23 Librae - Planetary System

Planetary System

In 1999 an exoplanet 23 Librae b was announced orbiting 23 Librae, and in 2009 an additional planet was detected. Examination of the system in the infrared using the Spitzer Space Telescope did not reveal any excess emission, which might otherwise suggest the presence of a circumstellar debris disk of orbiting dust.

The 23 Librae system
Companion
Mass Semimajor axis
Orbital period
Eccentricity Radius
b ≥ 1.59 ± 0.02 MJ 0.81 ± 0.02 258.19 ± 0.07 0.233 ± 0.002
c ≥ 0.82 ± 0.03 MJ 5.8 ± 0.5 5,000 ± 400 0.12 ± 0.02

Read more about this topic:  23 Librae

Famous quotes containing the words planetary and/or system:

    What is a television apparatus to man, who has only to shut his eyes to see the most inaccessible regions of the seen and the never seen, who has only to imagine in order to pierce through walls and cause all the planetary Baghdads of his dreams to rise from the dust.
    Salvador Dali (1904–1989)

    Hence, a generative grammar must be a system of rules that can iterate to generate an indefinitely large number of structures. This system of rules can be analyzed into the three major components of a generative grammar: the syntactic, phonological, and semantic components.
    Noam Chomsky (b. 1928)