1604 Tombaugh

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1604 Tombaugh
001604-asteroid shape model (1604) Tombaugh.png
Shape model of Tombaugh from its lightcurve
Discovery [1]
Discovered by C. O. Lampland
Discovery site Lowell Obs.
Discovery date24 March 1931
Designations
(1604) Tombaugh
Named after
 Clyde Tombaugh
(astronomer) [2]
1931 FH ·1930 DX
1933 SA1 ·1936 FA
1937 JH ·1941 CF
1943 OE ·1948 ME
1949 ST1 ·A920 EC
main-belt  · Eos [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 96.51 yr (35,252 days)
Aphelion 3.3309 AU
Perihelion 2.7161 AU
3.0235 AU
Eccentricity 0.1017
5.26 yr (1,920 days)
359.39°
0° 11m 15s / day
Inclination 9.3941°
309.10°
38.199°
Physical characteristics
Dimensions28.78±0.53 km [4]
32.25 km (derived) [3]
32.33±2.2 km (IRAS:3) [5]
6.15 h (dated) [6]
7.04 h (dated) [7]
7.047±0.004 h [8]
7.056±0.001 h [9]
8.2 h (dated) [10]
0.0933 (derived) [3]
0.1038±0.016(IRAS:3) [5]
0.138±0.006 [4]
B–V = 0.751 [1]
U–B = 0.373 [1]
XSCU (Tholen) [1]  ·Xc (SMASS) [1]  · X [3]
10.4 [1]  ·10.53 [5] [4]  ·10.65 [3] [7]  ·10.93±0.15 [11]

    1604 Tombaugh, provisional designation 1931 FH, is a rare-type Eos asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 24 March 1931, by American astronomer Carl Otto Lampland at Lowell Observatory in Flagstaff, Arizona, in the United States. [12] It was named after the discoverer of Pluto, Clyde Tombaugh. [2]

    Contents

    Classification and orbit

    Tombaugh is a member of the Eos family that orbits the Sun in the outer main-belt at a distance of 2.7–3.3  AU once every 5 years and 3 months (1,920 days). Its orbit has an eccentricity of 0.10 and an inclination of 9° with respect to the ecliptic. [1] Its observation arc begins at Flagstaff, one year prior to its official discovery observation at Lowell Observatory. It had been previously identified at Heidelberg as A920 EC in 1920, and as 1930 DX in 1930. [12]

    Physical characteristics

    Tombaugh is classified as an X-type asteroid. It is also classified as a rare XSCU type in the Tholen, and as a transitional Xc type in the SMASS taxonomy. [1]

    Rotation period

    In April 2010 and November 2012, rotational lightcurves of Tombaugh were obtained from photometric observations at Oakley Southern Sky Observatory, Australia, and at Bassano Bresciano Observatory, Italy. Lightcurve analysis gave a rotation period of 7.047 and 7.056 hours with a brightness variation of 0.16 and 0.35 magnitude, respectively ( U=2+/2+ ). [8] [9]

    These periods supersede previous results obtained by astronomers Claes-Ingvar Lagerkvist (1975), Richard P. Binzel (1984) and Krisztián Sárneczky ( U=1/2/2 ). [6] [7] [10]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS and the Japanese Akari satellite, Tombaugh measures 28.78 and 32.33 kilometers in diameter, and its surface has an albedo of 0.138 and 0.104, respectively. [4] [5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0933 and a diameter of 32.25 kilometers with an absolute magnitude of 10.65. [3]

    Naming

    This minor planet was named for American astronomer Clyde Tombaugh (1906–1997), famous for his discovery of Pluto in 1930. The discovering Lowell Observatory named this asteroid on the occasion of a symposium on Pluto, held in 1980. When Tombaugh examined the photographic plates during the trans-Saturnian search program at the Lowell Observatory, he also marked over 4,000 minor planets on these plates. [2] The approved naming citation was published by the Minor Planet Center on 1 April 1980 ( M.P.C. 5280). [13]

    Related Research Articles

    2159 Kukkamäki, provisional designation 1941 UX, is a stony asteroid from the inner region of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 16 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. It was later named after Finnish geodesist Tauno Kukkamäki.

