1623 Vivian

Last updated

1623 Vivian
001623-asteroid shape model (1623) Vivian.png
Shape model of Vivian from its lightcurve
Discovery [1]
Discovered by Ernest Johnson
Discovery site Johannesburg Obs.
Discovery date9 August 1948
Designations
(1623) Vivian
Named after
Vivian Hirst
(daughter of an astronomer) [2]
1948 PL ·1951 EG2
1954 SA ·1955 YC
1960 WP ·1965 QB
1965 UW ·1973 GG
main-belt  · Themis [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 68.64 yr (25,070 days)
Aphelion 3.6317 AU
Perihelion 2.6542 AU
3.1429 AU
Eccentricity 0.1555
5.57 yr (2,035 days)
72.044°
0° 10m 36.84s / day
Inclination 2.4903°
115.62°
316.97°
Physical characteristics
Dimensions24.77±6.52 km [4]
25.82 km (calculated) [3]
27.851±0.351 km [5]
29.98±1.74 km [6]
20.5209±0.0007 h [7]
20.5235 h [8] [9]
0.075±0.012 [5]
0.078±0.010 [6]
0.08 (assumed) [3]
0.08±0.07 [4]
C [3]
11.00 [6]  ·11.20 [5]  ·11.24 [4]  ·11.26±0.22 [10]  ·11.3 [1] [3]

    1623 Vivian (provisional designation 1948 PL) is a carbonaceous Themis asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 9 August 1948, by South African astronomer Ernest Johnson at Johannesburg Observatory in South Africa. [11] It was named after Vivian Hirst, daughter of British astronomer William P. Hirst. [2]

    Contents

    Orbit and classification

    Vivian is a C-type asteroid and member of the Themis family, a large family of asteroids with nearly coplanar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.7–3.6  AU once every 5 years and 7 months (2,035 days). Its orbit has an eccentricity of 0.16 and an inclination of 2° with respect to the ecliptic. [1] Vivian's observation arc begins with its official discovery observation, as no precoveries were taken, and no prior identifications were made. [11]

    Rotation period and pole

    In March 2006, a rotational lightcurve of Vivian was obtained by American astronomer Lawrence Molnar at the Calvin–Rehoboth Observatory in New Mexico. It gave it a rotation period of 20.5209 hours with a brightness variation of 0.85 magnitude ( U=3- ). [7] Modeled lightcurve data gave a concurring period of 20.5235 hours ( U=n.a. ). [8] [9]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Vivian measures between 24.77 and 29.98 kilometers in diameter, and its surface has an albedo between 0.075 and 0.08. [4] [5] [6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 25.82 kilometers with an absolute magnitude of 11.3. [3]

    Naming

    This minor planet was named in honor of Vivian Hirst, daughter of British astronomer William P. Hirst, receiver of the Astronomical Society of Southern Africa's Gill Medal and after whom the minor planet 3172 Hirst is named. Hirst calculated the preliminary orbit for this and several other minor planets discovered by Ernest Johnson. [2] The official naming citation was published by the Minor Planet Center on 1 January 1974 ( M.P.C. 3569). [12]

    Related Research Articles

    <span class="mw-page-title-main">1743 Schmidt</span> Asteroid

    1743 Schmidt, provisional designation 4109 P-L, is a dark background asteroid from the inner regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered during the Palomar–Leiden survey on 24 September 1960, by astronomers Ingrid and Cornelis van Houten at Leiden, on photographic plates taken by Tom Gehrels at Palomar Observatory in California. The C-type asteroid has a rotation period of 17.5 hours. It was named for the optician Bernhard Schmidt.

    La Paz, provisional designation 1923 PD, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 31 October 1923, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory and named after the city La Paz in Bolivia.

    1178 Irmela, provisional designation 1931 EC, is a stony asteroid from the middle regions of the asteroid belt, approximately 19 kilometers in diameter.

    <span class="mw-page-title-main">1127 Mimi</span>

    1127 Mimi is a dark background asteroid from the central regions of the asteroid belt. It was discovered on 13 January 1929, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle. The carbonaceous C-type asteroids (CX) has a rotation period of 12.7 hours and measures approximately 47 kilometers in diameter. Through a glitch in the naming process, the asteroid received the name "Mimi" instead of "Robelmonte" as originally intended by the discoverer.

    1622 Chacornac is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 15 March 1952, by French astronomer Alfred Schmitt at the Royal Observatory of Belgium in Uccle, and named after astronomer Jean Chacornac.

    1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew.

    <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.

    4282 Endate, provisional designation 1987 UQ1, is an asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 October 1987, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at Kushiro Observatory (399) in Japan. It was named for amateur astronomer Kin Endate.

