14 Irene
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| Discovery A | |
|---|---|
| Discoverer | John Russell Hind |
| Discovery date | May 19, 1851 |
| Alternate designations B |
A906 QC; A913 EA; 1952 TM |
| Category | Main belt |
| Orbital elements C | |
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|
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| Eccentricity (e) | 0.168 |
| Semi-major axis (a) | 386.730 Gm (2.585 AU) |
| Perihelion (q) | 321.602 Gm (2.150 AU) |
| Aphelion (Q) | 451.858 Gm (3.020 AU) |
| Orbital period (P) | 1518.176 d (4.16 a) |
| Mean orbital speed | 18.52 km/s |
| Inclination (i) | 9.106° |
| Longitude of the ascending node (Ω) |
86.493° |
| Argument of perihelion (ω) |
96.473° |
| Mean anomaly (M) | 326.489° |
| Physical characteristics D | |
| Dimensions | 181.8 km [1] |
| Mass | 6.3×1018 kg |
| Density | 2 ? g/cm³ |
| Surface gravity | 0.051 m/s² |
| Escape velocity | 0.096 km/s |
| Rotation period | 0.6275 d[2] |
| Spectral class | S-type asteroid [1] |
| Absolute magnitude | 6.30 |
| Albedo (geometric) | 0.160[1] |
| Mean surface temperature |
~170 K |
14 Irene (eye-ree'-nee (key)) is a very large Main belt asteroid.
It was discovered by J. R. Hind on May 19, 1851 and named after Eirene, a personification of peace in Greek mythology, one of the Horae, daughter of Zeus and Themis. The name was suggested by Sir John Herschel. Hind wrote,
- You will readily discover that this name [...] has some relation to this event (the Great Industrial Exhibition) which is now filling our metropolis [London] with the talent of all civilised nations, with those of Peace, the productions of Art and Science, in which all mankind must feel an interest.
The Great Exhibition of the Works of Industry of All Nations in the Crystal Palace of Hyde Park, London ran from May 1 until October 18, 1851.
Hind suggested that the symbol for the asteroid should be "A dove carrying an olive-branch, with a star on its head",[3] but an actual drawing of the symbol was never made before the use of graphical symbols to represent asteroids was dropped entirely.[4]
The fairly flat Irenian lightcurves indicate somewhat spherical proportions. There have been four reported stellar occultation events by Irene.
[edit] Aspects
[edit] Reference
- ^ a b c http://spiff.rit.edu/richmond/parallax/phot/LCSUMPUB.TXT
- ^ http://www.psi.edu/pds/archive/lc.html
- ^ Hind, John Russell (1852). "From a Letter of Mr. Hind to the Editor". Astron. J. 2: 22-23.
- ^ http://aa.usno.navy.mil/hilton/AsteroidHistory/minorplanets.html
- Gould, B. A., New planet, Astronomical Journal, Vol. 2, iss. 27, p. 22, June 1851
| Minor planets | ||
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| Previous minor planet | 14 Irene | Next minor planet |
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| Vulcanoids | Near-Earth asteroids | Main belt | Jupiter Trojans | Centaurs | Damocloids | Comets | Trans-Neptunians (Kuiper belt · Scattered disc · Oort cloud) |
| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
