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18242 Peebles (2102 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2018242
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1474386213901517 5.0267e-08  
a 2.353690898976465 1.1362e-08 au
q 2.006665957652828 1.1627e-07 au
i 2.541390730672444 5.7079e-06 deg
node 22.93019683751497 9.7679e-05 deg
peri 143.1283338566868 9.9443e-05 deg
M 176.9829887635715 1.7363e-05 deg
tp 2458352.087179670131
(2018-Aug-21.58717967)
6.2541e-05 TDB
period 1318.932497125958
3.61
9.5502e-06
2.615e-08
d
yr
n .272948009685457 1.9764e-09 deg/d
Q 2.700715840300102 1.3037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      809  
   data-arc span      16538 days (45.28 yr)  
   first obs. used      1973-09-24  
   last obs. used      2019-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51812  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:33:30  

Additional Information
 Earth MOID = 1.01433 au 
 Jupiter MOID = 2.27027 au 
 T_jup = 3.540 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO435868  
rotation period rot_per 4.249 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

18242 Peebles           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Princeton theoretical cosmologist Jim Peebles (b. 1935) plays a central role in the understanding of the evolution and structure of the universe. His studies of the evolution of matter in the earliest moments of the universe were critical in the establishment of the Big Bang theory as a widely accepted hypothesis.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040306/MPCPages.arcLast Updated: 2004-03-08

Alternate Designations
 2102 T-2 = 1995 WO10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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