    1267 Geertruida, provisional designation 1930 HD, is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. Discovered by astronomer Hendrik van Gent at Johannesburg Observatory in 1930, the asteroid was later named after Geertruid Pels, sister of Dutch astronomer Gerrit Pels.

    2126 Gerasimovich, provisional designation 1970 QZ, is a stony background asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 30 August 1970, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named after Russian astronomer Boris Gerasimovich.

    <span class="mw-page-title-main">1188 Gothlandia</span>

    1188 Gothlandia, provisional designation 1930 SB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. Discovered by astronomer Josep Comas i Solà at the Fabra Observatory in 1930, the asteroid was later named after the ancient name of the Spanish autonomous community of Catalonia.

    1303 Luthera, provisional designation 1928 FP, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther.

    <span class="mw-page-title-main">1607 Mavis</span>

    1607 Mavis, provisional designation 1950 RA, is a stony asteroid from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 3 September 1950, by South African astronomer Ernest Johnson at Johannesburg Observatory in South Africa. It was later named after the wife of astronomer Jacobus Bruwer.

    <span class="mw-page-title-main">1368 Numidia</span> Asteroid

    1368 Numidia, provisional designation 1935 HD, is a stony background asteroid from the central regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 30 April 1935, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after the ancient North African kingdom of Numidia.

    3184 Raab, provisional designation 1949 QC, is a dark background asteroid and a potentially slow rotator from the central regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 22 August 1949, by South African astronomer Ernest Leonard Johnson at the Union Observatory in Johannesburg. The likely C-type asteroid could have a long rotation period of 275 hours. It was named after Austrian amateur astronomer and software engineer Herbert Raab.

    <span class="mw-page-title-main">3428 Roberts</span>

    3428 Roberts is a background asteroid from the central regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 1 May 1952, by Indiana University's Indiana Asteroid Program at its Goethe Link Observatory near Brooklyn, Indiana, United States. The asteroid has a short rotation period of 3.28 hours. It was named in memory of American astronomer Walter Orr Roberts.

    2629 Rudra, provisional designation 1980 RB1, is a sizable Mars-crossing asteroid and slow rotator inside the asteroid belt, approximately 5.3 kilometers (3.3 miles) in diameter. It was discovered on 13 September 1980, by American astronomer Charles Kowal at the Palomar Observatory in California. The dark B-type asteroid has a long rotation period 123 hours and likely an elongated shape. It was named after Rudra from Hindu mythology.

    1989 Tatry, provisional designation 1955 FG, is a carbonaceous Vestian asteroid and tumbling slow rotator from the inner regions of the asteroid belt, approximately 16 kilometers in diameter.

    <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.

    <span class="mw-page-title-main">1546 Izsák</span>

    1546 Izsák, provisional designation 1941 SG1, is a background asteroid from the outer regions of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 28 September 1941, by Hungarian astronomer György Kulin at the Konkoly Observatory near Budapest, Hungary. The asteroid was named after Hungarian astronomer Imre Izsák.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1623 Vivian (1948 PL)" (2017-03-30 last obs.). Jet Propulsion Laboratory . Retrieved 30 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1623) Vivian". Dictionary of Minor Planet Names – (1623) Vivian. Springer Berlin Heidelberg. p. 129. doi:10.1007/978-3-540-29925-7_1624. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (1623) Vivian". Asteroid Lightcurve Database (LCDB). Retrieved 28 December 2016.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923 . Bibcode:2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63 .
    5. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv: 1209.5794 . Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. S2CID   46350317 . Retrieved 28 December 2016.
    6. 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)
    7. 1 2 Molnar, Lawrence A.; Haegert, Melissa, J.; Beaumont, Christopher N.; Block, Marjorie J.; Brom, Timothy H.; Butler, Andrew R.; et al. (March 2008). "Lightcurve Analysis of a Magnitude Limited Asteroid Sample". The Minor Planet Bulletin. 35 (1): 9–12. Bibcode:2008MPBu...35....9M. ISSN   1052-8091 . Retrieved 28 December 2016.{{cite journal}}: CS1 maint: multiple names: authors list (link)
    8. 1 2 Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv: 1601.02909 . Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. S2CID   118427201 . Retrieved 28 December 2016.
    9. 1 2 Hanus, J.; Broz, M.; Durech, J.; Warner, B. D.; Brinsfield, J.; Durkee, R.; et al. (November 2013). "An anisotropic distribution of spin vectors in asteroid families". Astronomy and Astrophysics. 559: 19. arXiv: 1309.4296 . Bibcode:2013A&A...559A.134H. doi:10.1051/0004-6361/201321993. S2CID   119214895 . Retrieved 28 December 2016.
    10. 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 28 December 2016.
    11. 1 2 "1623 Vivian (1948 PL)". Minor Planet Center. Retrieved 28 December 2016.
    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. Bibcode:2009dmpn.book.....S. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.