Lemon Slice Nebula

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IC 3568
Emission nebula
Planetary nebula
Image of IC 3568 based on HST data
Observation data: J2000 epoch
Right ascension12h 33m 06s
Declination+82° 34′ 00″
DistanceRoughly 4.5⋅103 ly
Apparent magnitude (V)12.3
ConstellationCamelopardalis
Physical characteristics
RadiusCore: 0.2 ly
DesignationsIC 3568, Perek-Kohoutek 123+34.1 (PK 123+34.1),[1] HD 109540 (central star)[2]
See also: Lists of nebulae
False color image of the bright central region of IC 3568. This is the image that gave the nebula its common name.

IC 3568 is a

spectral type of O(H)3.[6]

IC 3568 was discovered on August 31, 1900[7] by the American astronomer Robert Grant Aitken while using Lick Observatory's 12" Clark Refractor. While examining Comet Borrelly-Brooks, he found that the star BD +83° 357 in Camelopardalis is surrounded by a small circular nebula. This was confirmed with the observatory's 36" Refractor the next night. IC 3568 was misclassified as a compact galaxy in the Uppsala General Catalogue, as UGC 7731.[8]

See also

  • NGC 40 (the Bow-Tie Nebula in Cepheus)

References

  1. ^ The Deep Sky Field Guide to Uranometria 2000.0, Chart 9 (Murray Cragin, James Lucyk, Barry Rappaport), Willmann-Bell, 1993
  2. ^ Sky Catalogue 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects (edited by Alan Hirshfeld and Roger W. Sinnott, 1985), page 308
  3. ^ IC 3568
  4. ^ Portal to the Universe.org
  5. ^ "starrycritters.com". Archived from the original on 2015-04-02. Retrieved 2013-07-29.
  6. S2CID 237940344
    .
  7. ^ Courtney Seligman: Closeup on IC 3568, the Lemon Slice Nebula
  8. ^ Wolfgang Steinicke: Lick Observatory with 36" and 12" Refractor telescopes, used by Robert Grant Aitken during the discovery of IC 3568

External links

  • Media related to IC 3568 at Wikimedia Commons
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