| Discovery | |
|---|---|
| Discovered by: | Johann Palisa |
| Discovery date: | October 13, 1879 |
| Orbital characteristics | |
| Epoch 30 January, 2005 (JD 2453400.5) | |
| Aphelion | 430.602 Gm (2.878 AU) |
| Perihelion: | 400.314 Gm (2.676 AU) |
| Semi-major axis: | 415.458 Gm (2.777 AU) |
| Eccentricity: | 0.036 |
| Orbital period: | 1690.412 d (4.63 a) |
| Avg. orbital speed: | 17.87 km/s |
| Mean anomaly: | 29.923° |
| Inclination: | 10.695° |
| Longitude of ascending node: | 212.069° |
| Argument of perihelion: | 171.423° |
| Physical characteristics | |
| Dimensions: | 81.0 km |
| Mass: | unknown |
| Mean density: | unknown |
| Equatorial surface gravity: | unknown |
| Escape velocity: | unknown |
| Rotation period: | 9.637 h |
| Albedo: | 0.054 |
| Temperature: | unknown |
| Spectral type: | C |
| Absolute magnitude: | 9.23 |
205 Martha is a large Main belt asteroid. It is a dark, primitive carbonaceous C-type asteroid. It was discovered by Johann Palisa on October 13, 1879 in Pola and was named after Martha, a woman in the New Testament.
References
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Parameters
- Asteroid Albedo Compilation
| Minor planets (see full list) |
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|---|---|---|
| Previous minor planet | 205 Martha | Next minor planet |
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| Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Neptune Trojans · Comets · Trans-Neptunians (Kuiper belt • Scattered disc objects • Oort cloud) |
| For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons, meteoroids and the Solar System. For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
