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 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 37.05 yr (13,531 days)
Aphelion 2.7890 AU
Perihelion 1.7348 AU
2.2619 AU
Eccentricity 0.2330
3.40 yr (1,243 days)
0.5330°
0° 17m 22.92s / day
Inclination 6.5195°
114.89°
200.10°
Earth MOID 0.7206 AU
Physical characteristics
Dimensions 4.131±0.112 km[4]
4.30 km (calculated)[3]
14.322±0.004 h[5]
14.330±0.220 h[6]
14.3002±0.0218 h[7]
0.2372±0.0251[4]
0.20 (assumed)[3]
S [3]
14.2[1][3]
14.1[4]
14.650±0.300 (R)[6]
14.666±0.005 (R)[7]

    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]

    In August 2012, a rotational light-curve was obtained 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 amplitude of 0.75 in magnitude (U=3).[5] 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).[6][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 (CALL) 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 music group Smaklösa ("Flavourless"). 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]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 7545 Smaklosa (1978 OB)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved April 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 April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (7545) Smaklosa". Asteroid Lightcurve Database (LCDB). Retrieved April 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved April 2016.
    5. 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 April 2016.
    6. 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:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved April 2016.
    7. 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:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 2016.
    8. ↑ "7545 Smaklosa (1978 OB)". Minor Planet Center. Retrieved April 2016.

    External links


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