1500 Jyväskylä
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 16 October 1938 |
| Designations | |
| MPC designation | 1500 Jyvaskyla |
Named after | Jyväskylä (city)[2] |
| 1938 UH | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 67.05 yr (24,490 days) |
| Aphelion | 2.6681 AU |
| Perihelion | 1.8171 AU |
| 2.2426 AU | |
| Eccentricity | 0.1897 |
| 3.36 yr (1,227 days) | |
| 298.47° | |
| Inclination | 7.4371° |
| 19.925° | |
| 16.871° | |
| Physical characteristics | |
| Dimensions | 10±4 km (calculated)[3] |
|
B–V = 0.920 U–B = 0.520 Tholen = S [1] | |
| 13.06[1] | |
|
| |
1500 Jyväskylä, provisional designation 1938 UH, is a stony asteroid from the inner regions of the asteroid belt, roughly about 10 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at the Turku Observatory in southwestern Finland, on 16 October 1938.[4]
The S-type asteroid orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,227 days). Its orbit shows an eccentricity of 0.19 and is tilted by 7 degrees to the plane of the ecliptic.
Little is known about the asteroids size, composition, albedo and rotation, despite having a well-observed orbit with the lowest possible uncertainty – which is denoted by a condition code of 0 – and an observation arc that spans over a time period of almost 70 years.[1] With an absolute magnitude of 13.06, the asteroid's diameter could be anywhere between 6 and 14 kilometers for an assumed albedo in the range of 0.05–0.25 (see NASA's conversion table).[3] Since the asteroid's spectral type is that of a brighter stony rather than a darker carbonaceous body, its diameter is on the lower end of NASA's generic conversion table, as an object's diameter decreases, when its albedo increases for a given absolute magnitude.[3]
The minor planet was named for the Finnish town Jyväskylä.[2] It is the largest city in the region of Central Finland and on the Finnish Lakeland.
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 1500 Jyvaskyla (1938 UH)" (2015-10-19 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1500) Jyväskylä. Springer Berlin Heidelberg. p. 119. ISBN 978-3-540-29925-7. Retrieved November 2015.
- 1 2 3 "Absolute Magnitude (H)". NASA/JPL. Retrieved November 2015.
- ↑ "1500 Jyvaskyla (1938 UH)". Minor Planet Center. Retrieved November 2015.
External links
- MPC - conversion abs. magnitude to diameter
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1500 Jyväskylä at the JPL Small-Body Database
External links
- JPL Near Earth Object Program Orbit Simulation (Java applet)
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