In this article, we will explore the topic of 1938 Lausanna in depth. Throughout history, 1938 Lausanna has played a crucial role in various areas of society, from culture and art to science and technology. Through a detailed analysis, we will analyze the importance of 1938 Lausanna in the contemporary context, as well as its influence on the development and evolution of different aspects of daily life. Additionally, we will examine how 1938 Lausanna has been subject to multiple interpretations and approaches over time, which has contributed to its continued relevance today. From its origins to its presence today, 1938 Lausanna has left an indelible mark on the world, and this article seeks to examine and understand its impact in depth.
Discovery[1] | |
---|---|
Discovered by | P. Wild |
Discovery site | Zimmerwald Obs. |
Discovery date | 19 April 1974 |
Designations | |
(1938) Lausanna | |
Named after | Lausanne (Swiss city)[2] |
1974 HC · 1934 KA 1947 DB · 1950 CO 1955 VK · 1957 EH 1962 WB1 · 1967 ED1 1971 OX · 1972 XY1 | |
main-belt · Flora[3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 82.99 yr (30,312 days) |
Aphelion | 2.5938 AU |
Perihelion | 1.8796 AU |
2.2367 AU | |
Eccentricity | 0.1597 |
3.35 yr (1,222 days) | |
329.17° | |
0° 17m 40.56s / day | |
Inclination | 3.3343° |
171.69° | |
64.830° | |
Physical characteristics | |
Dimensions | 7.638±0.124 km[4] 7.82 km (calculated)[3] 8.214±0.077 km[5] |
2.748±0.001 h[a] 2.748±0.001 h[6] | |
0.1660±0.0301[5] 0.192±0.055[4] 0.24 (assumed)[3] | |
S[3][7] | |
12.60±0.26[7] · 12.7[1][3] · 13.0[5] | |
1938 Lausanna, provisional designation 1974 HC, is a stony Florian asteroid from the inner regions of the asteroid belt. It is approximately 8 kilometers in diameter, and was discovered on 19 April 1974 by Swiss astronomer, Paul Wild at Zimmerwald Observatory near Bern, Switzerland.[8] It is named for the city of Lausanne.[2]
Lausanna is a S-type asteroid and member of the Flora family, one of the largest collisional populations of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,222 days). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic.[1] It was first identified as 1934 KA at Johannesburg Observatory in 1934, extending the body's observation arc by 40 years prior to its official discovery observation at Zimmerwald.[8]
In March 2014, two rotational lightcurves of Lausanna were obtained from photometric observations by American astronomer Brian Skiff and by Johan Warell at Lindby Observatory (K60) in Sweden. Lightcurve analysis gave an identical rotation period of 2.748 hours with a brightness amplitude of 0.13 and 0.12 magnitude, respectively (U=3-/2).[a][6] The short period is near the threshold of 2.2 hours for fast rotating asteroids.
According to the space-based survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lausanna measures 7.64 and 8.21 kilometers in diameter, and its surface has an albedo of 0.166 and 0.192, respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its family – and calculates a diameter of 7.82 kilometers based on an absolute magnitude of 12.7.[3]
This minor planet was named for the Swiss city of Lausanne, located in the French-speaking part of the country. The discoverer Paul Wild, known for his unconventional minor-planet namings, discovered three more asteroids during winter of 1973/74. He named these 1935 Lucerna, 1936 Lugano and 1937 Locarno, after the Swiss cities Lucerne, Lugano and Locarno, respectively, hence composing an alliterated quartet of sequentially numbered, thematically named minor planets. The official naming citation was published by the Minor Planet Center on 1 April 1978 (M.P.C. 4358).[9]