[ show orbit diagram ]
Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .5382682165635682 | 1.1296e-05 | |
| a | 37.93211763881521 | 0.0010094 | AU |
| q | 17.51446432689068 | 3.8264e-05 | AU |
| i | 2.427210951692876 | 2.8761e-05 | deg |
| node | 351.9287622566157 | 0.00047835 | deg |
| peri | 158.8594294905746 | 0.00056954 | deg |
| M | 10.70840333543049 | 0.00038301 | deg |
| tp | 2453862.268205322457
(2006-May-06.76820532) | 0.019723 | JED |
| period | 85331.43713970702
233.62 | 3.4062
0.009326 | d
yr |
| n | .004218843747007307 | 1.684e-07 | deg/d |
| Q | 58.34977095073975 | 0.0015528 | AU |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
7.2487 |
mag |
.59524 |
23 |
autocmod 2.5c |
| rotation period |
rot_per |
5. |
h |
n/a |
Asteroid Lightcurve DataBase (Rev. 2013-May-01) |
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.arc | Last Updated: 2006-11-13 |
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