155 Scylla

Scylla (minor planet designation: 155 Scylla) is a main belt asteroid. It was discovered by Austrian astronomer Johann Palisa at the Austrian Naval Observatory on 8 November 1875, and named after the monster Scylla in Greek mythology. Two weeks after its discovery this asteroid became lost and was not recovered for 95 years. It was finally found by Paul Wild of Berne, Switzerland with the aid of an ephemeris created in 1970 by Conrad M. Bardwell at Cincinnati Observatory.[19]

155 Scylla
Discovery [1]
Discovered byJ. Palisa
Discovery siteAustrian Naval Obs.
Discovery date8 November 1875
Designations
(155) Scylla
Pronunciation/ˈsɪlə/[2]
Named after
Scylla (Greek mythology)[3]
1930 UN · 1930 XS
1934 RU · 1939 TK
1941 HL · 1950 FL
1950 FN · A907 TJ
main-belt [1][4] · (middle)
background [5]
Orbital characteristics [4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc142.38 yr (52,004 d)
Aphelion3.5207 AU
Perihelion1.9916 AU
2.7562 AU
Eccentricity0.2774
4.58 yr (1,671 d)
2.9234°
0° 12m 55.44s / day
Inclination11.388°
40.994°
45.838°
Physical characteristics
Mean diameter
32.90±12.33 km[6]
39.21±0.97 km[7]
39.605±0.198 km[8]
39.88±3.8 km[9]
41.38±11.37 km[10]
45.482±0.215 km[11]
7.955±0.005 h[12]
7.958±0.002 h[13]
7.95880±0.00005 h[14]
7.9597±0.0001 h[15]
7.960±0.001 h[16]
8.8±0.6 h[17]
0.0237±0.0022[11]
0.027±0.003[8]
0.03±0.01[10]
0.0309±0.007[9]
0.035±0.002[7]
0.05±0.03[6]
Tholen = XFC [4][18]
B–V = 0.688[4]
U–B = 0.234[4]
11.23[6]
11.39[4][18][7][10][11]

    Photometric observations of this asteroid during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico, gave an asymmetrical, bimodal light curve with a period of 7.9597 ± 0.0001 hours and a brightness variation of 0.46 ± 0.03 in magnitude.[15]

    References
    1. "155 Scylla". Minor Planet Center. Retrieved 29 May 2018.
    2. "Scylla". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
    3. Schmadel, Lutz D. (2007). "(155) Scylla". Dictionary of Minor Planet Names – (155) Scylla. Springer Berlin Heidelberg. p. 29. doi:10.1007/978-3-540-29925-7_156. ISBN 978-3-540-00238-3.
    4. "JPL Small-Body Database Browser: 155 Scylla" (2018-03-28 last obs.). Jet Propulsion Laboratory. Retrieved 29 May 2018.
    5. "Asteroid 155 Scylla". Small Bodies Data Ferret. Retrieved 29 May 2018.
    6. 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.
    7. Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    8. 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.
    9. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
    10. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117.
    11. 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. (catalog)
    12. Stephens, Robert D. (July 2014). "Asteroids Observed from CS3: 2014 January - March". The Minor Planet Bulletin. 41 (3): 171–175. Bibcode:2014MPBu...41..171S. ISSN 1052-8091.
    13. Addleman, Don; Covele, Brent; Duncan, Allison; Johnson, Jama; Kramb, Steve; Lecrone, Crystal; et al. (December 2005). "Rose-Hulman spring 2005 lightcurve results: 155 Scylla, 590 Tomyris, 1655 Comas Solá, 2058 Roka, 6379 Vrba, and (25934) 2001 DC74". The Minor Planet Bulletin. 32 (4): 76–78. Bibcode:2005MPBu...32...76A. ISSN 1052-8091.
    14. Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo, M.; et al. (February 2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". Astronomy and Astrophysics. 586: 24. arXiv:1510.07422. Bibcode:2016A&A...586A.108H. doi:10.1051/0004-6361/201527441.
    15. Pilcher, Frederick; Jardine, Don (April 2009). "Period Determinations for 31 Euphrosyne, 35 Leukothea 56 Melete, 137 Meliboea, 155 Scylla, and 264 Libussa". The Minor Planet Bulletin. 36 (2): 52–54. Bibcode:2009MPBu...36...52P. ISSN 1052-8091.
    16. Owings, Larry E. (April 2009). "Lightcurves for 155 Scylla and 2358 Bahner". The Minor Planet Bulletin. 36 (2): 51–52. Bibcode:2009MPBu...36...51O. ISSN 1052-8091.
    17. Behrend, Raoul. "Asteroids and comets rotation curves – (155) Scylla". Geneva Observatory. Retrieved 29 May 2018.
    18. "LCDB Data for (155) Scylla". Asteroid Lightcurve Database (LCDB). Retrieved 29 May 2018.
    19. Hodgson, Richard G. (September 1976), "155 Scylla, 279 Thule, 944 Hidalgo, and 1620 Geographos: Four Challenges for Observation", The Minor Planet Bulletin, 4: 7, Bibcode:1976MPBu....4....7H.

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