767 Bondia

767 Bondia (prov. designation: A913 SD or 1913 SX) is a Themis asteroid from the outer regions of the asteroid belt, approximately 43 kilometers (27 miles) in diameter. It was discovered on 23 September 1913, by American astronomer Joel Hastings Metcalf at his observatory (799) in Winchester, Massachusetts.[1] The B-type asteroid has a rotation period of 8.3 hours. It was named after William Cranch Bond (1789–1859) and his son George Phillips Bond (1825–1865), both American astronomers and directors of the Harvard College Observatory in Cambridge, Massachusetts.[2]

767 Bondia
Modelled shape of Bondia from its lightcurve
Discovery [1]
Discovered byJ. H. Metcalf
Discovery siteWinchester Obs.
Discovery date23 September 1913
Designations
(767) Bondia
Named after
William Cranch Bond (1789–1859)
George Phillips Bond (1825–1865)
(American astronomers)[2]
A913 SD · 1929 OA
1933 FO1 · 1938 DQ2
1957 UR · 1958 XA1
1959 AD · A902 SA
1913 SX
main-belt [1][3] · (outer)
Themis [4][5][6]
Orbital characteristics [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc117.59 yr (42,949 d)
Aphelion3.6909 AU
Perihelion2.5531 AU
3.1220 AU
Eccentricity0.1822
5.52 yr (2,015 d)
137.11°
0° 10m 43.32s / day
Inclination2.4118°
79.324°
269.09°
Physical characteristics
Mean diameter
8.3402±0.0007 h[10]
SMASS = B [3][11]

    Orbit and classification

    Bondia is a core member the Themis family (602), a very large family of carbonaceous asteroids, named after 24 Themis.[4][5][6][12]:24 It orbits the Sun in the outer main-belt at a distance of 2.6–3.7 AU once every 5 years and 6 months (2,015 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.18 and an inclination of 2° with respect to the ecliptic.[3]

    The Themistian asteroid was first observed as A902 SA (1902 SA) at Heidelberg Observatory on 26 September 1902. The body's observation arc begins at Bergedorf Observatory in September 1915, or two years after its official discovery observation by Metcalf at Winchester Observatory.[1]

    Naming

    This minor planet was named after American astronomers William Cranch Bond (1789–1859) and his son George Phillips Bond (1825–1865), both directors of the Harvard College Observatory in Cambridge, Massachusetts. Former co-discovered Comet 1850 II and pioneered the use of photographic plates in astronomy. The latter is best known for his 1848 co-discovery of Hyperion, a moon of Saturn. He also discovered Saturn's faint C Ring, also known as Crepe Ring. The naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 77).[2] The lunar craters W. Bond and G. Bond were named in honor of the two American astronomers.[13][14] In addition, Martian crater Bond was named after George Phillips.[15]

    Physical characteristics

    In the Bus–Binzel SMASS classification, Bondia is a B-type asteroid, a brighter variant of the common carbonaceous C-type asteroid.[3]

    Rotation period

    In October 2018, a rotational lightcurve of Bondia was obtained from photometric observations by Mexican astronomers at the National Astronomical Observatory in San Pedro Mártir (OAN-SPM). Lightcurve analysis gave a well defined rotation period of 8.3402±0.0007 hours with a brightness variation of 0.27±0.02 magnitude (U=3) and supersedes a previous observation by Szabó from 2016, who determined a period of at least 60 hours and a low amplitude (U=2).[10][11]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), Bondia measures 43.039±0.396 and 46.91±0.66 kilometers in diameter and its surface has an albedo between 0.095±0.022 and 0.084, respectively.[7][8][9] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0857 and a diameter of 41.40 kilometers based on an absolute magnitude of 10.2.[11] Alternative mean-diameter measurements published by the WISE team include (43.100±0.730 km), (45.3±4.5 km), (46.87±15.23 km) and (47±5 km) with corresponding albedos of (0.0956±0.0179), (0.9±0.02), (0.06±0.02) and (0.07±0.01).[11][16]

    References
    1. "767 Bondia (A913 SD)". Minor Planet Center. Retrieved 28 May 2020.
    2. Schmadel, Lutz D. (2007). "(767) Bondia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 73. doi:10.1007/978-3-540-29925-7_768. ISBN 978-3-540-00238-3.
    3. "JPL Small-Body Database Browser: 767 Bondia (A913 SD)" (2020-04-28 last obs.). Jet Propulsion Laboratory. Retrieved 28 May 2020.
    4. "Asteroid 767 Bondia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 May 2020.
    5. "Asteroid 767 Bondia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 28 May 2020.
    6. Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families". NASA Planetary Data System: EAR-A-5-DDR-FAMILY-V4.1. Retrieved 28 May 2020. (PDS main page)
    7. Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System. Bibcode:2016PDSS..247.....M. Retrieved 28 May 2020.
    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. 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. (online, AcuA catalog p. 153)
    10. Contreras, M. E.; Olguín, L.; Loera-González, P.; Saucedo, J. C.; Schuster, W. J.; Valdés-Sada, P.; et al. (October 2019). "Six Asteroids from the 2018 Mexican Asteroid Photometry Campaign" (PDF). Minor Planet Bulletin. 46 (4): 381–383. Bibcode:2019MPBu...46..381C. ISSN 1052-8091.
    11. "LCDB Data for (767) Bondia". Asteroid Lightcurve Database (LCDB). Retrieved 28 May 2020.
    12. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV: 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016.
    13. "Lunar crater G. Bond". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
    14. "Lunar crater W. Bond". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
    15. "Martian crater Bond". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
    16. "Asteroid 767 Bondia". Small Bodies Data Ferret. Retrieved 28 May 2020.
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