43 Ariadne (IPA: [ˌeɹiˈædni]) 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 April 15, 1857 and named after the Greek heroine Ariadne. Norman Robert Pogson (March 23, 1829 – June 23, 1891) was a British astronomer. ... April 15 is the 105th day of the year in the Gregorian calendar (106th in leap years). ... 1857 was a common year starting on Thursday (see link for calendar). ... Two bodies with a slight difference in mass orbiting around a common barycenter. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... November 26 is the 330th day (331st in leap years) of the year in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... The Julian day or Julian day number (JDN) is the (integer) number of days that have elapsed since Monday, January 1, 4713 BC in the proleptic Julian calendar [1]. That day is counted as Julian day zero. ... A diagram of Keplerian orbital elements. ... A diagram of Keplerian orbital elements. ... The semi-major axis of an ellipse In geometry, the term semi-major axis (also semimajor axis) is used to describe the dimensions of ellipses and hyperbolae. ... Look up giga- in Wiktionary, the free dictionary. ... The or meter (see spelling differences) is a measure of length. ... The astronomical unit (AU or au or a. ... (This page refers to eccitricity in astrodynamics. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... Look up day in Wiktionary, the free dictionary. ... In astronomy, a Julian year is a unit of time defined as exactly 365. ... The orbital speed of a body, generally a planet, a natural satellite, an artificial satellite, or a multiple star, is the speed at which it orbits around the barycenter of a system, usually around a more massive body. ... Look up second in Wiktionary, the free dictionary. ... In the study of orbital dynamics the mean anomaly is a measure of time, specific to the orbiting body p, which is a multiple of 2π radians at and only at periapsis. ... Inclination in general is the angle between a reference plane and another plane or axis of direction. ... A degree (in full, a degree of arc, arc degree, or arcdegree), usually symbolized °, is a measurement of plane angle, representing 1／360 of a full rotation. ... The Longitude of the ascending node (☊, also noted Ω) is one of the orbital elements used to specify the orbit of an object in space. ... The argument of periapsis (ω) is the orbital element describing the angle between an orbiting bodys ascending node (the point where the body crosses the plane of reference from South to North) and its periapsis (the point of closest approach to the central body), measured in the orbital plane and... Unsolved problems in physics: What causes anything to have mass? The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. Mass is the property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. It was assigned to the United States in 1889 and is periodically recertified and traceable to the primary international standard, The Kilogram, held at the Bureau International des Poids et... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... A cubic centimetre (cm3) is an SI derived unit of volume, equal to the volume of a cube with side length of 1 centi metre. ... The surface gravity of a Killing horizon is the acceleration, as exerted at infinity, needed to keep an object at the horizon. ... Space Shuttle Atlantis launches on mission STS-71. ... In astronomy, a rotation period is the time an astronomical object takes to complete one revolution around its rotation axis. ... Albedo is the ratio of reflected to incident electromagnetic radiation power. ... Fig. ... The kelvin (symbol: K) is a unit increment of temperature and is one of the seven SI base units. ... Celsius is, or relates to, the Celsius temperature scale (previously known as the centigrade scale). ... Approximately 17% of all known asteroids are of an S-type (for stony) composition. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... Articles with similar titles include the NATO phonetic alphabet, which has also informally been called the “International Phonetic Alphabet”. For information on how to read IPA transcriptions of English words, see IPA chart for English. ... The asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. ... 253 Mathilde, a C-type asteroid. ... The Flora family of asteroids is a large grouping of S-type asteroids in the inner main belt, whose origin and properties are relatively poorly understood at present. ... Norman Robert Pogson (March 23, 1829 – June 23, 1891) was a British astronomer. ... April 15 is the 105th day of the year in the Gregorian calendar (106th in leap years). ... 1857 was a common year starting on Thursday (see link for calendar). ... Drinking scene with Dionysus and Ariadne on his lap. ...

Characteristics

Ariadne is very elongate (almost twice as long as its smallest dimension) and likely bi-lobed^[3] 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°, 235°) with a 10° uncertainty^[2]. This gives an axial tilt of about 105°. Prograde motion is the motion of a planetary body in a direction similar to that of other bodies within its system, and is sometimes called direct motion, especially in astrology. ... The ecliptic coordinate system is a celestial coordinate system that uses the ecliptic for its fundamental plane. ... In astronomy, Axial tilt is the inclination angle of a planets rotational axis in relation to a perpendicular to its orbital plane. ...

