3202 Graff

Last updated

3202 Graff
Discovery  [1]
Discovered by M. F. Wolf
Discovery site Heidelberg Obs.
Discovery date3 January 1908
Designations
(3202) Graff
Named after
 Gareth V. Williams
(astronomer) [2]
A908 AA ·1981 ES13
main-belt [1]  · Hilda   [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 109.02 yr (39,819 days)
Aphelion 4.3883 AU
Perihelion 3.4843 AU
3.9363 AU
Eccentricity 0.1148
7.81 yr (2,853 days)
295.10°
0° 7m 34.32s / day
Inclination 11.107°
205.14°
268.81°
Physical characteristics
Dimensions35.914±0.244 [4]
36.78 km (calculated) [3]
17.32±0.02 h [5]
0.055±0.013 [4]
0.057 (assumed) [3]
D   [6]  · C   [3]
10.9 [1] [3]  ·11.31±0.28 [6]

    3202 Graff, provisional designation A908 AA, is a carbonaceous Hilda asteroid from the outermost region of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 3 January 1908, by German astronomer Max Wolf at Heidelberg Observatory in southern Germany. [7] The asteroid was named after astronomer Gareth V. Williams. [2]

    Contents

    Orbit and classification

    Graff belongs to the Hilda family of asteroids, which are in a 3:2 orbital resonance with the giant planet Jupiter. It orbits the Sun in the outer main-belt at a distance of 3.5–4.4  AU once every 7 years and 10 months (2,853 days). Its orbit has an eccentricity of 0.11 and an inclination of 11° with respect to the ecliptic. [1] The asteroid's observation arc begins 3 weeks after its discovery with its first used observation at Heidelberg. [7]

    Physical characteristics

    The dark C-type asteroid is classified as a rare D-type by Pan-STARRS ' large-scale survey, [6]

    In July 2015, a rotational lightcurve of Graff was obtained by astronomer Robert Stephens at the Center for Solar System Studies. It gave a well-defined rotation period of 17.32±0.02 hours with a brightness variation of 0.18 in magnitude ( U=3- ). [5]

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Graff measures 35.9 kilometers in diameter and its surface has an albedo of 0.055. [4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 36.8 kilometers with an absolute magnitude of 10.9. [3]

    Naming

    This minor planet was named after English-born astronomer Gareth "Graff" Vaughan Williams (born 1965), who identified various low-numbered asteroids among bodies that had been given provisional designations. His work at the Minor Planet Center (MPC) has received much recognition. [2]

    The official naming citation was published by the Minor Planet Center on 10 April 1990 ( M.P.C. 16245), [8] based on a suggestion by long-time MPC director Brian G. Marsden (1937–2000) and by Conrad M. Bardwell (1926–2010), associate director of the MPC and who made the identification for this body. [2] The minor planets 1615 Bardwell and 1877 Marsden were named in honor of these two prominent astronomers at the MPC.

    Related Research Articles

    37452 Spirit, provisional designation 4282 P-L, is a dark Hildian asteroid from the outermost region of the asteroid belt, approximately 9 kilometers in diameter.

    2348 Michkovitch, provisional designation 1939 AA, is a presumed carbonaceous Erigone asteroid from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered by Serbian astronomer Milorad Protić at Belgrade Observatory on 10 January 1939. The asteroid was named after Serbian astronomer Vojislav Mišković.

    1180 Rita, provisional designation 1931 GE, is a dark and spheroidal Hildian asteroid from the outermost regions of the asteroid belt, approximately 97 kilometers in diameter. It was discovered on 9 April 1931, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. Any reference of its later name, Rita, is unknown.

    6377 Cagney, provisional designation 1987 ML1, is a carbonaceous Eunomia asteroid from the central region of the asteroid belt, approximately 9 kilometers in diameter.

    2153 Akiyama, provisional designation 1978 XD, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 17 kilometers in diameter.

    3290 Azabu, provisional designation 1973 SZ1, is a dynamical Hildian asteroid from the outermost regions of the asteroid belt, approximately 10–20 kilometers (6–10 miles) in diameter. It was discovered on 19 September 1973, by Dutch astronomers Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels the Palomar Observatory. The asteroid has a rotation period of 7.67 hours. It was named after the former city district of Tokyo, Azabu.

    3254 Bus, provisional designation 1982 UM, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 17 October 1982, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona. It is named after astronomer Schelte J. Bus.

