The three-letter abbreviation for the constellation, as adopted by the IAU in 1922, is "Del".
The official constellation boundaries, as set by Eugène Delporte in 1930, are defined by a polygon of 14 segments.
Due to its proper motion it has been in the (round-figure parameter) bounds of the constellation since 1992. HR Delphini was a nova that brightened to magnitude 3.5 in December 1967.
Due to its proper motion it has been in the (round-figure parameter) bounds of the constellation since 1992. HR Delphini was a nova that brightened to magnitude 3.5 in December 1967.
Another nova by the name V339 Delphini was detected in 2013; it peaked at magnitude 4.3 and was the first nova observed to produce lithium. Musica, also known by its Flamsteed designation 18 Delphini, is one of the five stars with known planets located in Delphinus.
"tail [of the] Dolphin"), or Aldulfin, is a star of stellar class B6 III and magnitude 4, at 330 ly. Zeta Delphini, blue-white main-sequence star of magnitude 4.6, was in 2014 discovered to have a brown dwarf orbiting around it.
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Page generated on 2021-08-05