1115 Sabauda

1115 Sabauda /səˈbɔːdə/ is a carbonaceous Meliboean asteroid from the outer region of the asteroid belt, approximately 68 kilometers in diameter. Discovered in 1928 by Italian astronomer Luigi Volta, it was assigned the provisional designation 1928 XC. The asteroid was probably named after the House of Savoy, the former rulers of Italy.[2][13]

1115 Sabauda
Discovery [1]
Discovered byL. Volta
Discovery sitePino Torinese Obs.
Discovery date13 December 1928
Designations
(1115) Sabauda
Pronunciation/səˈbɔːdə/
Named after
House of Savoy
(former rulers of Italy)[2]
1928 XC · A906 YF
main-belt · (outer) [3]
Meliboea [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc88.47 yr (32,314 days)
Aphelion3.6333 AU
Perihelion2.5750 AU
3.1041 AU
Eccentricity0.1705
5.47 yr (1,998 days)
58.449°
0° 10m 48.72s / day
Inclination15.271°
71.679°
57.292°
Physical characteristics
Dimensions67.24±21.50 km[5]
68.53 km (derived)[3]
68.82±1.8 km[6]
70.76±0.90 km[7]
75.907±0.656 km[8]
75.91±0.66 km[8]
6.7165±0.0007 h[lower-alpha 1]
6.718±0.001 h[9]
6.72±0.01 h[10][11][lower-alpha 2]
6.72±0.05 h[9]
6.732±0.005 h[9]
0.04±0.06[5]
0.044±0.006[8]
0.0496 (derived)[3]
0.068±0.002[7]
0.0711±0.004[6]
C [3]
9.30[6][7] · 9.60[8] · 9.63±0.62[12] · 9.69[5] · 9.7[1][3]

    Discovery

    Sabauda was discovered on 13 December 1928, by Italian astronomer Luigi Volta at the Observatory of Turin (Pino Torinese Observatory).[13] Five nights later, it was independently discovered by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain. The asteroid was first identified as A906 YF at Heidelberg Observatory in December 1906,[2] and its observation arc begins at Heidelberg in January 1929, one month after its official discovery observation at Pino Torinese.[13]

    Orbit and classification

    Sabauda is a member of the Meliboea family, a smaller asteroid family of carbonaceous outer-belt asteroids with a few hundred members, named after 137 Meliboea.[4][14]:23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (1,998 days). Its orbit has an eccentricity of 0.17 and an inclination of 15° with respect to the ecliptic.[1]

    Physical characteristics

    Sabauda is an assumed carbonaceous C-type asteroid,[3] in line with the Meliboea family's overall spectral type.[14]:23

    Rotation period

    Several rotational lightcurves of Sabauda were obtained from photometric observations. Lightcurve analysis gave a rotation period between 6.718 and 6.732 hours with a brightness amplitude of 0.16 to 0.27 magnitude (U=2+/3-/3).[9][10][11][lower-alpha 1][lower-alpha 2]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Sabauda measures between 67.24 and 75.91 kilometers in diameter and its surface has an albedo between 0.04 and 0.0711.[5][6][7][8]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0496 and a diameter of 68.53 kilometers based on an absolute magnitude of 9.7.[3]

    Naming

    This minor planet bears the Latin name of the former rulers of Italy, the House of Savoy (Sabauda, or Sapauda). It is also possible that it was named after the new established town of Sabauda in the Pontine Marshes, central Italy.[2] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 104).[2]

    Notes
    1. Polakis (2017) publication currently not yet indexed in ADS. Rotation period 6.7165±0.0007 hours. Summary figures for (1115) Sabauda at Collaborative Asteroid Lightcurve Link (CALL)
    2. Lightcurve plot of 1115 Sabauda, Palmer Divide Observatory, Brian D. Warner (2006)
    gollark: It is a Microsoft laptop thingy.
    gollark: Proof of work isn't needed for a cryptocurrency, it's just a convenient reasonably fair way to assign coins.
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    gollark: They don't seem very practical. Though the existing banking system is kind of terrible right now in some ways.

    References
    1. "JPL Small-Body Database Browser: 1115 Sabauda (1928 XC)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 2 September 2017.
    2. Schmadel, Lutz D. (2007). "(1115) Sabauda". Dictionary of Minor Planet Names – (1115) Sabauda. Springer Berlin Heidelberg. p. 95. doi:10.1007/978-3-540-29925-7_1116. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1115) Sabauda". Asteroid Lightcurve Database (LCDB). Retrieved 2 September 2017.
    4. "Asteroid 1115 Sabauda – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    5. 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. Retrieved 2 September 2017.
    6. 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.
    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.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 2 September 2017.
    9. Behrend, Raoul. "Asteroids and comets rotation curves – (1115) Sabauda". Geneva Observatory. Retrieved 2 September 2017.
    10. Ruthroff, John C. (April 2013). "Lightcurve Analysis of Main Belt Asteroids 1115 Sabauda 1554 Yugoslavia, 1616 Filipoff, 2890 Vilyujsk, (5153) 1940 GO, and (31179) 1997 YR2". The Minor Planet Bulletin. 40 (2): 90–91. Bibcode:2013MPBu...40...90R. ISSN 1052-8091. Retrieved 2 September 2017.
    11. Warner, Brian D. (December 2006). "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006". The Minor Planet Bulletin. 33 (4): 85–88. Bibcode:2006MPBu...33...85W. ISSN 1052-8091. Retrieved 2 September 2017.
    12. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 2 September 2017.
    13. "1115 Sabauda (1928 XC)". Minor Planet Center. Retrieved 2 September 2017.
    14. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.

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