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Encyclopedia > 245 Vera
245 Vera
Discovery A
Discoverer N. R. Pogson
Discovery date February 6, 1885
Alternate
designations
A919 HB B
Category Main belt
Orbital elements C
Epoch 30 January 2005 (JD 2453400.5)
Eccentricity (e) 0.2
Semi-major axis (a) 462.83 Gm (3.094 AU)
Perihelion (q) 370.127 Gm (2.474 AU)
Aphelion (Q) 555.534 Gm (3.714 AU)
Orbital period (P) 1987.628 d (5.44 a)
Mean orbital speed 16.93 km/s
Inclination (i) 5.176°
Longitude of the
ascending node
(Ω)
61.557°
Argument of
perihelion
(ω)
327.096°
Mean anomaly (M) 85.445°
Physical characteristics
Dimensions 80.0 km
Mass unknown
Density unknown
Surface gravity unknown
Escape velocity unknown
Rotation period 14.38 h
Spectral class S
Absolute magnitude 7.82
Albedo 0.208
Mean surface
temperature
unknown

245 Vera is a large Main belt asteroid. It is classified as a S-type asteroid and is probably composed of a mixture of silicates and metals. Norman Robert Pogson (March 23, 1829 – June 23, 1891) was a British astronomer who worked in Oxford and in Chennai, India (then known as Madras). ... February 6 is the 37th day of the year in the Gregorian Calendar. ... 1885 is a common year starting on Thursday. ... 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. ... The hour was originally defined in Egypt as 1/24 of a day, based on their duo-decimal numbering system (which counted finger joints on each hand). ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... 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 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. ... Approximately 17% of all known asteroids are of an S-type (for stony) composition. ... In chemistry, a silicate is a compound consisting of silicon and oxygen (SixOy), one or more metals, and possibly hydrogen. ... Metal - Wikipedia, the free encyclopedia /**/ @import /skins-1. ...


It was discovered by N. R. Pogson on February 6, 1885 in Madras. Norman Robert Pogson (March 23, 1829 – June 23, 1891) was a British astronomer who worked in Oxford and in Chennai, India (then known as Madras). ... February 6 is the 37th day of the year in the Gregorian Calendar. ... 1885 is a common year starting on Thursday. ... Madras refers to: the Indian city of Chennai, formerly known as Madras, the former Indian state, now known as Tamil Nadu a former province of British India, with its capital at the Indian city of Madras (now Chennai): see Madras Presidency a type of fabric which first originated there. ...


Origin of the name is not known.


References


... | Previous asteroid | 245 Vera | Next asteroid | ...


244 Sita is a typical small Main belt asteroid. ... 246 Asporina is a sizeable 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.)

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