604 Tekmessa

604 Tekmessa
Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	16 February 1906
Designations
MPC designation	(604) Tekmessa
Pronunciation	/tɛkˈmɛsə/
Alternative designations	1906 TK
Orbital characteristics
	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)
Semi-major axis	3.1480 AU (470.93 Gm)
Eccentricity	0.19894
Orbital period (sidereal)	5.59 yr (2040.1 d)
Mean anomaly	351.53°
Mean motion	0° 10m 35.256s / day
Inclination	4.4213°
Longitude of ascending node	12.171°
Argument of perihelion	28.815°
Physical characteristics
Mean radius	32.58±2.05 km; 32.21 ± 1.505 km
Mass	(1.45 ± 0.28) × 1018 kg
Mean density	10.35 ± 2.4 g/cm3
Synodic rotation period	5.5596 h (0.23165 d)
Geometric albedo	0.0870±0.012
Absolute magnitude (H)	9.29, 9.5

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.

References[]

^ 'Tecmessa' in Noah Webster (1884) A Practical Dictionary of the English Language
^ ^a ^b ^c Yeomans, Donald K., "604 Tekmessa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.
^ ^a ^b ^c 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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
604 Tekmessa at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[1] 'Tecmessa' in Noah Webster (1884) A Practical Dictionary of the English Language

[JPL-2] Yeomans, Donald K., "604 Tekmessa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 7 May 2016.

[Carry2012-3] 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.

[Warner2007-4] 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.

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