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42355 Typhon (2002 CR46)
Classification: TransNeptunian Object          SPK-ID: 2042355
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5401540392936269 1.1305e-05  
a 38.1075232081006 0.0010187 AU
q 17.52359061976943 3.8318e-05 AU
i 2.425475765517868 2.8747e-05 deg
node 351.9128057495946 0.00047865 deg
peri 159.0392585329338 0.00057047 deg
M 12.26421083259525 0.00044608 deg
tp 2453873.305246299667
(2006-May-17.80524630)
0.019795 JED
period 85924.00487207917
235.25
3.4454
0.009433
d
yr
n .004189748843014896 1.68e-07 deg/d
Q 58.69145579643176 0.001569 AU
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      8498 days (23.27 yr)  
   first obs. used      1989-12-28  
   last obs. used      2013-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      1  
   fit RMS      .61028  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 02:31:06  

Additional Information
 Earth MOID = 16.535 AU 
 T_jup = 4.687 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.5 mag n/a MPO259630  
rotation period rot_per 5. h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Dotto, E.; Pema, D.; Barucci, M.A.; Rossi, A. et al. (2008) Astron. Astrophys. 490, 829-833.]
[Perna, D.; Dotto, E.; Barucci, M.A.; Rossi, A.; et al. (2008) Bul. Amer. Astron. Soc. 40, 483 (47.08).]

42355 Typhon           Discovered 2002 Feb. 5 by NEAT at Palomar.
The secondary object (42355) Typhon I, discovered 2006 Jan. 20 by K. Noll, W. Grundy, D. Stephens and H. Levison using the Hubble Space Telescope, is named Echidna for the mother of all the major monsters in classical Greek mythology. Half nymph and half snake, Echidna lives, immortal, in a deep cave called Arima.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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