604 Tekmessa
Tekmessa (minor planet designation: 604 Tekmessa) is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on February 16, 1906. The name may have been inspired by the asteroid's provisional designation 1906 TK.
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 16 February 1906 |
| Designations | |
| (604) Tekmessa | |
| Pronunciation | /tɛkˈmɛsə/[1] |
| 1906 TK | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 104.87 yr (38303 d) |
| Aphelion | 3.7742 AU (564.61 Gm) |
| Perihelion | 2.5217 AU (377.24 Gm) |
| 3.1480 AU (470.93 Gm) | |
| Eccentricity | 0.19894 |
| 5.59 yr (2040.1 d) | |
| 351.53° | |
| 0° 10m 35.256s / day | |
| Inclination | 4.4213° |
| 12.171° | |
| 28.815° | |
| Physical characteristics | |
Mean radius | 32.58±2.05 km[2] 32.21 ± 1.505 km[3] |
| Mass | (1.45 ± 0.28) × 1018 kg[3] |
Mean density | 10.35 ± 2.4 g/cm3[3] |
| 5.5596 h (0.23165 d) | |
| 0.0870±0.012 | |
| 9.29,[4] 9.5[2] | |
References
- 'Tecmessa' in Noah Webster (1884) A Practical Dictionary of the English Language
- Yeomans, Donald K., "604 Tekmessa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
- Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
External links
- 604 Tekmessa at AstDyS-2, Asteroids—Dynamic Site
- 604 Tekmessa at the JPL Small-Body Database
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