    4446 Carolyn, provisional designation 1985 TT, is a dark Hildian asteroid from the outermost regions of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 15 October 1985, by American astronomer Edward Bowell at the Anderson Mesa Station of the Lowell Observatory near Flagstaff, Arizona, in the United States. The asteroid was named after American astronomer Carolyn Shoemaker. It has a longer than average rotation period of 40.9 hours.

    24101 Cassini, provisional designation 1999 VA9, is an eccentric background asteroid from the middle region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 9 November 1999, by American amateur astronomer Charles Juels at the Fountain Hills Observatory (678) in Arizona, United States. It was named after Italian–French astronomer Giovanni Cassini.

    3687 Dzus, provisional designation A908 TC, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 31 kilometers in diameter. It was discovered by German astronomer August Kopff at Heidelberg-Königstuhl State Observatory on 7 October 1908.

    <span class="mw-page-title-main">2483 Guinevere</span>

    2483 Guinevere is a dark and elongated Hilda asteroid from the outermost regions of the asteroid belt, approximately 43 kilometers in diameter. The asteroid was discovered on 17 August 1928, by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany and given the provisional designation 1928 QB. In the 1980s, it was named after King Arthur's wife Guinevere.

    1877 Marsden, provisional designation 1971 FC, is a carbonaceous Hildian asteroid from the outermost region of the asteroid belt, approximately 35 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey in 1971, and named after British astronomer Brian Marsden.

    1748 Mauderli, provisional designation 1966 RA, is a dark and very reddish Hildian asteroid from the outermost region of the asteroid belt, approximately 45 kilometers in diameter.

    1529 Oterma, provisional designation 1938 BC, is a reddish, rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 56 kilometers in diameter. It was discovered on 26 January 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It is named for Liisi Oterma.

    1345 Potomac, provisional designation 1908 CG, is a dark Hildian asteroid from the outermost regions of the asteroid belt, approximately 73 kilometers (45 mi) in diameter. It was discovered on 4 February 1908, by American astronomer Joel Metcalf at the Taunton Observatory in Massachusetts, United States. The X-type asteroid has a rotation period of 11.4 hours. It was named for the Potomac River on which Washington, D.C. is located.

    2959 Scholl, provisional designation 1983 RE2, is a carbonaceous Hildian asteroid from the outer regions of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 4 September 1983 by English–American astronomer Edward Bowell of the Lowell Observatory at Anderson Mesa Station near Flagstaff, Arizona. The asteroid was named after German astronomer Hans Scholl.

    1881 Shao, provisional designation 1940 PC or 1968 OO, is a background asteroid from the outer regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 3 August 1940, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The presumed C-type asteroid has a rotation period of 7.45 hours. It was named for Chinese astronomer Cheng-yuan Shao.

    2391 Tomita, provisional designation 1957 AA, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. The asteroid was discovered on 9 January 1957, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was named after Japanese astronomer Kōichirō Tomita.

    1941 Wild, provisional designation 1931 TN1, is an eccentric Hildian asteroid from the outermost region of the asteroid belt, approximately 20 kilometers in diameter.

    <span class="mw-page-title-main">1849 Kresák</span> Asteroid

    1849 Kresák is a carbonaceous Eos asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in the middle of World War II on 14 January 1942. The asteroid was later named after Slovak astronomer Ľubor Kresák.

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 3202 Graff (A908 AA)" (2017-01-09 last obs.). Jet Propulsion Laboratory. Archived from the original on 15 September 2020. Retrieved 16 June 2017.
    2. 1 2 3 4 Schmadel, Lutz D. (2007). "(3202) Graff". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 266. doi:10.1007/978-3-540-29925-7_3203. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (3202) Graff". Asteroid Lightcurve Database (LCDB). Retrieved 10 July 2016.
    4. 1 2 3 Grav, T.; Mainzer, A. K.; Bauer, J.; Masiero, J.; Spahr, T.; McMillan, R. S.; et al. (January 2012). "WISE/NEOWISE Observations of the Hilda Population: Preliminary Results". The Astrophysical Journal. 744 (2): 15. arXiv: 1110.0283 . Bibcode:2012ApJ...744..197G. doi:10.1088/0004-637X/744/2/197. S2CID   44000310 . Retrieved 5 December 2016.
    5. 1 2 Stephens, Robert D. (January 2016). "Asteroids Observed from CS3: 2015 July - September". The Minor Planet Bulletin. 43 (1): 52–56. Bibcode:2016MPBu...43...52S. ISSN   1052-8091 . Retrieved 10 July 2016.
    6. 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 . Retrieved 10 July 2016.
    7. 1 2 "3202 Graff (A908 AA)". Minor Planet Center. Retrieved 10 July 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 July 2016.
    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.