 Orbit of 1133 Lugduna | |
| Discovery[1] | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 13 September 1929 |
| Designations | |
| (1133) Lugduna | |
Named after | Dutch city ofLeiden[2] (Lugdunum Batavorum) |
| 1929 RC1 · A908 BD | |
| main-belt · Flora[3][4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.20 yr (31,848 days) |
| Aphelion | 2.5966AU |
| Perihelion | 1.7751 AU |
| 2.1858 AU | |
| Eccentricity | 0.1879 |
| 3.23yr (1,180 days) | |
| 67.197° | |
| 0° 18m 18s / day | |
| Inclination | 5.3765° |
| 58.230° | |
| 306.74° | |
| Physical characteristics | |
| Dimensions | 8.275±0.019 km[5] 9.100±0.037 km[6] 9.76 km(calculated)[3] 10.47±0.70 km[7] |
| 5h[a] 5.477±0.001 h[8] 5.478±0.005 h[9] | |
| 0.208±0.029[7] 0.24(assumed)[3] 0.2798±0.0550[6] 0.363±0.029[5] | |
| Tholen =S[1][3][10] B–V = 0.880[1] U–B = 0.510[1] | |
| 12.22[1][3][6][7] · 12.45±0.50[10] | |
1133 Lugduna, provisional designation1929 RC1, is a stony Florianasteroid from the inner regions of theasteroid belt, approximately 9.5 kilometers in diameter. It was discovered on 13 September 1929, by Dutch astronomerHendrik van Gent at the Leiden Southern Station annex to theUnion Observatory in Johannesburg, South Africa.[11] The asteroid was named in honor of the city ofLeiden in the Netherlands.[2]
Lugduna is a member of theFlora family (402), a giantasteroid family and the largest family of stony asteroids in the main-belt.[3][4][12]: 23 It orbits the Sun in theinner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,180 days). Its orbit has aneccentricity of 0.19 and aninclination of 5° with respect to theecliptic.[1]
The asteroid was first identified asA908 BD at Taunton Observatory (803), Massachusetts, in January 1908. Itsobservation arc begins at Johannesburg, three weeks after its official discovery observation.[11]
Both theTholen classification andPanSTARRS photometric survey characterizeLugduna as a stonyS-type asteroid.[1][10]
In December 2010, the best-rated rotationallightcurve ofLugduna was obtained from photometric observations by Gordon Gartrelle at theUniversity of North Dakota and at theBadlands Observatory in South Dakota, United States. Analysis of the bimodal lightcurve gave a well-definedrotation period of 5.477 hours with a brightness variation of 0.43magnitude (U=3).[8] Other observations gave a period of 5 and 5.478 hours with an amplitude of 0.33 (U=2-/3-).[9][a]
According to the surveys carried out by the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Lugduna measures between 8.275 and 10.47 kilometers in diameter and its surface has analbedo between 0.208 and 0.363.[5][6][7]
TheCollaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from8 Flora, the Flora family's largest member and namesake – and calculates a diameter of 9.76 kilometers based on anabsolute magnitude of 12.22.[3]
Thisminor planet was named in honor of the Dutch city ofLeiden where theLeiden Observatory ofLeiden University – parent of the discovering Leiden Southern Station – is located. The asteroid was named by the discoverer and by astronomerGerrit Pels, who computed the body's orbit. The official naming citation was reviewed byIngrid van Houten-Groeneveld who was a long-time astronomer at Leiden.[2]
The Latin nameLugdunum Batavorum (or Batavorum Lugdunum) and Academia Lugduno Batava has been used by the city and by the university in official documents. The Latin name also refers toBrittenburg, an ancient Roman ruin located west of Leiden.
