822 Lalage
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_Lalage.png) Modelled shape of Lalage from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 31 March 1916 |
| Designations | |
| (822) Lalage | |
| Pronunciation | /ˈlælədʒiː/[2] |
Named after | unknown Lalage[3] |
| A916 GJ · 1943 EJ1 1916 ZD | |
| Orbital characteristics[4] | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 103.84 yr (37,929 d) |
| Aphelion | 2.6064 AU |
| Perihelion | 1.9043 AU |
| 2.2554 AU | |
| Eccentricity | 0.1556 |
| 3.39 yr (1,237 d) | |
| 342.25° | |
| 0° 17m 27.6s / day | |
| Inclination | 0.7172° |
| 210.11° | |
| 247.21° | |
| Physical characteristics | |
| 3.345±0.001 h[9] | |
Pole ecliptic latitude | |
| 12.1[1][4] | |
822 Lalage (prov. designation: A916 GJ or 1916 ZD) is a background asteroid from the inner regions of the asteroid belt. It was discovered on 31 March 1916, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The likely highly elongated asteroid with an unclear spectral type has a short rotation period of 3.3 hours and measures approximately 9 kilometers (5.6 miles) in diameter. Any reference to the origin of the asteroid's name is unknown.[3]
Lalage is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[5][6] It orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,237 days; semi-major axis of 2.26 AU). Its orbit has an eccentricity of 0.16 and an inclination of 1° with respect to the ecliptic.[4] The body's observation arc begins at the Bergedorf Observatory on 6 April 1916, one week after its official discovery observation at Heidelberg.[1]
Naming
Any reference of this minor planet's name to a person or occurrence is unknown.[3]
Unknown meaning
Among the many thousands of named minor planets, Lalage is one of 120 asteroids for which no official naming citation has been published. All of these asteroids have low numbers, the first one being 164 Eva. The last asteroid with a name of unknown meaning is 1514 Ricouxa. They were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.[11]