    <span class="mw-page-title-main">251 Sophia</span> Main-belt asteroid

    251 Sophia is a stony background asteroid from the outer regions of the asteroid belt. It was discovered on 4 October 1885, by astronomer Johann Palisa at the Vienna Observatory in Austria. The S-type asteroid (S/L) has a rotation period of 20.2 hours and measures approximately 28 kilometers in diameter. It was named after Sophia von Seeliger, wife of German astronomer Hugo von Seeliger (1849–1924).

    <span class="mw-page-title-main">462 Eriphyla</span> Main-belt asteroid

    462 Eriphyla is a Koronian asteroid from the outer regions of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 22 October 1900. The stony S-type asteroid has a rotation period of 8.7 hours and measures approximately 35 kilometers in diameter. It was named after Eriphyle, from Greek mythology.

    <span class="mw-page-title-main">512 Taurinensis</span> Mars-crossing asteroid

    Taurinensis, provisional designation 1903 LV, is a stony asteroid and large Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 23 June 1903, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Italian city of Turin. It is the 4th-largest Mars-crossing asteroid.

    716 Berkeley is a background asteroid from the central regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 30 July 1911. The stony S-type asteroid has a rotation period of 15.6 hours and measures approximately 21 kilometers in diameter. It was named after the city of Berkeley, California, where the discoverer's colleague Armin Otto Leuschner (1868–1953) was the director of the local observatory.

    <span class="mw-page-title-main">908 Buda</span>

    908 Buda is a background asteroid from the inner regions of the asteroid belt, approximately 30 kilometers in diameter. It was discovered by German astronomer Max Wolf at the Heidelberg Observatory on 30 November 1918. The uncommon L-type asteroid has a rotation period of 14.6 hours. It was named after Buda, the smaller part of the Hungarian city of Budapest.

    <span class="mw-page-title-main">1741 Giclas</span>

    1741 Giclas is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 26 January 1960, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. It is named for astronomer Henry L. Giclas.

    <span class="mw-page-title-main">1029 La Plata</span>

    1029 La Plata, provisional designation 1924 RK, is a stony Koronis asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 28 April 1924, by German astronomer Johannes Hartmann at the La Plata Astronomical Observatory in Argentina. It was named after the city of La Plata, Argentina, where the discovering observatory is located. The possibly elongated S-type asteroid has a rotation period of 15.31 hours.

    <span class="mw-page-title-main">1245 Calvinia</span>

    1245 Calvinia is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 26 May 1932, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The S-type asteroid is likely elongated and has a rotation period of 4.9 hours. It was named for the city of Calvinia in South Africa.

    1268 Libya, provisional designation 1930 HJ, is a dark Hildian asteroid from the outer regions of the asteroid belt, approximately 95 kilometers in diameter. It was discovered on 29 April 1930, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg, South Africa. The asteroid was named for the country Libya.

    2246 Bowell, provisional designation 1979 XH, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 14 December 1979, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station, and named after the discoverer himself.

    1609 Brenda, provisional designation 1951 NL, is a stony asteroid from the central region of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 10 July 1951, by South African astronomer Ernest Johnson at the Johannesburg Observatory in South Africa, and named after his granddaughter, Brenda.

    2363 Cebriones is a large Jupiter trojan from the Trojan camp, approximately 84 kilometers in diameter. It was discovered on 4 October 1977, by astronomers at the Purple Mountain Observatory in Nanking, China. The dark D-type asteroid is one of the 40 largest Jupiter trojans and has a rotation period of 20 hours. It was named after Cebriones, Hektor's charioteer from Greek mythology.

    <span class="mw-page-title-main">1841 Masaryk</span>

    1841 Masaryk (prov. designation: 1971 UO1) is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany. The asteroid was named after the first President of Czechoslovakia, Tomáš Garrigue Masaryk.

