Jones-Emberson 1
Encyclopedia
Jones-Emberson 1 is a 14th magnitude planetary nebula
in the constellation Lynx
at a distance of 1600 light years. It is a larger planetary with low surface brightness. The 16.8-magnitude central star is very blue white dwarf
.
Czechoslovakian astronomers Luboš Perek
and Luboš Kohoutek
, who in 1967 created an extensive catalog of all of the planetary nebulae known in the Milky Way
as of 1964. The numbers indicate the position of the object on the sky. ("PK 164+31.1" basically represents the planetary nebula that when using the galactic coordinate system
has a galactic longitude of 164 degrees, a galactic latitude of +31 degrees, and is the first such object in the Perek-Kohoutek catalog to occupy that particular one square degree area of sky).
Planetary nebula
A planetary nebula is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life...
in the constellation Lynx
Lynx (constellation)
Lynx is a constellation in the northern sky, introduced in the 17th century by Johannes Hevelius. It is named after the lynx, a genus of cat. It is a very faint constellation; its brightest stars form a zigzag line.-History:...
at a distance of 1600 light years. It is a larger planetary with low surface brightness. The 16.8-magnitude central star is very blue white dwarf
White dwarf
A white dwarf, also called a degenerate dwarf, is a small star composed mostly of electron-degenerate matter. They are very dense; a white dwarf's mass is comparable to that of the Sun and its volume is comparable to that of the Earth. Its faint luminosity comes from the emission of stored...
.
Historic data
Discovered in 1939 by R. Jones and R. Emberson, it's "PK" designation comes from the names ofCzechoslovakian astronomers Luboš Perek
Luboš Perek
Luboš Perek is a Czech astronomer, born in 1919.He is most renowned for his Catalogue of Galactic Planetary Nebulae with Luboš Kohoutek in 1967...
and Luboš Kohoutek
Luboš Kohoutek
Luboš Kohoutek is a Czech astronomer.Kohoutek has been interested with astronomy since high school. He studied physics and astronomy at universities in Brno and Prague...
, who in 1967 created an extensive catalog of all of the planetary nebulae known in the Milky Way
Milky Way
The Milky Way is the galaxy that contains the Solar System. This name derives from its appearance as a dim un-resolved "milky" glowing band arching across the night sky...
as of 1964. The numbers indicate the position of the object on the sky. ("PK 164+31.1" basically represents the planetary nebula that when using the galactic coordinate system
Galactic coordinate system
The galactic coordinate system is a celestial coordinate system which is centered on the Sun and is aligned with the apparent center of the Milky Way galaxy. The "equator" is aligned to the galactic plane...
has a galactic longitude of 164 degrees, a galactic latitude of +31 degrees, and is the first such object in the Perek-Kohoutek catalog to occupy that particular one square degree area of sky).