174 Phaedra

Main-belt asteroid October 2019 yes (174) Phaedra #D6D6D6 174 Phaedra A877 RA ' f iː d r əNoah Webster (1884) A Practical Dictionary of the English Language 174Phaedra (Lightcurve Inversion).png A three-dimensional model of 174 Phaedra based on its lightcurve J. C. Watson 2 September 1877 Main belt 2.8615 AU Gm on 2.4572 AU Gm on 3.2658 AU Gm on on 4.84 yr (1768.0 d) 12.124° 0.14128 5.744 h d on on S 8.48 0.1495 0.021 31 July 2016 (JD 2457600.5) 327.69° 289.08° 330.70° 0.20362 ms / day 138.61 yr (50629 d) 0 34.62 2.2 km 1.47439 AU Gm on 1.99981 AU Gm on 3.254 174 Phaedra is a sizable, rocky main belt asteroid that was discovered by Canadian-American astronomer James Craig Watson on September 2, 1877, and named after Phaedra, the tragic lovelorn queen in Greek mythology. The asteroid is orbiting the Sun with a period of 4.84 years and an eccentricity of 0.14. Lightcurve data obtained from Phaedra indicates a rather irregular or elongated body. It has a cross-section size of ~35 km. Photometric observations of this asteroid at the Shadowbox Observatory in Carmel, Indiana, during 2009 gave a light curve with a period of 4.96 ± 0.01 hours. This is consistent with previous studies in 1977, 1988, and 2008. The asteroid's pole of rotation lies just 5–16° away from the plane of the ecliptic. References Donald K. Yeomans 174 Phaedra JPL Small-Body Database Browser NASA Jet Propulsion Laboratory https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=174 6 May 2016 . Ruthroff John C. Photometric Observations and Lightcurve Analysis of Asteroids 129 Antigone, 174 Phaedra, 232 Russia, 291 Alice, and 343 Ostara The Minor Planet Bulletin 36 3 121–122 2009MPBu...36..121R . July 2009 Photometry and models of selected main belt asteroids. VIII. Low-pole asteroids 1 Marciniak A. Michałowski T. Polińska M. Bartczak P. Hirsch R. Sobkowiak K. Kamiński K. Fagas M. Behrend R. Bernasconi L. Bosch J. -G. Brunetto L. Choisay F. Coloma J. Conjat M. Farroni G. Manzini F. Pallares H. Roy R. Kwiatkowski T. Kryszczyńska A. Rudawska R. Starczewski S. Michałowski J. Ludick P. Astronomy & Astrophysics 529 A107 14 May 2011 10.1051/0004-6361/201015365 2011A&A...529A.107M free External links 174 173 Ino 174 175 Andromache Category:Background asteroids Phaedra Phaedra Category:S-type asteroids (Tholen) Category:S-type asteroids (SMASS) 18770902 Category:Phaedra (mythology)