    <span class="mw-page-title-main">1753 Mieke</span>

    1753 Mieke is a stony Eos asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 10 May 1934, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. The asteroid was named after Mieke Oort, wife of Dutch astronomer Jan Oort.

    <span class="mw-page-title-main">1256 Normannia</span>

    1256 Normannia is a dark Hilda asteroid and slow rotator from the outermost regions of the asteroid belt, approximately 69 kilometers in diameter. It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was likely named after the Normans who gave their name to the region of Normandy in France.

    <span class="mw-page-title-main">1400 Tirela</span>

    1400 Tirela is an asteroid and the parent body of the Tirela family, located in the outer regions of the asteroid belt. It was discovered on 17 November 1936, by French astronomer Louis Boyer at the Algiers Observatory in North Africa. The asteroid has a rotation period of 13.4 hours and measures approximately 16 kilometers in diameter. It was named after Charles Tirel, a friend of the discoverer.

    1397 Umtata, provisional designation 1936 PG, is an asteroid from the background population of the asteroid belt's central region, approximately 21 kilometers in diameter. It was discovered by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg on 9 August 1936. The asteroid was named after the South-African town of Mthatha, formerly known as Umtata.

    2301 Whitford, provisional designation 1965 WJ, is a background asteroid from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 20 November 1965, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in the United States. The asteroid was named for American physicist and astronomer Albert Whitford. The uncommon L-type asteroid has a rotation period of 14.3 hours.

    1478 Vihuri, provisional designation 1938 CF, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 6 February 1938, by Finnish Yrjö Väisälä at Turku Observatory in Southwest Finland. The asteroid was named after a Finnish philanthropist by the name of A. Vihuri.

    References

    1. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 1604 Tombaugh (1931 FH)" (2016-09-14 last obs.). Jet Propulsion Laboratory . Retrieved 30 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1604) Tombaugh". Dictionary of Minor Planet Names – (1604) Tombaugh. Springer Berlin Heidelberg. p. 127. doi:10.1007/978-3-540-29925-7_1605. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (1604) Tombaugh". Asteroid Lightcurve Database (LCDB). Retrieved 29 December 2016.
    4. 1 2 3 4 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)
    5. 1 2 3 4 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.
    6. 1 2 Sárneczky, K.; Szabó, Gy.; Kiss, L. L. (June 1999). "CCD observations of 11 faint asteroids". Astronomy and Astrophysics Supplement. 137 (2): 363–368. Bibcode:1999A&AS..137..363S. doi: 10.1051/aas:1999251 . Retrieved 29 December 2016.
    7. 1 2 3 Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN   0019-1035 . Retrieved 29 December 2016.
    8. 1 2 Albers, Kenda; Kragh, Katherine; Monnier, Adam; Pligge, Zachary; Stolze, Kellen; West, Josh; et al. (October 2010). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2009 October thru 2010 April". The Minor Planet Bulletin. 37 (4): 152–158. Bibcode:2010MPBu...37..152A. ISSN   1052-8091 . Retrieved 29 December 2016.
    9. 1 2 Strabla, Luca; Quadri, Ulisse; Girelli, Robert (April 2013). "Asteroid Observed from Bassano Bresciano Observatory 2012 August-September". The Minor Planet Bulletin. 40 (2): 83–84. Bibcode:2013MPBu...40...83S. ISSN   1052-8091 . Retrieved 29 December 2016.
    10. 1 2 Lagerkvist, C.-I. (March 1978). "Photographic photometry of 110 main-belt asteroids". Astronomy and Astrophysics Supplement Series. 31: 361–381. Bibcode:1978A&AS...31..361L . Retrieved 29 December 2016.
    11. ↑ 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 29 December 2016.
    12. 1 2 "1604 Tombaugh (1931 FH)". Minor Planet Center. Retrieved 29 December 2016.
    13. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 December 2016.
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