5391 Emmons

Last updated

5391 Emmons
Discovery  [1]
Discovered by E. F. Helin
Discovery site Palomar Obs.
Discovery date13 September 1985
Designations
(5391) Emmons
Named after
 Richard Emmons   [1]
(American astronomer)
1985 RE2 ·1934 RH
1951 RF1 ·1975 VE3
main-belt   [1] [2]  ·(inner)
background   [3]
Orbital characteristics   [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 67.86 yr (24,787 d)
Aphelion 2.8087 AU
Perihelion 1.7108 AU
2.2598 AU
Eccentricity 0.2429
3.40 yr (1,241 d)
220.53°
0° 17m 24.36s / day
Inclination 2.5123°
336.40°
344.75°
Physical characteristics
5.578±0.083  km [4] [5]
5.93 km(calculated) [6]
3.028±0.004  h [7]
0.20(assumed) [6]
0.298±0.035 [4] [5]
C (assumed) [6]
S (SDSS-MOC)
S (Pan-STARRS) [8]
13.2 [5]
13.4 [2]
13.5 [6]
13.57±0.29 [8]

    5391 Emmons, provisional designation 1985 RE2, is a background asteroid from the inner regions of the asteroid belt, approximately 6 kilometers (4 miles) in diameter. It was discovered on 13 September 1985, by American astronomer Eleanor Helin at the Palomar Observatory. [1] The likely S-type asteroid has a rotation period of 3.0 hours. [6] It was named for American astronomer Richard Emmons. [1]

    Contents

    Orbit and classification

    Emmons is a non-family asteroid from the main belt's background population. [3] It orbits the Sun in the inner main-belt at a distance of 1.7–2.8  AU once every 3 years and 5 months (1,241 days; semi-major axis of 2.26 AU). Its orbit has an eccentricity of 0.24 and an inclination of 3° with respect to the ecliptic. [2]

    The asteroid was first observed as 1934 RH at the Union Observatory in September 1934. The body's observation arc begins 35 years prior to its official discovery observation with a precovery at Palomar in April 1950. [1]

    Physical characteristics

    Emmons has been characterized as a common, stony S-type asteroid by the Pan-STARRS ' survey and by the SDSS-based taxonomic system (latter poorly secured; LSQ). The asteroid is also a generically assumed C-type. [6] [8] [9]

    Rotation period

    In September 2002, a rotational lightcurve of Emmons was obtained from photometric observations by astronomers at the Goodsell Observatory ( 741 ). Lightcurve analysis gave a rotation period of 3.028 hours with a brightness amplitude of 0.16 magnitude ( U=2 ). [7]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Emmons measures 5.578 kilometers in diameter and its surface has an albedo of 0.298, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20, and calculates a diameter of 5.93 kilometers based on an absolute magnitude of 13.5. [6]

    Naming

    This minor planet was named after American astronomer Richard H. Emmons (1919–2005), who was a longtime professor of physics and astronomy at Kent State University and known as "Mr. Astronomy" to the thousands of children and residents who looked at the heavens through his homemade telescopes. From the 1950s to 1963, school children, Boy Scouts, church groups and community organizations visited his North Canton garage, known as "The Star Barn," which he had converted into the area's only planetarium. It seated 38. Emmons was also an early observer of artificial satellites. [1]

    The official naming citation was published by the Minor Planet Center on 23 May 2000 ( M.P.C. 40701). [10]

    Related Research Articles

    4349 Tibúrcio, provisional designation 1989 LX, is a dark asteroid from the central region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 5 June 1989, by German astronomer Werner Landgraf at ESO's La Silla Observatory in northern Chile.

    Lagrangea, provisional designation 1923 OU, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 12 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Italian mathematician and astronomer Joseph-Louis Lagrange.

    <span class="mw-page-title-main">9983 Rickfienberg</span> Asteroid

    9983 Rickfienberg is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 19 February 1995, by American astronomer Dennis di Cicco at his private Sudbury Observatory, Massachusetts, United States. It was named after American astronomer and editor Richard Fienberg.

    <span class="mw-page-title-main">9936 Al-Biruni</span> Asteroid

    9936 Al-Biruni, provisional designation 1986 PN4, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 8 August 1986, by Belgian and Bulgarian astronomers Eric Elst and Violeta Ivanova at the Rozhen Observatory, located in Bulgaria's Smolyan province near the border to Greece. It was named for Persian medieval scholar Al-Biruni.

    6247 Amanogawa, provisional designation 1990 WY3, is a background asteroid from the inner regions of the asteroid belt, approximately 7 kilometers (4 miles) in diameter. It was discovered on 21 November 1990, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at the Kitami Observatory. The X-type asteroid has a rotation period of 12.38 hours. It was named after the Amanogawa River on the island of Hokkaido, Japan.

    <span class="mw-page-title-main">3544 Borodino</span> Asteroid

    3544 Borodino (prov. designation: 1977 RD4) is a stony background asteroid from the inner regions of the asteroid belt, approximately 9 kilometers (5.6 miles) in diameter. It was discovered on 7 September 1977, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. The likely elongated S-type asteroid has a rotation period of 5.44 hours. It was named for the Russian village of Borodino where the Battle of Borodino took place.

