189 Phthia
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| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.450 AU |
| Perihelion distance | 2.360 AU |
| Aphelion distance | 2.541 AU |
| Orbital period | 3.84 years |
| Inclination | 5.18° |
| Eccentricity | 0.037 |
| Physical characteristics 1 | |
| Diameter | 37.7 km |
| Rotation period | 15 hours |
| Spectral class | S |
| Abs. magnitude | 9.33 |
| Albedo 4 | 0.231 |
| History 2 | |
| Discoverer | C. H. F. Peters, 1878 |
189 Phthia is a bright-coloured, rocky main belt asteroid.
It was discovered by C. H. F. Peters on September 9, 1878 in Clinton, New York and named after Phthia, a region of Ancient Greece.
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