1500 Jyväskylä

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 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 67.36 yr (24604 days)
Aphelion 2.6673 AU (399.02 Gm)
Perihelion 1.8172 AU (271.85 Gm)
2.2423 AU (335.44 Gm)
Eccentricity 0.18956
3.36 yr (1226.4 d)
55.874°
 17m 36.744s / day
Inclination 7.4375°
19.925°
16.872°
Earth MOID 0.823819 AU (123.2416 Gm)
Jupiter MOID 2.7704 AU (414.45 Gm)
Jupiter Tisserand parameter 3.599
Physical characteristics
Dimensions 10±4 km (calculated)[3]
8.82750 h (0.367813 d)
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. 1 2 3 4 5 "JPL Small-Body Database Browser: 1500 Jyvaskyla (1938 UH)" (2015-10-19 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
    2. 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.
    3. 1 2 3 "Absolute Magnitude (H)". NASA/JPL. Retrieved November 2015.
    4. "1500 Jyvaskyla (1938 UH)". Minor Planet Center. Retrieved November 2015.

    External links

    External links


    This article is issued from Wikipedia - version of the Wednesday, April 27, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.