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460 Scania
Discovery  [1]
Discovered by M. F. Wolf
Discovery site Heidelberg Obs.
Discovery date22 October 1900
Designations
(460) Scania
Pronunciation /ˈskeɪiə/
Named after
 Scania (Skåne)
(Province of Sweden) [2]
A900 UF · 1900 FN
Orbital characteristics  [3]
Epoch 31 May 2020 ( JD 2459000.5)
Uncertainty parameter 0
Observation arc119.27 yr (43,564 d)
Aphelion3.0059 AU
Perihelion2.4304 AU
2.7182 AU
Eccentricity0.1059
4.48 yr (1,637 d)
266.57 °
0° 13m 11.64s / day
Inclination4.6346°
205.20°
161.66°
Physical characteristics
Mean diameter
  • 19.689±0.146  km [6]
  • 21.78±1.9 km [7]
  • 23.58±0.51 km [8]
164.1±0.1  h [9]
  • 0.189±0.009 [8]
  • 0.2144±0.042 [7]
  • 0.262±0.057 [6]
SMASS = K  [3]
10.8 [1] [3]

460 Scania ( /ˈskeɪiə/; prov. designation: A900 UF or 1900 FN) is a background asteroid and a slow rotator from the central regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 22 October 1900. [1] The uncommon K-type asteroid has an exceptionally long rotation period of 164.1 hours and measures approximately 21 kilometers (13 miles) in diameter. It was named after the Swedish region of Scania, where a meeting was held by the Astronomische Gesellschaft in 1904. [2]

Orbit and classification

Scania is a non- family asteroid from the main belt's background population. [5] It orbits the Sun in the central asteroid belt at a distance of 2.4–3.0  AU once every 4 years and 6 months (1,637 days; semi-major axis of 2.72 AU). Its orbit has an eccentricity of 0.11 and an inclination of 5 ° with respect to the ecliptic. [3] The body's observation arc begins at Vienna Observatory on 25 October 1900, three nights after its official discovery observation at Heidelberg. [1]

Naming

This minor planet was named after the Swedish region of Scania or Skåne by its Latin name, on the occasion of a meeting held in Lund by the Astronomische Gesellschaft in 1904 ( AN, 166, 207). The naming was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 50). [2]

Physical characteristics

In the Bus–Binzel SMASS classification, Scania is an uncommon K-type asteroid. [3]

Rotation period

In December 2017, a rotational lightcurve of Scania was obtained from photometric observations by Frederick Pilcher. Lightcurve analysis gave a well defined rotation period of 164.1±0.1 hours with a brightness variation of 0.37±0.03 magnitude ( U=3). The results supersedes previous observations. [10] [11]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Scania measures between 19.689 and 23.58 kilometers in diameter and its surface has an albedo between 0.189 and 0.262. [6] [7] [8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1808 and a diameter of 21.63 kilometers based on an absolute magnitude of 10.8. [10]

References

  1. ^ a b c d e "460 Scania (A900 UF)". Minor Planet Center. Retrieved 11 March 2020.
  2. ^ a b c Schmadel, Lutz D. (2007). "(460) Scania". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p.  52. doi: 10.1007/978-3-540-29925-7_461. ISBN  978-3-540-00238-3.
  3. ^ a b c d e f "JPL Small-Body Database Browser: 460 Scania (A900 UF)" (2020-01-31 last obs.). Jet Propulsion Laboratory. Retrieved 11 March 2020.
  4. ^ "Asteroid 460 Scania – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 11 March 2020.
  5. ^ a b "Asteroid 460 Scania". Small Bodies Data Ferret. Retrieved 11 March 2020.
  6. ^ a b c Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System. Bibcode: 2016PDSS..247.....M. Retrieved 11 March 2020.
  7. ^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode: 2004PDSS...12.....T. Retrieved 11 March 2020.
  8. ^ a b c Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode: 2011PASJ...63.1117U. doi: 10.1093/pasj/63.5.1117. ( online, AcuA catalog p. 153)
  9. ^ Pilcher, Frederick; Benishek, Vladimir (July 2018). "Rotation Determination for 460 Scania" (PDF). Minor Planet Bulletin. 45 (3): 242. Bibcode: 2018MPBu...45..242P. ISSN  1052-8091. Archived from the original (PDF) on 13 April 2019. Retrieved 11 March 2020.
  10. ^ a b "LCDB Data for (460) Scania". Asteroid Lightcurve Database (LCDB). Retrieved 11 March 2020.
  11. ^ Behrend, Raoul. "Asteroids and comets rotation curves – (460) Scania". Geneva Observatory. Retrieved 11 March 2020.

External links

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