Phaëtusa (minor planet designation: 296 Phaëtusa) is a small Main belt asteroid.[2] It was discovered by Auguste Charlois on 19 August 1890 in Nice.
![]() Modelled shape of Phaëtusa from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 19 August 1890 |
| Designations | |
MPC designation | (296) Phaëtusa |
| Pronunciation | /feɪ.əˈtjuːsə/[1] |
Named after | Phaethusa |
Alternative designations | A890 QB, 1917 XB 1930 YH |
Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.28 yr (31149 d) |
| Aphelion | 2.58669 AU (386.963 Gm) |
| Perihelion | 1.87025 AU (279.785 Gm) |
Semi-major axis | 2.22847 AU (333.374 Gm) |
| Eccentricity | 0.16075 |
Orbital period (sidereal) | 3.33 yr (1215.1 d) |
Average orbital speed | 19.95 km/s |
Mean anomaly | 272.510° |
Mean motion | 0° 17m 46.586s / day |
| Inclination | 1.74738° |
Longitude of ascending node | 121.585° |
Argument of perihelion | 252.628° |
| Physical characteristics | |
| Dimensions | 7 - 15 km |
Synodic rotation period | 4.5385 h (0.18910 d) |
Absolute magnitude (H) | 12.62 |
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