Aspects

January 31 is the 31st day of the year in the Gregorian calendar. ... shelby was here 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... March 17 is the 76th day of the year (77th in leap years) in the Gregorian calendar. ... shelby was here 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... May 1 is the 121st day of the year in the Gregorian calendar (122nd in leap years). ... shelby was here 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... January 7 is the 7th day of the year in the Gregorian calendar. ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... September 6 is the 249th day of the year (250th in leap years). ... 2005 (MMV) was a common year starting on Saturday of the Gregorian calendar. ... 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May 20 is the 140th day of the year (141st in leap years) in the Gregorian calendar. ... 2009 (MMIX) will be a common year starting on Thursday of the Gregorian calendar. ... November 24 is the 328th day (329th in leap years) of the year in the Gregorian calendar. ... 2009 (MMIX) will be a common year starting on Thursday of the Gregorian calendar. ... January 13 is the 13th day of the year in the Gregorian calendar. ... This article or section does not cite its references or sources. ... March 4 is the 63rd day of the year (64th in leap years) in the Gregorian calendar. ... This article or section does not cite its references or sources. ... September 15 is the 258th day of the year (259th in leap years) in the Gregorian calendar. ... May 22 is the 142nd day of the year (143rd in leap years) in the Gregorian calendar. ... 2011 (MMXI) will be a common year starting on Saturday of the Gregorian calendar. ... June 28 is the 179th day of the year (180th in leap years) in the Gregorian calendar. ... 2011 (MMXI) will be a common year starting on Saturday of the Gregorian calendar. ... August 3 is the 215th day of the year in the Gregorian calendar (216th in leap years), with 150 days remaining. ... 2011 (MMXI) will be a common year starting on Saturday of the Gregorian calendar. ... April 14 is the 104th day of the year (105th in leap years) in the Gregorian calendar, with 261 days remaining. ... 2012 (MMXII) will be a leap year starting on Sunday of the Gregorian calendar. ... October 27 is the 300th day of the year (301st in leap years) in the Gregorian calendar, with 65 days remaining. ... 2012 (MMXII) will be a leap year starting on Sunday of the Gregorian calendar. ... December 17 is the 351st day of the year (352nd in leap years) in the Gregorian calendar. ... 2012 (MMXII) will be a leap year starting on Sunday of the Gregorian calendar. ... February 4 is the 35th day of the year in the Gregorian calendar. ... This article or section does not cite any references or sources. ... August 10 is the 222nd day of the year (223rd in leap years) in the Gregorian calendar. ... This article or section does not cite any references or sources. ... March 9 is the 68th day of the year in the Gregorian calendar (69th in leap years). ... 2014 (MMXIV) will be a common year starting on Wednesday of the Gregorian calendar. ... April 19 is the 109th day of the year in the Gregorian calendar (110th in leap years). ... 2014 (MMXIV) will be a common year starting on Wednesday of the Gregorian calendar. ... May 30 is the 150th day of the year in the Gregorian calendar (151st in leap years). ... 2014 (MMXIV) will be a common year starting on Wednesday of the Gregorian calendar. ... February 24 is the 55th day of the year in the Gregorian calendar. ... 2015 (MMXV) will be a common year starting on Thursday of the Gregorian calendar. ... September 30 is the 273rd day of the year (274th in leap years) in the Gregorian calendar. ... 2015 (MMXV) will be a common year starting on Thursday of the Gregorian calendar. ... November 19 is the 323rd day of the year (324th in leap years) in the Gregorian calendar. ... 2015 (MMXV) will be a common year starting on Thursday of the Gregorian calendar. ... January 3 is the 3rd day of the year in the Gregorian calendar. ... 2016 (MMXVI) will be a leap year starting on Friday of the Gregorian calendar. ... July 10 is the 191st day of the year (192nd in leap years) in the Gregorian calendar. ... 2016 (MMXVI) will be a leap year starting on Friday of the Gregorian calendar. ... January 17 is the 17th day of the year in the Gregorian calendar. ... 2017 (MMXVII) will be a common year starting on Sunday of the Gregorian calendar. ... March 5 is the 64th day of the year in the Gregorian calendar (65th in leap years). ... 2017 (MMXVII) will be a common year starting on Sunday of the Gregorian calendar. ... April 21 is the 111th day of the year in the Gregorian calendar (112th in leap years). ... 2017 (MMXVII) will be a common year starting on Sunday of the Gregorian calendar. ... December 17 is the 351st day of the year (352nd in leap years) in the Gregorian calendar. ... 2017 (MMXVII) will be a common year starting on Sunday of the Gregorian calendar. ... August 26 is the 238th day of the year (239th in leap years) in the Gregorian calendar. ... 2018 (MMXVIII) will be a common year starting on Monday of the Gregorian calendar. ... October 13 is the 286th day of the year (287th in leap years) in the Gregorian calendar. ... 2018 (MMXVIII) will be a common year starting on Monday of the Gregorian calendar. ... November 23 is the 327th day of the year (328th in leap years) in the Gregorian calendar, with 38 days remaining. ... 2018 (MMXVIII) will be a common year starting on Monday of the Gregorian calendar. ... June 12 is the 163rd day of the year (164th in leap years) in the Gregorian calendar. ... 2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar. ... December 14 is the 348th day of the year (349th in leap years) in the Gregorian calendar. ... 2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar. ... February 2 is the 33rd day of the year in the Gregorian calendar. ... 2020 (MMXX) will be a leap year starting on Wednesday of the Gregorian calendar. ... March 22 is the 81st day of the year (82nd in leap years) in the Gregorian calendar. ... 2020 (MMXX) will be a leap year starting on Wednesday of the Gregorian calendar. ... October 16 is the 289th day of the year (290th in leap years). ... 2020 (MMXX) will be a leap year starting on Wednesday of the Gregorian calendar. ...

Trivia

• For reasons unknown, "Asteroid 43 Ariadne" was included in a list of names of supporters of the NASA spacecraft Stardust that was stored on a microchip within the spacecraft.

The National Aeronautics and Space Administration (NASA) is an agency of the United States federal government, responsible for the nations public space program. ... The Space Shuttle Discovery as seen from the International Space Station. ... An artists rendering of Stardust (NASA image) The Stardust capsule with cometary and interstellar samples landed at the U.S. Air Force Utah Test and Training Range at 10:10 UTC (15 January 2006) in the Bonneville Salt Flats. ...

References

1. Supplemental IRAS Minor Planet Survey
2. M. Kaasalainen, J. Torppa & J. Piironen Models of Twenty Asteroids from Photometric Data, Icarus, Vol. 159, p. 369 (2002).
3. P. Tanga et al Asteroid observations with the Hubble Space Telescope, Astronomy & Astrophysics, Vol. 401, p. 733 (2003).
4. PDS lightcurve data
5. G. A. Krasinsky et al Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).

External links

• shape model deduced from lightcurve
• bi-lobed shape model from Hubble lightcurves