Celestial hemisphere:  Southern  ·  Constellation: Pyxis (Pyx)  ·  Contains:  PK253+10.1
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Kohoutek 1-2, Gary Imm
Kohoutek 1-2, Gary Imm

Kohoutek 1-2

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Kohoutek 1-2, Gary Imm
Kohoutek 1-2, Gary Imm

Kohoutek 1-2

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Description

This Astrobin Debut Object is a planetary nebula located 9000 light years away in the constellation of Pyxis at a declination of -29 degrees.  It is a magnitude 15.3 PN which spans 1.8 arc-minutes in our apparent view.  This corresponds to a diameter of 4 light years, twice the size of a typical PN.  This object is a member of the Kohoutek PN catalog.

The nebulae of many PN show the influence of bi-polar jets, but is the only PN I know of which has a visible bi-polar jet.  The jet is emanating from the central progenitor white star, the binary star VW Pyx.  This binary has an orbital period of 0.7 days.  The bi-polar jet is ejecting in the 1 o’clock and 7 o’clock directions. 

The existence of the jet-like feature of K1-2 was first reported in a 1989 publication.  Note that the bottom jet is not quite perfectly aligned with the progenitor star. 

The nebula itself is also interesting.  It is dominant in OIII but has a strong HII region in the center.

I am puzzled why the nebula shape does not seem to be affected by the bi-polar jet structure.  They seem to be 2 independent features of this PN.

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