FACTOID # 41: On the probability of not reaching 40 graph, the top 34 countries are all African.
 
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Encyclopedia > 399 Persephone
399 Persephone
Discovery A
Discoverer Max Wolf
Discovery date February 23, 1895
Alternate
designations
1895 BP B
Category Main belt
Orbital elements C
Epoch 30 January 2005 (JD 2453400.5)
Eccentricity (e) 0.068
Semi-major axis (a) 457.292 Gm (3.057 AU)
Perihelion (q) 426.404 Gm (2.85 AU)
Aphelion (Q) 488.18 Gm (3.263 AU)
Orbital period (P) 1952.055 d (5.34 a)
Mean orbital speed 17.04 km/s
Inclination (i) 13.082°
Longitude of the
ascending node
(Ω)
346.609°
Argument of
perihelion
(ω)
189.387°
Mean anomaly (M) 204.409°
Physical characteristics
Dimensions 49.0 km
Mass unknown
Density unknown
Surface gravity unknown
Escape velocity unknown
Rotation period unknown
Spectral class unknown
Absolute magnitude 9.0
Albedo unknown
Mean surface
temperature
unknown

399 Persephone is a typical Main belt asteroid. Maximilian Franz Joseph Cornelius Wolf (June 21, 1863 – October 3, 1932) was a German astronomer. ... February 23 is the 54th day of the year in the Gregorian Calendar. ... 1895 was a common year starting on Tuesday (see link for calendar). ... The provisional designation of comets and asteroids are similar to each other: they both follow a pattern set in 1925 by the Minor Planet Center of the IAU. Historical designations At first, astronomers strove to assign symbols to the minor planets: 1 Ceres a stylized sickle 2 Pallas a lozenge... Minor planets, or planetoids are minor bodies of the solar system orbiting the sun that are larger than meteoroids (the largest of which might be taken to be around 10 meters or so across) but smaller than major planets (Mercury having a diameter of about 4880 km). ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... January 30 is the 30th day of the year in the Gregorian Calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ... The Julian day or Julian day number (JDN) is the number of SI days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC in the proleptic Julian calendar 1. ... (This page refers to eccitricity in astrodynamics. ... In geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... Giga (symbol: G) is a prefix in the SI system of units denoting 109, or 1 000 000 000. ... The metre is the basic unit of length in the International System of Units (SI: Système International dUnités). ... The astronomical unit (AU or au or a. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... A day is any of several different units of time. ... A Julian year is the length of an average year in the Julian calendar, 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. ... The second (symbol s) is a unit for time, and one of seven SI base units. ... Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees. ... A degree (or in full a degree of arc), usually symbolized °, is a measurement of plane angle, representing 1/360 of a full rotation. ... The Longitude of the ascending node () is one of the orbital elements used to specify the orbit of an object in space. ... The argument of the perihelion is one of the orbital elements describing the orbit of a planet. ... 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. ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... It has been suggested that Law of universal gravitation be merged into this article or section. ... In physics, for a given gravitational field and a given position, the escape velocity is the minimum speed an object without propulsion, at that position, needs to have to move away indefinitely from the source of the field, as opposed to falling back or staying in an orbit within a... In astronomy, a rotation period is the time an astronomical object takes to complete one revolution around its rotation axis. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standardized distance away. ... The albedo is a measure of reflectivity of a surface or body. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ...


It was discovered by Max Wolf on February 23, 1895 in Heidelberg. Due to the discovery of 2003 UB313 there is minor speculation that it's name may be taken away and replaced so that this "10th planet" can have the name Persephone. Maximilian Franz Joseph Cornelius Wolf (June 21, 1863 – October 3, 1932) was a German astronomer. ... February 23 is the 54th day of the year in the Gregorian Calendar. ... 1895 was a common year starting on Tuesday (see link for calendar). ... Heidelberg - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... The title of this article is incorrect due to technical limitations. ...



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398 Admete is a typical Main belt asteroid. ... 400 Ducrosa is a typical Main belt asteroid. ...

The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)

  Results from FactBites:
 
399 Persephone Information (104 words)
399 Persephone is a typical Main belt asteroid.
Since the discovery of 2003 UB there is minor speculation that its name may be taken away and replaced so that this "10th planet" can have the name Persephone.
View a list of authors or edit this article.
Tenth planet - Wikipedia, the free encyclopedia (1098 words)
The major planets are, by tradition, named after Greco-Roman gods; in Greco-Roman mythology Roman Pluto corresponds to Greek Hades, and Persephone is Hades' wife, held in the darkness of the underworld, hence hers is thought an appropriate name for the 10th planet.
It should be noted that the mother of Persephone, Demeter; and of Proserpina, Ceres; have been used as names of asteroids, 1 Ceres and 1108 Demeter respectively; while Hades has not been used as a name for a body in the Solar System.
In Douglas Adams's novel Mostly Harmless, the tenth planet is officially called Persephone, but nicknamed Rupert, and is inhabited by the crew of a spaceship who have forgotten almost everything about their mission, except that they are supposed to be "monitoring" something.
  More results at FactBites »


 
 

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