1249 Rutherfordia

Last updated

1249 Rutherfordia
1249Rutherfordia (Lightcurve Inversion).png
Lightcurve-based 3D-model of Rutherfordia
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date4 November 1932
Designations
(1249) Rutherfordia
Named after
 Rutherford [2]
(inner suburb of New York City)
1932 VB ·1925 SF
1942 XV
main-belt  ·(inner)
Flora [3] [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 84.98 yr (31,040 days)
Aphelion 2.3947 AU
Perihelion 2.0534 AU
2.2240 AU
Eccentricity 0.0767
3.32 yr (1,211 days)
150.14°
0° 17m 49.92s / day
Inclination 4.8756°
259.00°
223.37°
Physical characteristics
Dimensions12.41±0.8 km [5]
13.063±0.097 km [6]
14.060±0.069 km [7]
15.77±0.69 km [8]
18.20±0.01 h [9]
18.220±0.005 h [10]
18.24 h [9]
18.242±0.001 h [11]
0.172±0.017 [8]
0.2193±0.0240 [7]
0.251±0.058 [6]
0.2778±0.038 [5]
Tholen = S [1] [3]
B–V = 0.883 [1]
U–B = 0.484 [1]
10.88±0.28 [12]  ·11.54 [1] [3] [5] [7] [8]

    1249 Rutherfordia, provisional designation 1932 VB, is an elongated, stony Florian asteroid from the inner regions of the asteroid belt, approximately 13 kilometers in diameter. Discovered by Karl Reinmuth at Heidelberg Observatory in 1932, the asteroid was named after Rutherford, New Jersey a suburb of New York City, United States. [13]

    Contents

    Discovery

    Rutherfordia was discovered on 4 November 1932, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. [13] On 29 November 1932, it was independently discovered by Belgian astronomer Eugène Delporte at the Uccle Observatory in Belgium. [2] The Minor Planet Center only recognizes the first discoverer. [13]

    Orbit and classification

    Rutherfordia is a member of the Flora family ( 402 ), [3] [4] a giant asteroid family and the largest family of stony asteroids in the main-belt. [14] It orbits the Sun in the inner asteroid belt at a distance of 2.1–2.4  AU once every 3 years and 4 months (1,211 days; semi-major axis of 2.22 AU). Its orbit has an eccentricity of 0.08 and an inclination of 5° with respect to the ecliptic. [1]

    The asteroid was first observed as 1925 SF at Simeiz Observatory in September 1925. The body's observation arc begins at Heidelberg on 22 November 1932, or three weeks after its official discovery observation. [13]

    Physical characteristics

    In the Tholen classification, Rutherfordia is an S-type asteroid, [1] [3] as is the overall spectral type of the Flora family. [14] : 23 

    Rotation period

    Several rotational lightcurves of Rutherfordia have been obtained from photometric observations since 2001. [9] [10] [11] The so-far best-rated lightcurve with a rotation period of 18.242 hours and a brightness amplitude of 0.71 magnitude, was measured by the Spanish amateur astronomer group OBAS in December 2015 ( U=3 ). [3] [11] The asteroid's elongated shape, indicated by its high brightness amplitude has previously been confirmed by physical modelling (see below).

    Spin axis

    In 2013, an international study modeled a lightcurve from various data sources including the Uppsala Asteroid Photometric Catalogue and the Palomar Transient Factory survey. The lightcurve gave a concurring period of 18.2183 hours and allowed for the determination of two spin axis of (32.0°, 74.0°) and (197.0°, 65.0°) in ecliptic coordinates (λ, β). [15]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Rutherfordia measures between 12.41 and 15.77 kilometers in diameter and its surface has an albedo between 0.172 and 0.2778. [5] [6] [7] [8]

    The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.2778 and a diameter of 12.41 kilometers based on an absolute magnitude of 11.54. [3]

    Naming

    Several sources erroneously attributed the naming of this asteroid to famous New Zealand-born British physicist Ernest Rutherford (1871–1937). [2] This minor planet, however, was named after the city of Rutherford, New Jersey, which is an inner suburb of metropolitan New York City. The naming was proposed by Irving Meyer and endorsed by German astronomer Gustav Stracke who mentioned on a postcard in February 1937, that his American college, Meyer, who himself did not discover any asteroids, requested the naming after the city of Rutherford, where a private observatory was located at the time.

    Related Research Articles

    <span class="mw-page-title-main">406 Erna</span> Main-belt asteroid

    Erna, provisional designation 1895 CB, is a dark asteroid of the background population in the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered by French astronomer Auguste Charlois at Nice Observatory on 22 August 1895. The asteroid was presumably named after Erna Bidschof, the granddaughter of Johann Palisa.

    606 Brangäne, provisional designation 1906 VB, is an asteroid from the central regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 18 September 1906, by astronomer August Kopff at the Heidelberg Observatory in southwest Germany. The unusual K-type asteroid is the namesake of the small Brangäne family and has a rotation period of 12.3 hours. It was named after Brangaine, a character from the opera Tristan und Isolde by Richard Wagner.

    2009 Voloshina, provisional designation 1968 UL, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 27 kilometers in diameter.

