7545 Smaklösa

7545 Smaklösa
Discovery [1]
Discovered by C.-I. Lagerkvist
Discovery site Mount Stromlo Obs.
Discovery date 28 July 1978
Designations
MPC designation 7545 Smaklösa
Named after
 Smaklösa
(Swedish band)[2]
1978 OB · 1995 OP
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 37.05 yr (13,531 days)
Aphelion 2.7892 AU
Perihelion 1.7348 AU
2.2620 AU
Eccentricity 0.2331
3.40 yr (1,243 days)
58.484°
0° 17m 22.92s / day
Inclination 6.5194°
114.89°
200.09°
Earth MOID 0.7220 AU
Physical characteristics
Dimensions 4.131±0.112 km[4]
4.30 km (calculated)[3]
14.3002±0.0218 h[5]
14.322±0.004[6]
14.330±0.220 h[7]
0.20 (assumed)[3]
0.2372±0.0251[4]
S [3]
14.1[4]
14.2[1][3]
14.650±0.300 (R)[7]
14.666±0.005 (R)[5]

    7545 Smaklösa, provisional designation 1978 OB, is a stony asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 28 July 1978, by Swedish astronomer Claes-Ingvar Lagerkvist at Mount Stromlo Observatory in Canberra, Australia.[8]

    The S-type asteroid orbits the Sun at a distance of 1.7–2.8 AU once every 3 years and 5 months (1,243 days). Its orbit has an eccentricity of 0.23 and an inclination of 7° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1978.[8]

    In August 2012, a rotational light-curve was obtained for this asteroid at the Oakley Southern Sky Observatory in Coonabarabran, Australia. The photometric observation showed a well-defined rotation period of 14.322±0.004 hours with a brightness variation of 0.75 in magnitude (U=3).[6] Similar periods of 14.330±0.220 and 14.3002±0.0218 hours were derived at the U.S Palomar Transient Factory in 2014 (U=2/2).[5][7]

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.1 kilometers in diameter and its surface has an albedo of 0.24,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 4.3 kilometers.[3]

    The minor planet was named after the Gotlandic music group Smaklösa. (Literally "Flavourless", but also "Tasteless" or "Tacky". The latter meaning is intended here as indicated by the name of their own record lable "Tasteless Records").[9] The Swedish band gave a number of concerts on the island of Gotland. They are known for their cleverly phrased lyrics mixed with the local humor of the island. The discoverer of this minor planet has named it after the band, grateful for having attended their concerts in 1998, which are unforgettable to him.[2] Naming citation was published on 8 December 1998 (M.P.C. 33387).[10]

    See also

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 7545 Smaklosa (1978 OB)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 17 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (7545) Smaklösa. Springer Berlin Heidelberg. p. 602. ISBN 978-3-540-00238-3. Retrieved 14 April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (7545) Smaklosa". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2016.
    4. 1 2 3 4 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 17 May 2016.
    5. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 17 May 2016.
    6. 1 2 Simpson, Gary; Chong, Elena; Gerhardt, Michael; Gorsky, Sean; Klaasse, Matthew; Kodalen, Brian; et al. (July 2013). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2012 August - October". The Minor Planet Bulletin. 40 (3): 146–151. Bibcode:2013MPBu...40..146S. ISSN 1052-8091. Retrieved 14 April 2016.
    7. 1 2 3 Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493Freely accessible. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 17 May 2016.
    8. 1 2 "7545 Smaklosa (1978 OB)". Minor Planet Center. Retrieved 14 April 2016.
    9. ↑ Larson, Johanna (16 December 2014). "Kulturpriset till Smaklösa" [Culture Prize awarded to "Smaklösa"]. www.gotland.se (in Swedish). Gotland Municipality. Retrieved 23 June 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.

    External links

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