468 Lina
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| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 18 January 1901 |
| Designations | |
| (468) Lina | |
| Pronunciation | German: [ˈliːnaː][2] |
Named after | (household employee)[3] |
| 1901 FZ · A915 PA A918 EB | |
| main-belt · Themis[4] | |
| Orbital characteristics[1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 115.81 yr (42,300 days) |
| Aphelion | 3.7509 AU |
| Perihelion | 2.5136 AU |
| 3.1323 AU | |
| Eccentricity | 0.1975 |
| 5.54 yr (2,025 days) | |
| 64.042° | |
| 0° 10m 40.08s / day | |
| Inclination | 0.4371° |
| 21.472° | |
| 333.20° | |
| Physical characteristics | |
| Dimensions | 58.60±14.75 km[5] 59.7±0.5 km[6][7] 59.80±0.89 km[8] 60.238±0.518 km[9] 63.4±12.7 km[10] 64.592±1.981 km[11] 66±7 km[12] 69.34±2.5 km (IRAS:6)[13] |
| 16.33±0.02 h[14] 16.478±0.004 h[15] 16.54±0.01 h[15] | |
| 0.0430±0.003 (IRAS:6)[13] 0.0495±0.0094[11] 0.05±0.01[12] 0.05±0.02[10] 0.057±0.009[9] 0.058[6] 0.059±0.002[8] 0.06±0.01[7] 0.06±0.06[5] | |
| Tholen = CPF[1] · P[11] · CPF[4] B–V = 0.660[1] U–B = 0.313[1] | |
| 9.61[7] · 9.70±0.25[16] · 9.77[5] · 9.83[1][4][6][8][9][10][11][12][13] | |
468 Lina, provisional designation 1901 FZ, is a dark Themistian asteroid from the outer region of the asteroid belt, approximately 60 kilometers (37 miles) in diameter. It was discovered on 18 January 1901, by German astronomer Max Wolf at the Heidelberg Observatory in southwest Germany.[17] The carbonaceous asteroid was named for the housemaid of the discoverer's family.[3]
Lina is a core member of the Themis family, an ancient population of carbonaceous outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.5–3.8 AU once every 5 years and 6 months (2,025 days). Its orbit has an eccentricity of 0.20 and an inclination of 0.4° with respect to the ecliptic.[1] Lina was first observed at Heidelberg a few days prior to its official discovery observation. The body's observation arc begins with its identification as 1915 PA at Heidelberg in 1915, or 14 years after its official discovery observation.[17]
Naming
This minor planet was named for "Lina", a domestic housemaid of the discoverer's family at Heidelberg.[3] The members of Max Wolf's household figure prominently in the names of his discoveries, but background information on the name's origin behind most of them have been lost. Wolf also named 482 Petrina and 483 Seppina after the household's two dogs, a practice that was later discouraged by the IAU.[18] Naming citation for Lina was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 51).[3]
