43 Ariadne
{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| bgcolour = #D6D6D6
| name = 43 Ariadne
| image = 43Ariadne (Lightcurve Inversion).png
| image_scale =
| caption = A three-dimensional model of 43 Ariadne based on its light curve
| discoverer = N. R. Pogson
| discovered = 15 April 1857
| mpc_name = (43) Ariadne
| pronounced = {{IPAc-en|ær|i|ˈ|æ|d|n|iː}}Noah Webster (1884) A Practical Dictionary of the English Language
| adjective = Ariadnean, Ariadnian {{IPAc-en|ær|i|ˈ|æ|d|n|i|ə|n}}
| alt_names =
| named_after = Ariadne
| mp_category = Main belt (Flora family)
| epoch = 26 November 2005 (JD 2453700.5)
| semimajor = 329.646 Gm (2.204 AU)
| perihelion = 274.339 Gm (1.834 AU)
| aphelion = 384.954 Gm (2.573 AU)
| eccentricity = 0.168
| period = 1194.766 d (3.27 a)
| inclination = 3.464°
| asc_node = 264.937°
| arg_peri = 15.948°
| mean_anomaly = 101.582°
| dimensions = {{Val|95|x|60|x|50|u=km}}{{cite web|url=http://www.psi.edu/pds/archive/simps.html |title=IRAS Minor Planet Survey (IMPS)|access-date=2005-12-11 |url-status=dead |archive-url=https://archive.today/20051211134758/http://www.psi.edu/pds/archive/simps.html |archive-date=2005-12-11 }}
| mass = (3.27 ± 1.35/0.59){{e|17}} kg
| density = 3.042 ± 1.255/0.547 g/cm3{{efn|Assuming a diameter of 59 ± 4 km.}}
| rotation = 0.2401 d[http://www.psi.edu/pds/archive/lc.html PDS lightcurve data] {{webarchive |url=https://archive.today/20060614093519/http://www.psi.edu/pds/archive/lc.html |date=14 June 2006 }}
| spectral_type = S
| magnitude = 8.8 to 13.42
| abs_magnitude = 7.93
| angular_size = 0.11–0.025{{pprime}}
}}
43 Ariadne is a fairly large and bright main-belt asteroid. It is the second-largest member of the Flora asteroid family. It was discovered by N. R. Pogson on 15 April 1857 and named after the Greek heroine Ariadne.
Characteristics
Ariadne is very elongate (almost twice as long as its smallest dimension) and probably bi-lobed{{cite journal |last=Tanga |first=P. |date=2003 |title=Asteroid observations with the Hubble Space Telescope |journal=Astronomy & Astrophysics |volume=401 |issue= 2|pages=733–741 |doi=10.1051/0004-6361:20030032 |url=http://www.edpsciences.org/articles/aa/pdf/2003/14/aa3023.pdf |bibcode=2003A&A...401..733T|display-authors=etal|doi-access=free }} or at least very angular. It is a retrograde rotator, although its pole points almost parallel to the ecliptic towards ecliptic coordinates (β, λ) = (−15°, 253°) with a 10° uncertainty.{{cite journal |last=Kaasalainen |first=M. |author2=Torppa, J. |author3=Piironen, J. |date=2002 |title=Models of Twenty Asteroids from Photometric Data |journal=Icarus |volume=159 |issue=2 |pages=369–395 |doi=10.1006/icar.2002.6907 |url=http://www.rni.helsinki.fi/~mjk/IcarPIII.pdf |bibcode=2002Icar..159..369K}} This gives an axial tilt of about 105°.
Studies
43 Ariadne was in a study of asteroids using the Hubble FGS. Asteroids studied include (63) Ausonia, (15) Eunomia, (43) Ariadne, (44) Nysa, and (624) Hektor.
Notes
{{notelist}}
References
{{Reflist|refs=
|last1=Fienga |first1=A.
|last2=Avdellidou |first2=C.
|last3=Hanuš |first3=J.
|date=February 2020
|title=Asteroid masses obtained with INPOP planetary ephemerides
|url=https://academic.oup.com/mnras/article/492/1/589/5658701
|journal=Monthly Notices of the Royal Astronomical Society
|volume=492
|issue=1
|pages=589–602
|doi=10.1093/mnras/stz3407
|doi-access=free}}
}}
External links
- [https://web.archive.org/web/20041015112635/http://www.rni.helsinki.fi/~mjk/IcarPIII.pdf shape model deduced from lightcurve]
- [http://www.edpsciences.org/articles/aa/pdf/2003/14/aa3023.pdf?access=ok bi-lobed shape model from Hubble lightcurves] {{dead link|date=April 2019}}
- {{AstDys|43}}
- {{JPL small body}}
{{Minor planets navigator |42 Isis |number=43 |44 Nysa}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:000043}}
Category:S-type asteroids (Tholen)