Astronomy:NGC 1555

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NGC 1555
Reflection nebula
Variable nebula
A near-infrared image of NGC 1555
Credit: 2MASS/NASA
Observation data: J2000.0 epoch
Right ascension 4h 21m 57.1s[1]
Declination+19° 32′ 7″[1]
ConstellationTaurus
DesignationsHind's Nebula,[1] Sharpless 238, PGC 1595946
See also: Lists of nebulae

NGC 1555, sometimes known as Hind's Variable Nebula,[2] Sh2-238 or HH 155, is a variable nebula 4 light years across,[3] illuminated by the star T Tauri, located in the constellation Taurus. It is 400 light years away from Earth, and has a magnitude (B)[4] of 9.98. It is also in the second Sharpless catalog as 238. It is a Herbig–Haro object.[5] The nebula was discovered on October 11, 1852, by John Russell Hind.

NGC 1555 from the 0.8m Schulman at the Mount Lemmon Sky Center, AZ.
Timelapse of variable nebula activity of NGC 1555 from October 2022 to March 2023 compiled from contributions from the big amateur telescope (https://bigamateurtelescope.com/)

See also

References

  1. ↑ 1.0 1.1 1.2 "NGC 1555". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+1555. 
  2. ↑ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579. http://www.deep-sky-atlas.com/. 
  3. ↑ "Hind's Variable Nebula, a variable nebula in Taurus" (in nl-NL). 2013-11-28. http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/hinds-variable-nebula-by-adam-block/. 
  4. ↑ "NGC 1555 (Hind's Nebula) - Reflection Nebula in Taurus | TheSkyLive.com". https://theskylive.com/sky/deepsky/ngc1555-hinds-nebula-object. 
  5. ↑ "Sh 2-238". http://galaxymap.org/cgi-bin/details.py?id=21556&t=hii&s=4_p31.5xp30.5&name=S238. 



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