### Some articles on *parsecs*:

2M1207b - Discovery, Identification and Properties

... for the distance to 2M1207b was 70

... for the distance to 2M1207b was 70

**parsecs**... American astronomer Eric Mamajek reported a more accurate distance (53 ± 6**parsecs**) to 2M1207b using the moving cluster method ... moving cluster distance, leading to a distance estimate of 52.75+1.04 −1.00**parsecs**or 172 ± 3 light years ...U Geminorum

... for U Geminorum have varied from 52

... for U Geminorum have varied from 52

**parsecs**(170 light-years) to 112**parsecs**(370 light-years), with a best estimate of 82**parsecs**(270 light-years) ...Gliese Catalogue Of Nearby Stars - First Edition and Supplements

... of nearly one thousand stars located within 20

... of nearly one thousand stars located within 20

**parsecs**(65 ly) of Earth, listing their known properties and ordered by right ascension ... as the Catalogue of Nearby Stars in 1969, extending the range out to 22**parsecs**(72 ly) ... and associates, extended the range out to 25**parsecs**(82 ly) ...Cygnus X-1 - Star System

... distance to this system is about 1,860 ± 120

... distance to this system is about 1,860 ± 120

**parsecs**(6,100 ± 390 light-years) ... named Cygnus OB3, which is located at roughly 2,000**parsecs**from the Sun ... HDE 226868 is about 60**parsecs**from the center of the association, and could have reached that separation in about 7±2 Ma—which roughly agrees with estimated age of the association ...Distance Modulus - Definition

... It is related to the distance in

... It is related to the distance in

**parsecs**by This definition is convenient because the observed brightness of a light source is related to its distance by the inverse square law (a source twice as ... Suppose a light source has luminosity L(d) when observed from a distance of**parsecs**, and luminosity L(10) when observed from a distance of 10**parsecs**... Isolating from the equation, we find that the distance in**parsecs**is given by The uncertainty in the distance in**parsecs**(δd) can be computed from the uncertainty in the distance modulus (δμ) using which is ...Main Site Subjects

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