1751 Herget

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1751 Herget
Discovery [1]
Discovered by Indiana University
(Indiana Asteroid Program)
Discovery site Goethe Link Obs.
Discovery date27 July 1955
Designations
(1751) Herget
Named after
 Paul Herget [2]
(American astronomer)
1955 OC ·1955 QO
1955 RB ·1955 SP1
1962 CC ·1969 QA
main-belt  ·(middle)
Gefion [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 61.67 yr (22,526 days)
Aphelion 3.2765 AU
Perihelion 2.3002 AU
2.7883 AU
Eccentricity 0.1751
4.66 yr (1,701 days)
78.845°
Inclination 8.1315°
240.27°
130.93°
Physical characteristics
Dimensions10.929±0.248 km [4] [5]
23.21 km (calculated) [6]
3.937±0.001 h [7]
3.9397±0.0006 h [8]
0.195±0.027 [4] [5]
0.057 (assumed) [6]
SMASS = S [1]  · C [6]
11.80±0.05 [7]  ·11.9 [1] [6]  ·12.06±0.41 [9]  ·12.2 [5]

    1751 Herget, provisional designation 1955 OC, is a stony Gefionian asteroid from the central region of the asteroid belt, approximately 11 kilometers in diameter.

    Contents

    It was discovered on 27 July 1955, by IU 's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. [10] The asteroid was named after American astronomer Paul Herget. [2]

    Classification and orbit

    Herget is a member of the large Gefion family of asteroids ( 516 ). [3] It orbits the Sun in the central main-belt at a distance of 2.3–3.3  AU once every 4 years and 8 months (1,701 days; semi-major axis of 2.79 AU). Its orbit has an eccentricity of 0.18 and an inclination of 8° with respect to the ecliptic. [1] As no precoveries were taken, and no prior identifications were made, the body's observation arc begins with its official discovery observation at Goethe Link in 1955. [10]

    Physical characteristics

    In the SMASS classification, Herget has been characterized as a common S-type asteroid, [1] which agrees with the overall spectral type of the Gefion family. [11] : 23 

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Herget measures 10.93 kilometers in diameter, and its surface has an albedo of 0.195, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 23.21 kilometers with an absolute magnitude of 11.9, as the lower the body's albedo (reflectivity), the larger its diameter. [6]

    Rotation period

    In November 2016, two rotational lightcurves of Herget were obtained from photometric observations by Italian astronomers Lorenzo Franco and Alessandro Marchini, as well as by French amateur astronomer René Roy. Lightcurve analysis gave a rotation period of 3.937 and 3.9397 hours with a brightness amplitude of 0.30 and 0.31 magnitude, respectively ( U=3-/3 ). [7] [8]

    Naming

    This minor planet was named in honor of American astronomer Paul Herget (1908–1981), who was director of the Cincinnati Observatory and distinguished service professor in the University of Cincinnati. [2]

    Herget was also founder of the Minor Planet Center (MPC) in 1947, pioneer in the application of high speed computers to astronomical problems, member of the U.S. National Academy of Sciences, and past president of IAU's Commission 20 (Positions & Motions of Minor Planets, Comets & Satellites). [2] The official naming citation was published by the MPC on 20 February 1971 ( M.P.C. 3143). [12]

    Related Research Articles

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    <span class="mw-page-title-main">1555 Dejan</span>

    1555 Dejan, provisional designation 1941 SA, is an asteroid from the background population of the central regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 September 1941, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle. The asteroid was named after Dejan Đurković, son of Serbian astronomer Petar Đurković.

    <span class="mw-page-title-main">1335 Demoulina</span>

    1335 Demoulina, provisional designation 1934 RE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Karl Reinmuth at Heidelberg Observatory in 1934, the asteroid was named after Prof. Demoulin, a Belgian astronomer at Ghent University. It has a slower-than average spin rate of nearly 75 hours.

    3841 Dicicco, provisional designation 1983 VG7, is a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 4 November 1983, by American astronomer Brian Skiff at Lowell's Anderson Mesa Station near Flagstaff, Arizona, in the United States. It was named after American astronomer Dennis di Cicco. Its minor-planet moon, provisionally designated S/2014 (3841) 1, was discovered in 2014.

    1272 Gefion, provisional designation 1931 TZ1, is a stony asteroid and parent body of the Gefion family from the central region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 10 October 1931, by astronomer Karl Reinmuth at the Heidelberg Observatory in Germany. The asteroid was named after Gefjon from Norse mythology.

    1433 Geramtina, provisional designation 1937 UC, is a stony Gefion asteroid from the central regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle on 30 October 1937.

    1710 Gothard, provisional designation 1941 UF, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 20 October 1941, by Hungarian astronomer György Kulin at the Konkoly Observatory in Budapest, Hungary. It was later named after Hungarian amateur astronomer Jenő Gothard.

    3099 Hergenrother, provisional designation 1940 GF, is an asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 3 April 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, and named after American astronomer Carl Hergenrother in 1996.

    <span class="mw-page-title-main">1486 Marilyn</span>

    1486 Marilyn, provisional designation 1938 QA, is a stony background asteroid from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 23 August 1938, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The asteroid was named after Marilyn Herget, daughter of astronomer Paul Herget.

    7776 Takeishi, provisional designation 1993 BF, is a background asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 20 January 1993, by Japanese astronomer Takeshi Urata at the Nihondaira Observatory in Japan. The assumed S-type asteroid has a rotation period of 8.9 hours. It was named after Japanese amateur astronomer Masanori Takeishi.

    2022 West, provisional designation 1938 CK, is a stony asteroid from the middle regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 7 February 1938. The asteroid was named after Danish astronomer Richard M. West.

    4760 Jia-xiang, provisional designation 1981 GN1, is a background asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 1 April 1981, by astronomers at Harvard University's Oak Ridge Observatory in Massachusetts, United States. The presumed stony S-type asteroid was named after Chinese astronomer Zhang Jiaxiang. It has a rotation period of 14.96 hours.

    14436 Morishita, provisional designation 1992 FC2, is a stony background asteroid and exceptionally slow rotator from the middle region of the asteroid belt, approximately 5 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 1751 Herget (1955 OC)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 8 June 2017.
    2. 1 2 3 4 Schmadel, Lutz D. (2007). "(1751) Herget". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 139. doi:10.1007/978-3-540-29925-7_1752. ISBN   978-3-540-00238-3.
    3. 1 2 "Asteroid 1751 Herget – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    4. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv: 1109.4096 . Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68 . Retrieved 20 December 2016.
    5. 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.
    6. 1 2 3 4 5 "LCDB Data for (1751) Herget". Asteroid Lightcurve Database (LCDB). Retrieved 8 June 2017.
    7. 1 2 3 Franco, Lorenzo; Marchini, Alessandro (April 2017). "Rotation Periods for 1751 Herget, 2022 West and (23997) 1999 RW27". The Minor Planet Bulletin. 44 (2): 93–94. Bibcode:2017MPBu...44...93F. ISSN   1052-8091 . Retrieved 8 June 2017.
    8. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1751) Herget". Geneva Observatory . Retrieved 27 December 2016.
    9. ↑ 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 8 June 2017.
    10. 1 2 "1751 Herget (1955 OC)". Minor Planet Center. Retrieved 20 December 2016.
    11. ↑ 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   978-0-8165-3213-1.
    12. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) . Springer Berlin Heidelberg. p.  221. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
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