1704 Wachmann

Last updated

1704 Wachmann
1704Wachmann (Lightcurve Inversion).png
Light curve based 3D-model of Wachmann
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date7 March 1924
Designations
(1704) Wachmann
Named after
 Arno Wachmann
(German astronomer) [2]
A924 EE ·1947 CE
1957 BJ
main-belt  ·(inner) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 93.16 yr (34,026 days)
Aphelion 2.4163 AU
Perihelion 2.0292 AU
2.2228 AU
Eccentricity 0.0871
3.31 yr (1,210 days)
67.047°
0° 17m 50.64s / day
Inclination 0.9715°
259.47°
280.77°
Physical characteristics
Dimensions6.618±0.070 [4]
6.934±0.070 km [5]
7.82 km (calculated) [3]
3.314±0.001 h [6]
0.1767±0.0133 [5]
0.193±0.036 [4]
0.20 (assumed) [3]
S [3]
12.9 [1] [3]  ·12.97±0.13 [7]  ·13.3 [5]

    1704 Wachmann, provisional designation A924 EE, is a stony asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 7 March 1924. It was later named after astronomer Arno Wachmann. [2] [8]

    Contents

    Classification and orbit

    The S-type asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.4  AU once every 3 years and 4 months (1,210 days). Its orbit has an eccentricity of 0.09 and an inclination of 1° with respect to the ecliptic. [1] No precoveries were taken. The asteroid's observation arc begins 3 days after its official discovery observation. [8]

    Physical characteristics

    Lightcurves

    In April 2007, a rotational lightcurve Wachmann was obtained at the U.S. Sandia View Observatory in New Mexico ( H03 ). Lightcurve analysis gave a well-defined rotation period of 3.314±0.001 hours with a brightness variation of 0.40 magnitude ( U=3 ). [6]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wachmann measures 6.6 and 6.9 kilometers in diameter, and its surface has an albedo of 0.177 and 0.193, respectively, [4] [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.8 kilometers, based on an absolute magnitude of 12.9. [3]

    Naming

    This minor planet was named for Arno Wachmann (1902–1990), long-time astronomer at the Bergedorf Observatory in Hamburg, discoverer of minor planets and comets, and observer of variable and binary stars. He is best known for the co-discovery of the three "Schwassmann–Wachmann" comets, 29P, 31P and 73P. [2] The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3933). [9]

    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.

    1049 Gotho, provisional designation 1925 RB, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 53 kilometers in diameter. It was discovered on 14 September 1925, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. Although the name of the asteroid is a masculine German name, it is not known to refer to a particular individual.

    1059 Mussorgskia, provisional designation 1925 OA, is a background asteroid from the central regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 19 July 1925, by Soviet astronomer Vladimir Albitsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for Russian composer Modest Mussorgsky. The X- or C-type asteroid has a rotation period of 5.636 hours.

    1106 Cydonia, provisional designation 1929 CW, is a Eunomian asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 5 February 1929, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named for the fruit-bearing tree Cydonia (quince). The S-type asteroid has a relatively short rotation period of 2.7 hours.

    1123 Shapleya, provisional designation 1928 ST, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 21 September 1928, by Russian astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula. It was named after American astronomer Harlow Shapley.

    <span class="mw-page-title-main">1457 Ankara</span> Stony asteroid from the central region of the asteroid belt

    1457 Ankara, provisional designation 1937 PA, is a stony asteroid from the central region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 3 August 1937, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany, and later named for the Turkish capital city of Ankara.

    <span class="mw-page-title-main">2839 Annette</span> Flora family asteroid

    2839 Annette is a bright Flora asteroid from the inner regions of the asteroid belt. It was discovered on 5 October 1929, by American astronomer Clyde Tombaugh at Lowell Observatory during his search for Pluto. The presumed S-type asteroid has a rotation period of 10.5 hours and measures approximately 5 kilometers in diameter. It was named after the discoverer's daughter.

    2033 Basilea, provisional designation 1973 CA, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 February 1973, by astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The asteroid was named for the Swiss city of Basel.

    2034 Bernoulli, provisional designation 1973 EE, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter.

    1354 Botha, provisional designation 1935 GK, is an exceptionally dark background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 3 April 1935, by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after South African prime minister Louis Botha.

    1215 Boyer, provisional designation 1932 BA, is a stony Eunomian asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered by astronomer Alfred Schmitt in 1932, who named it after French astronomer and college Louis Boyer.

    1184 Gaea, provisional designation 1926 RE, is an Aerian asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 5 September 1926, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the goddess of Earth, Gaea (Gaia), from Greek mythology.

    1412 Lagrula, provisional designation 1937 BA, is an asteroid from the inner regions of the asteroid belt, approximately 7 or 23 kilometers in diameter, depending on the body's divergent reflectivity measurements.

    1907 Rudneva, provisional designation 1972 RC2, is a stony background asteroid from the central regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 11 September 1972, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula. The asteroid was named after Soviet geodesist and war hero Yevgeniya Rudneva.

    <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.

    1807 Slovakia, provisional designation 1971 QA, is a stony asteroid and slow rotator from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 20 August 1971, by Slovak astronomer Milan Antal at Skalnaté pleso Observatory in the High Tatras mountains of Slovakia and named after the Slovak Republic.

    1461 Jean-Jacques, provisional designation 1937 YL, is a metallic asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 30 December 1937, by French astronomer Marguerite Laugier at Nice Observatory in southern France, who named it after her son Jean-Jacques Laugier.

    1530 Rantaseppä, provisional designation 1938 SG, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. Discovered by Yrjö Väisälä at Turku Observatory in 1938, it was later named after Finnish astronomer Hilkka Rantaseppä-Helenius.

    1708 Pólit, provisional designation 1929 XA, is a very dark asteroid from the outer region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 30 November 1929, by Spanish astronomer of Catalan origin Josep Comas i Solà at the Fabra Observatory in Barcelona, and was later named after Catalan astronomer Isidre Pòlit i Boixareu.

    <span class="mw-page-title-main">1380 Volodia</span> Main-belt asteroid

    1380 Volodia is a carbonaceous background asteroid from the outer region of the asteroid belt. It was discovered on 16 March 1936, by French astronomer Louis Boyer at the North African Algiers Observatory in Algeria. Five nights later, Volodia was independently discovered by Eugène Delporte at Uccle in Belgium. The dark D-type asteroid has a rotation period of 8 hours and measures approximately 22 kilometers in diameter.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1704 Wachmann (A924 EE)" (2017-05-05 last obs.). Jet Propulsion Laboratory . Retrieved 7 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1704) Wachmann". Dictionary of Minor Planet Names – (1704) Wachmann. Springer Berlin Heidelberg. pp. 135–136. doi:10.1007/978-3-540-29925-7_1705. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (1704) Wachmann". Asteroid Lightcurve Database (LCDB). Retrieved 20 July 2016.
    4. 1 2 3 Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645 . Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121 . Retrieved 8 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 Julian, II, William M. (March 2008). "Period Determination for 1704 Wachmann". The Minor Planet Bulletin. 35 (1): 4. Bibcode:2008MPBu...35....4J. ISSN   1052-8091 . Retrieved 20 July 2016.
    7. ↑ 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 20 July 2016.
    8. 1 2 "1704 Wachmann (A924 EE)". Minor Planet Center. Retrieved 20 July 2016.
    9. ↑ Schmadel, Lutz D. "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.
    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.