.png) A three-dimensional model of 174 Phaedra based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. C. Watson |
| Discovery date | 2 September 1877 |
| Designations | |
| (174) Phaedra | |
| Pronunciation | /ˈfiːdrə/[1] |
| A877 RA | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 138.61 yr (50629 d) |
| Aphelion | 3.2658 AU (488.56 Gm) |
| Perihelion | 2.4572 AU (367.59 Gm) |
| 2.8615 AU (428.07 Gm) | |
| Eccentricity | 0.14128 |
| 4.84yr (1768.0d) | |
| 330.70° | |
| 0° 12m 13.032s / day | |
| Inclination | 12.124° |
| 327.69° | |
| 289.08° | |
| Earth MOID | 1.47439 AU (220.566 Gm) |
| Jupiter MOID | 1.99981 AU (299.167 Gm) |
| TJupiter | 3.254 |
| Physical characteristics | |
| 34.62±2.2km | |
| 5.744 h (0.2393 d) | |
| 0.1495±0.021 | |
| S | |
| 8.48 | |
174 Phaedra is a sizable, rockymain beltasteroid that was discovered by Canadian-American astronomerJames Craig Watson on September 2, 1877, and named afterPhaedra, the tragic lovelorn queen inGreek mythology.
The asteroid is orbiting theSun with aperiod of 4.84 years and aneccentricity 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 inCarmel, Indiana, during 2009 gave alight curve with a period of 4.96 ± 0.01 hours. This is consistent with previous studies in 1977, 1988, and 2008.[3] The asteroid'spole of rotation lies just 5–16° away from theplane of the ecliptic.[4]
_mathilde.jpg) | This article about an S-type asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
