523 Ada
Ada (minor planet designation: 523 Ada) is a minor planet orbiting the Sun. It was discovered January 29, 1904, by American astronomer Raymond S. Dugan at Heidelberg, Germany and was named after his friend Ada Helme. CCD images collected during the fall of 2004 at Oakley Observatory in Terre Haute, Indiana, were used to generate a lightcurve for the object, showing a rotation period of 10.03 ± 0.01 hours.[2]
| Discovery | |
|---|---|
| Discovered by | Raymond Smith Dugan |
| Discovery site | Heidelberg |
| Discovery date | 27 January 1904 |
| Designations | |
| (523) Ada | |
| 1904 ND | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.46 yr (41442 d) |
| Aphelion | 3.4869 AU (521.63 Gm) |
| Perihelion | 2.4517 AU (366.77 Gm) |
| 2.9693 AU (444.20 Gm) | |
| Eccentricity | 0.17432 |
| 5.12 yr (1868.9 d) | |
| 31.6678° | |
| 0° 11m 33.468s / day | |
| Inclination | 4.2955° |
| 260.837° | |
| 189.461° | |
| Physical characteristics | |
Mean radius | 15.945±0.75 km |
| 10.03 ± 0.01 hr[2] 10.03 h (0.418 d)[1] | |
| 0.2512±0.026[1] | |
| 9.9[1] | |
References
- "JPL Small-Body Database Browser: 523 Ada (1904 ND)". Jet Propulsion Laboratory. Retrieved 8 May 2016.
- Lecrone, Crystal; Mills, George; Ditteon, Richard (September 2005), "Lightcurves and periods for asteroids 463 Lola, 523 Ada, 544 Jetta, 642 Clara, 883 Matterania, 6475 Refugium", The Minor Planet Bulletin, 32 (3): 62–64, Bibcode:2005MPBu...32...62L.
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