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1500 Jyväskylä
Shape model of Jyväskylä from its lightcurve
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Obs.
Discovery date16 October 1938
Designations
(1500) Jyväskylä
Pronunciationjyvæs-kylæ
Named after
 Jyväskylä (Finnish city) [2]
1938 UH
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 ( JD 2458000.5)
Uncertainty parameter 0
Observation arc68.59 yr (25,051 days)
Aphelion2.6685 AU
Perihelion1.8186 AU
2.2435 AU
Eccentricity0.1894
3.36 yr (1,227 days)
172.97 °
0° 17m 35.88s / day
Inclination7.4359°
19.925°
17.100°
Physical characteristics
Dimensions6.63 km (calculated) [3]
7.39±1.59 km [4]
8.088±0.103 km [5]
8.095±0.136 km [6]
8.82750±0.00001 h [7]
0.161±0.050 [6]
0.1614±0.0254 [5]
0.24 (assumed) [3]
0.31±0.13 [4]
Tholen = S [1] · S [3]
B–V = 0.920 [1]
U–B = 0.520 [1]
12.76 [4] · 13.06 [1] [3] [5]

1500 Jyväskylä (jyvæs-kylæ), provisional designation 1938 UH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. [8] It was named for the Finnish town Jyväskylä. [2]

Classification and orbit

Jyväskylä is a member of the Flora family, a large collisional group of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7  AU once every 3 years and 4 months (1,227 days). Its orbit has an eccentricity of 0.19 and an inclination of 7 ° with respect to the ecliptic. [1] The body's observation arc begins at Turku, 3 weeks prior to its official discovery observation. [8]

Physical characteristics

In 2016, a modeled lightcurve was derived from data contained in the Lowell photometric database. Light-curve analysis gave it a rotation period of 8.8275 hours and a spin axis of (123°, −75.0°) in ecliptic coordinates ( U=n.a.). [7]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 7.39 and 8.095 kilometers in diameter, and its surface has an albedo between 0.161 and 0.31. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this family – and calculates a diameter of 6.63 kilometers, using an absolute magnitude of 13.06. [3]

Naming

This 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. The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3928). [9]

References

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 1500 Jyvaskyla (1938 UH)" (2017-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 30 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1500) Jyväskylä". Dictionary of Minor Planet Names – (1500) Jyväskylä. Springer Berlin Heidelberg. p. 119. doi: 10.1007/978-3-540-29925-7_1501. ISBN  978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (1500) Jyväskylä". Asteroid Lightcurve Database (LCDB). Retrieved 4 January 2017.
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923. Bibcode: 2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63.
  5. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407. Bibcode: 2011ApJ...741...90M. doi: 10.1088/0004-637X/741/2/90. S2CID  35447010.
  6. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645. Bibcode: 2014ApJ...791..121M. doi: 10.1088/0004-637X/791/2/121. S2CID  119293330. Retrieved 4 January 2017.
  7. ^ a b Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv: 1601.02909. Bibcode: 2016A&A...587A..48D. doi: 10.1051/0004-6361/201527573. S2CID  118427201. Retrieved 4 January 2017.
  8. ^ a b "1500 Jyvaskyla (1938 UH)". Minor Planet Center. Retrieved 4 January 2017.
  9. ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. Bibcode: 2009dmpn.book.....S. doi: 10.1007/978-3-642-01965-4. ISBN  978-3-642-01964-7.

External links

Retrieved from " https://en.wikipedia.org/?title=1500_Jyväskylä&oldid=1195682223"
From Wikipedia, the free encyclopedia

1500 Jyväskylä
Shape model of Jyväskylä from its lightcurve
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Obs.
Discovery date16 October 1938
Designations
(1500) Jyväskylä
Pronunciationjyvæs-kylæ
Named after
 Jyväskylä (Finnish city) [2]
1938 UH
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 ( JD 2458000.5)
Uncertainty parameter 0
Observation arc68.59 yr (25,051 days)
Aphelion2.6685 AU
Perihelion1.8186 AU
2.2435 AU
Eccentricity0.1894
3.36 yr (1,227 days)
172.97 °
0° 17m 35.88s / day
Inclination7.4359°
19.925°
17.100°
Physical characteristics
Dimensions6.63 km (calculated) [3]
7.39±1.59 km [4]
8.088±0.103 km [5]
8.095±0.136 km [6]
8.82750±0.00001 h [7]
0.161±0.050 [6]
0.1614±0.0254 [5]
0.24 (assumed) [3]
0.31±0.13 [4]
Tholen = S [1] · S [3]
B–V = 0.920 [1]
U–B = 0.520 [1]
12.76 [4] · 13.06 [1] [3] [5]

1500 Jyväskylä (jyvæs-kylæ), provisional designation 1938 UH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. [8] It was named for the Finnish town Jyväskylä. [2]

Classification and orbit

Jyväskylä is a member of the Flora family, a large collisional group of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7  AU once every 3 years and 4 months (1,227 days). Its orbit has an eccentricity of 0.19 and an inclination of 7 ° with respect to the ecliptic. [1] The body's observation arc begins at Turku, 3 weeks prior to its official discovery observation. [8]

Physical characteristics

In 2016, a modeled lightcurve was derived from data contained in the Lowell photometric database. Light-curve analysis gave it a rotation period of 8.8275 hours and a spin axis of (123°, −75.0°) in ecliptic coordinates ( U=n.a.). [7]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 7.39 and 8.095 kilometers in diameter, and its surface has an albedo between 0.161 and 0.31. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this family – and calculates a diameter of 6.63 kilometers, using an absolute magnitude of 13.06. [3]

Naming

This 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. The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3928). [9]

References

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 1500 Jyvaskyla (1938 UH)" (2017-05-02 last obs.). Jet Propulsion Laboratory. Retrieved 30 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1500) Jyväskylä". Dictionary of Minor Planet Names – (1500) Jyväskylä. Springer Berlin Heidelberg. p. 119. doi: 10.1007/978-3-540-29925-7_1501. ISBN  978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (1500) Jyväskylä". Asteroid Lightcurve Database (LCDB). Retrieved 4 January 2017.
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923. Bibcode: 2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63.
  5. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407. Bibcode: 2011ApJ...741...90M. doi: 10.1088/0004-637X/741/2/90. S2CID  35447010.
  6. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645. Bibcode: 2014ApJ...791..121M. doi: 10.1088/0004-637X/791/2/121. S2CID  119293330. Retrieved 4 January 2017.
  7. ^ a b Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv: 1601.02909. Bibcode: 2016A&A...587A..48D. doi: 10.1051/0004-6361/201527573. S2CID  118427201. Retrieved 4 January 2017.
  8. ^ a b "1500 Jyvaskyla (1938 UH)". Minor Planet Center. Retrieved 4 January 2017.
  9. ^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. Bibcode: 2009dmpn.book.....S. doi: 10.1007/978-3-642-01965-4. ISBN  978-3-642-01964-7.

External links

Retrieved from " https://en.wikipedia.org/?title=1500_Jyväskylä&oldid=1195682223"

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