cometary nebula

cometary nebula

(kom -ĕ-tair-ee) A fan-shaped reflection nebula whose illuminating star lies at the vertex of the fan. Hubble's variable nebula is an example.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

cometary nebula

[′käm·ə‚ter·ē ′neb·yə·lə]
(astronomy)
A fan-shaped reflection nebula that resembles a comet in appearance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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It has since been identified as the prototypical cometary nebula, a class of fan-shaped reflection nebulae that are often associated with T Tauri stars (very young, variable, low-mass stars often in binary systems; some have circumstellar disks and are likely progenitors of planetary systems).
This tiny cometary nebula is located southwest of M78 about 13' from the brightest part of the nebula and just 5' south of NGC 2064.
Little-Known Treasures of Orion Object Type Mag(v) FSR 983 Asterism 9.3 52 Orionis Double star 6.0, 6.0 Cederblad 59 Cometary nebula -- NGC 2022 Planetary nebula 11.6 Kohoutek 1-7 Planetary nebula 14.0 Abell 12 Planetary nebula 12.0 NGC 2141 Open cluster 9.4 Lower's Nebula Emission nebula 8.4 Object Size/Sep RA Dec.