1270 Datura
![]() Lightcurve-based 3D-model of Datura | |
Discovery[1] | |
---|---|
Discovered by | G. van Biesbroeck |
Discovery site | Yerkes Obs. |
Discovery date | 17 December 1930 |
Designations | |
(1270) Datura | |
Pronunciation | /dəˈtʊərə, -tjʊərə/[2] |
Named after | Datura stramonium[3] (flowering plant) |
1930 YE · 1953 XF1 A913 VB | |
main-belt[1][4] · (inner) Datura[5] | |
Orbital characteristics[4] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 87.43 yr (31,934 d) |
Aphelion | 2.7003 |
Perihelion | 1.7681 |
2.2342 | |
Eccentricity | 0.2086 |
3.34 yr (1,220 d) | |
122.36° | |
0° 17m 42.36s / day | |
Inclination | 5.9859° |
97.802° | |
258.98° | |
Physical characteristics | |
7.83±0.37 km[6] 8.203±0.152 km[7][8] | |
3.359 h[9] | |
0.288[7][8] 0.291[6] | |
S[9] | |
12.40[7][8] 12.50[1][4][6] 12.61±0.12[10][11] | |
1270 Datura, provisional designation 1930 YE is a stony asteroid and namesake of the young Datura family, located in the inner regions of the asteroid belt, approximately 8 kilometers (5 miles) in diameter. It was discovered on 17 December 1930, by Belgian–American George Van Biesbroeck at the Yerkes Observatory in Williams Bay, Wisconsin, United States.[1] The S-type asteroid has a rotation period of 3.4 hours.[12] It was named after the flowering plant Datura.[3]
Orbit and classification[edit]
Datura is the principal body of the tiny Datura family (411) located within the Flora family region (402),[5] which is one of the largest clans of asteroid families.[13] The Datura family is thought to have recently formed from the collisional destruction of a larger parent body some 450–600 thousand years ago.[9][14]
The asteroid orbits the Sun in the inner asteroid belt at a distance of 1.8–2.7
Naming[edit]
This minor planet was named after the Datura, a genus of poisonous flowering plants.[3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 116).[3]
Physical characteristics[edit]
Datura's spectrum is similar to that of an old S-type asteroid, thought to consist of silicate rocks covered with regolith with composition known from ordinary chondrite.[9] This is in agreement with the overall spectral type of both the Datura and the encompassing Flora family.[15]: 23
Rotation period[edit]
In February 2008, a rotational lightcurve of Datura was obtained from photometric observations by Naruhisa Takato using the Subaru Telescope on Hawaii. Lightcurve analysis gave a sidereal rotation period of 3.359±0.001 hours with a brightness amplitude of 0.46 magnitude (U=3).[9] The result is similar to observations by Wisniewski (3.2 h),[11] Vokrouhlický (3.3583 h),[14] and Székely (3.4 h).[16]
In 2013, lightcurve modelling by an international study using photometric data from the US Naval Observatory, the Uppsala Asteroid Photometric Catalogue and the Palmer Divide Observatory, gave a concurring rotation period of 3.358100 hours as well as a spin axis of (0°, 59.0°) in ecliptic coordinates (
Diameter and albedo[edit]
According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Datura measures 7.83 and 8.20 kilometers in diameter and its surface has an albedo of 0.291 and 0.288, respectively.[6][7][8] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – taken from 8 Flora, the principal body of the Flora family – and derives a diameter of 8.15 kilometers based on an absolute magnitude of 12.61.[12]
References[edit]
- ^ a b c d e "1270 Datura (1930 YE)". Minor Planet Center. Retrieved 31 July 2018.
- ^ "Datura". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b c d Schmadel, Lutz D. (2007). "(1270) Datura". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 105. doi:10.1007/978-3-540-29925-7_1271. ISBN 978-3-540-00238-3.
- ^ a b c d "JPL Small-Body Database Browser: 1270 Datura (1930 YE)" (2018-05-23 last obs.). Jet Propulsion Laboratory. Retrieved 31 July 2018.
- ^ a b "Asteroid 1270 Datura". Small Bodies Data Ferret. Retrieved 31 July 2018.
- ^ a b c d 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)
- ^ a b c d Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System: EAR-A-COMPIL-5-NEOWISEDIAM-V1.0. Bibcode:2016PDSS..247.....M. Retrieved 30 August 2018.
- ^ a b c d 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.
- ^ a b c d e Takato, Naruhisa (October 2008). "Rotation-Resolved Spectroscopy of a Very Young Asteroid, (1270) Datura". The Astrophysical Journal Letters. 685 (2): L161. arXiv:0808.2248. Bibcode:2008ApJ...685L.161T. doi:10.1086/592569.
- ^ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 30 August 2018.
- ^ a b Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (April 1997). "Photometric Observations of 125 Asteroids". Icarus. 126 (2): 395–449. Bibcode:1997Icar..126..395W. doi:10.1006/icar.1996.5665. Retrieved 30 August 2018.
- ^ a b "LCDB Data for (1270) Datura". Asteroid Lightcurve Database (LCDB). Retrieved 30 August 2018.
- ^ 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.
- ^ a b c Vokrouhlický, D.; Durech, J.; Michalowski, T.; Krugly, Yu. N.; Gaftonyuk, N. M.; Kryszczynska, A.; et al. (November 2009). "Datura family: the 2009 update" (PDF). Astronomy and Astrophysics. 507 (1): 495–504. Bibcode:2009A&A...507..495V. doi:10.1051/0004-6361/200912696. Retrieved 30 August 2018.
- ^ Nesvorny, D.; Vokrouhlický, D.; Bottke, W. F. (June 2006). "The Breakup of a Main-Belt Asteroid 450 Thousand Years Ago" (PDF). Science. 312 (5779): 1490. Bibcode:2006Sci...312.1490N. doi:10.1126/science.1126175. PMID 16763141. Retrieved 31 July 2018.
- ^ Székely, P.; Kiss, L. L.; Szabó, Gy. M.; Sárneczky, K.; Csák, B.; Váradi, M.; et al. (August 2005). "CCD photometry of 23 minor planets". Planetary and Space Science. 53 (9): 925–936. arXiv:astro-ph/0504462. Bibcode:2005P&SS...53..925S. doi:10.1016/j.pss.2005.04.006. Retrieved 30 August 2018.
- ^ Durech, J.; Kaasalainen, M.; Warner, B. D.; Fauerbach, M.; Marks, S. A.; Fauvaud, S.; et al. (January 2009). "Asteroid models from combined sparse and dense photometric data" (PDF). Astronomy and Astrophysics. 493 (1): 291–297. Bibcode:2009A&A...493..291D. doi:10.1051/0004-6361:200810393. Retrieved 24 August 2017.
External links[edit]
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1270 Datura at AstDyS-2, Asteroids—Dynamic Site
- 1270 Datura at the JPL Small-Body Database