    1707 Chantal, provisional designation 1932 RL, is a stony background asteroid from the Florian region in the inner asteroid belt, approximately 7.5 kilometers in diameter. It was discovered on 8 September 1932, by astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The S-type asteroid has a rotation period of at least 10 hours. It was named for Chantal, the niece of Belgian astronomer Georges Roland.

    1232 Cortusa, provisional designation 1931 TF2, is a background asteroid from the outer regions of the asteroid belt, approximately 40 kilometers (25 miles) in diameter. It was discovered on 10 October 1931, by astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The X-type asteroid has a rotation period of 25.2 hours. It was named after the plant Cortusa and indirectly honors astronomer Gustav Stracke.

    <span class="mw-page-title-main">1555 Dejan</span> Asteroid from the background population of the central regions of the asteroid belt

    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.

    2658 Gingerich, provisional designation 1980 CK, is a background asteroid and a suspected synchronous binary system from the outer regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 13 February 1980, by astronomers of the Harvard College Observatory at the George R. Agassiz Station near Harvard, Massachusetts, in the United States. The presumed carbonaceous C-type asteroid has a short rotation period of 2.9 hours. It was named after Harvard astronomer Owen Gingerich.

    <span class="mw-page-title-main">2156 Kate</span> Highly elongated background asteroid

    2156 Kate is a highly elongated background asteroid from the inner regions of the asteroid belt. The asteroid was discovered on 23 September 1917, by Soviet–Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. It was named for Kate Kristensen, wife of astronomer L. K. Kristensen. The bright S-type/A-type asteroid has a rotation period of 5.6 hours and measures approximately 8 kilometers in diameter.

    1376 Michelle, provisional designation 1935 UH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 29 October 1935, by French astronomer Guy Reiss at the North African Algiers Observatory in Algeria. It is named for the discoverer's daughter, Michelle Reiss.

    1455 Mitchella, provisional designation 1937 LF, is a Florian asteroid, slow rotator and suspected tumbler from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 5 June 1937, by astronomer Alfred Bohrmann at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after American astronomer Maria Mitchell.

    2043 Ortutay, provisional designation 1936 TH, is a dark asteroid from the outer regions of the asteroid belt, approximately 45 kilometers in diameter. The asteroid was discovered by Hungarian astronomer György Kulin at the Konkoly Observatory, Budapest, on 12 November 1936. It was named after Hungarian ethnographer Gyula Ortutay.

    <span class="mw-page-title-main">1854 Skvortsov</span> Asteroid

    1854 Skvortsov (prov. designation: 1968 UE1) is a stony background asteroid and relatively slow rotator from the middle region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 22 October 1968, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. It is named after astronomer Evgenii Skvortsov.

    4789 Sprattia, provisional designation 1987 UU2, is a stony background asteroid from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 20 October 1987, by Canadian astronomer David Balam at the Climenhaga Observatory (657) in Victoria, Canada. The S-type asteroid has a rotation period of 3.1 hours and was named after Canadian amateur astronomer Christopher E. Spratt.

    7529 Vagnozzi, provisional designation 1994 BC, is a stony asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 16 January 1994, by and at the Colleverde Observatory near Rome, Italy. The asteroid was named for was named for Italian amateur astronomer Antonio Vagnozzi.

    <span class="mw-page-title-main">3962 Valyaev</span>

    3962 Valyaev is a dark Themistian asteroid from the outer region of the asteroid belt. The presumed C-type asteroid has a rotation period of 16.4 hours and measures approximately 15 kilometers in diameter. It was discovered on 8 February 1967, by Russian astronomer Tamara Smirnova at Nauchnyj on the Crimean peninsula, and later named after Russian astronomer Valerij Valyaev.

    6181 Bobweber, provisional designation 1986 RW, is a stony asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 6 September 1986, by American astronomer Eleanor Helin at the U.S. Palomar Observatory in California, and named after astronomer Robert Weber.

    3982 Kastelʹ, provisional designation 1984 JP1, is a Florian asteroid and a suspected binary system from the inner regions of the asteroid belt, approximately 6.9 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 7 "5391 Emmons (1985 RE2)". Minor Planet Center. Retrieved 28 May 2018.
    2. 1 2 3 4 "JPL Small-Body Database Browser: 5391 Emmons (1985 RE2)" (2018-02-26 last obs.). Jet Propulsion Laboratory . Retrieved 28 May 2018.
    3. 1 2 "Asteroid 5391 Emmons". Small Bodies Data Ferret. Retrieved 28 May 2018.
    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. S2CID   118745497.
    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. S2CID   35447010. (catalog)
    6. 1 2 3 4 5 6 7 "LCDB Data for (5391) Emmons". Asteroid Lightcurve Database (LCDB). Retrieved 28 May 2018.
    7. 1 2 Clark, Maurice; Joyce, Brian (December 2002). "Asteroid lightcurve photometry from Goodsell Observatory (741)". The Minor Planet Bulletin. 30 (1): 4–7. Bibcode:2003MPBu...30....4C. ISSN   1052-8091.
    8. 1 2 3 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. S2CID   53493339.
    9. ↑ Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi: 10.1051/0004-6361/200913322 . Retrieved 30 October 2019. (PDS data set)
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 28 May 2018.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.