    <span class="mw-page-title-main">1010 Marlene</span>

    1010 Marlene is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 47 kilometers in diameter. It was discovered on 12 November 1923, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after German actress and singer Marlene Dietrich.

    1085 Amaryllis, provisional designation 1927 QH, is a background asteroid from the outer regions of the asteroid belt, approximately 69 kilometers in diameter. It was discovered on 31 August 1927, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the flowering planet Amaryllis.

    <span class="mw-page-title-main">1129 Neujmina</span>

    1129 Neujmina is an Eos asteroid from the outer regions of the asteroid belt. It was discovered on 8 August 1929, by astronomer Praskoviya Parchomenko at the Simeiz Observatory on the Crimean peninsula. The stony S-type asteroid has a rotation period of 5.1 hours and measures approximately 34 kilometers in diameter. It was named after Soviet astronomer Grigory Neujmin.

    3037 Alku, provisional designation 1944 BA, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 17 January 1944, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.

    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.

    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">1241 Dysona</span>

    1241 Dysona, provisional designation 1932 EB1, is a dark background asteroid from the outer regions of the asteroid belt, approximately 77 kilometers in diameter. It was discovered on 4 March 1932, by English astronomer Harry Edwin Wood at the Union Observatory in Johannesburg, South Africa. The asteroid was named after English astronomer Frank Watson Dyson.

    <span class="mw-page-title-main">1540 Kevola</span>

    1540 Kevola, provisional designation 1938 WK, is a dark background asteroid from the outer regions of the asteroid belt, approximately 42 kilometers in diameter. It was discovered on 16 November 1938, by astronomer Liisi Oterma at the Iso-Heikkilä Observatory in Turku, Finland. The asteroid was named after the Finnish Kevola Observatory.

    <span class="mw-page-title-main">1436 Salonta</span>

    1436 Salonta, provisional designation 1936 YA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. Discovered by György Kulin at the Konkoly Observatory in 1936, the asteroid was later named for the Romanian city of Salonta, the birthplace of the discoverer.

    1258 Sicilia, provisional designation 1932 PG, is a dark background asteroid from the outer regions of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Italian island of Sicily.

    <span class="mw-page-title-main">1493 Sigrid</span>

    1493 Sigrid, provisional designation 1938 QB, is a dark Nysian asteroid from the inner regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 26 August 1938, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. It was named after Sigrid Strömgren, wife of astronomer Bengt Strömgren.

    1585 Union, provisional designation 1947 RG, is a dark background asteroid from the outer regions of the asteroid belt, approximately 52 kilometers in diameter. It was discovered on 7 September 1947, by South African astronomer Ernest Johnson at the Union Observatory in Johannesburg, South Africa. The asteroid was named after the discovering observatory.

    1242 Zambesia is a dark background asteroid from the central regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 28 April 1932, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the large Zambezi basin in southern Africa.

    <span class="mw-page-title-main">1407 Lindelöf</span>

    1407 Lindelöf, provisional designation 1936 WC, is an asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 21 November 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The asteroid was named after Finnish topologist Ernst Lindelöf.

    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.

    1724 Vladimir, provisional designation 1932 DC, is a rare-type asteroid from the central region of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 28 February 1932, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle, Belgium. The asteroid was later named by astronomer Milorad Protić after his grandson, Vladimir.

    References

    1. 1 2 3 4 5 6 7 8 "JPL Small-Body Database Browser: 1249 Rutherfordia (1932 VB)" (2017-10-29 last obs.). Jet Propulsion Laboratory. Retrieved 27 December 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1249) Rutherfordia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 104. doi:10.1007/978-3-540-29925-7_1250. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (1249) Rutherfordia". Asteroid Lightcurve Database (LCDB). Retrieved 27 December 2017.
    4. 1 2 "Asteroid 1249 Rutherfordia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    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 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.
    7. 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.
    8. 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)
    9. 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (1249) Rutherfordia". Geneva Observatory. Retrieved 27 December 2017.
    10. 1 2 Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region" (PDF). Astronomy and Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi: 10.1051/0004-6361/201219199 .
    11. 1 2 3 Aznar Macias, Amadeo; Carreno Garcerain, Alfonso; Arce Masego, Enrique; Brines Rodriguez, Pedro; Lozano de Haro, Juan; Fornas Silva, Alvaro; et al. (July 2016). "Twenty-one Asteroid Lightcurves at Group Observadores de Asteroides (OBAS): Late 2015 to Early 2016". The Minor Planet Bulletin. 43 (3): 257–263. Bibcode:2016MPBu...43..257A. ISSN   1052-8091.
    12. ↑ 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.
    13. 1 2 3 4 "1249 Rutherfordia (1932 VB)". Minor Planet Center. Retrieved 27 December 2017.
    14. 1 2 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628 . Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN   9780816532131.
    15. ↑ Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; Warner, B. D.; Pilcher, F.; et al. (March 2013). "Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution". Astronomy and Astrophysics. 551: 16. arXiv: 1301.6943 . Bibcode:2013A&A...551A..67H. doi:10.1051/0004-6361/201220701.
    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.