 deg
peri 67.99524030360955 0.00021472 deg
M 348.2565268263492 3.933e-05 deg
tp 2459069.231980563099
(2020-Aug-07.73198056)
0.00023087 TDB
period 2107.001279505081
5.77
4.3458e-05
1.19e-07
d
yr
n .1708589375344667 3.524e-09 deg/d
Q 3.564177000056135 4.9009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      6544 days (17.92 yr)  
   first obs. used      2002-02-06  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 21:45:02  

Additional Information
 Earth MOID = 1.86236 au 
 Jupiter MOID = 1.40318 au 
 T_jup = 3.180 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456716.5 (2014-Feb-28.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1079086618710386 1.035e-07  
q 2.869824336676082 3.4745e-07 au
tp 2456954.881706140073
(2014-Oct-24.38170614)
0.00021055 TDB
node 148.3459160369651 0.0002121 deg
peri 67.0468156588401 0.00021477 deg
i 1.795682463708755 7.9802e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      208  
   data-arc span      6544 days (17.92 yr)  
   first obs. used      2002-02-06  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59029  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 21:45:02  

Additional Information
 Jupiter MOID = 1.40318 au 
 T_jup = 3.180 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.071186854882097E-14 -3.575154288083622E-14 -1.11526752298458E-11 6.94800012341382E-14 -1.377173886648872E-12 1.95232508222428E-15
q -3.575154288083622E-14 1.207182817566425E-13 3.856054262569422E-11 -2.113663524116048E-13 4.749870278218764E-12 -3.672851925448569E-15
tp -1.11526752298458E-11 3.856054262569422E-11 4.432923929575913E-8 -7.5968559009529E-11 7.115444468183077E-9 2.759846900584182E-12
node 6.94800012341382E-14 -2.113663524116048E-13 -7.5968559009529E-11 4.498554538157696E-8 -4.497104172684684E-8 5.552530585588529E-10
peri -1.377173886648872E-12 4.749870278218764E-12 7.115444468183077E-9 -4.497104172684684E-8 4.612650875061641E-8 -5.543209683275933E-10
i 1.95232508222428E-15 -3.672851925448569E-15 2.759846900584182E-12 5.552530585588529E-10 -5.543209683275933E-10 6.368430785656238E-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 15.6   n/a MPO427050  

172090 Davidmccomas           Discovered 2002 Feb. 6 by M. W. Buie at Kitt Peak.
David J. McComas (b. 1958), a Professor of Astrophysical Sciences at Princeton University, served as a Co-Investigator on the Particles and Plasma Science Team for the New Horizons Mission to Pluto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-05-29Last Updated: 2018-09-17

[ show close-approach data ]
Alternate Designations
 2002 CL257 = 2006 WS111 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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