603 Timandra

603 Timandra
Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	16 February 1906
Designations
MPC designation	(603) Timandra
Pronunciation	/tɪˈmændrə/
Alternative designations	1906 TJ
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	110.08 yr (40205 d)
\|{{{apsis}}}\|helion}}	2.9809 astronomical unit\|AU (445.94 Gm)
\|{{{apsis}}}\|helion}}	2.0947 AU (313.36 Gm)
Semi-major axis	2.5378 AU (379.65 Gm)
Eccentricity	0.17460
Orbital period	4.04 yr (1476.7 d)
Mean anomaly	87.1291°
Mean motion	0° 14m 37.644s / day
Inclination	8.0265°
Longitude of ascending node	343.455°
\|{{{apsis}}}\|helion}}	159.764°
Physical characteristics
Mean radius	6.865±0.45 km
Rotation period	41.79 h (1.741 d)
Geometric albedo	0.1354±0.019
Absolute magnitude (H)	11.8

Timandra (minor planet designation: 603 Timandra) is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on February 16, 1906, in Taunton, Massachusetts.

Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a long rotation period of 41.79 ± 0.02 hours and a brightness variation of 0.10 ± 0.02 in magnitude.^[3]

References

↑ Noah Webster (1884) A Practical Dictionary of the English Language
↑ ^2.0 ^2.1 Yeomans, Donald K., "603 Timandra", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=603, retrieved 5 May 2016.
↑ ^3.0 ^3.1 Pilcher, Frederick (April 2011), "Rotation Period Determinations for 25 Phocaea, 140 Siwa, 149 Medusa 186 Celuta, 475 Ocllo, 574 Reginhild, and 603 Timandra", The Minor Planet Bulletin 38 (2): pp. 76–78, Bibcode: 2011MPBu...38...76P.

External links

603 Timandra at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
603 Timandra at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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

[JPL-2] 2.0 ^2.1 Yeomans, Donald K., "603 Timandra", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=603, retrieved 5 May 2016.

[Pilcher2011-3] 3.0 ^3.1 Pilcher, Frederick (April 2011), "Rotation Period Determinations for 25 Phocaea, 140 Siwa, 149 Medusa 186 Celuta, 475 Ocllo, 574 Reginhild, and 603 Timandra", The Minor Planet Bulletin 38 (2): pp. 76–78, Bibcode: 2011MPBu...38...76P.