Delta Crucis is the western arm, very similar in size and distance to alpha Crucis, and part of the star cluster mentioned above. The star is a beta-CMa type variable (see below).
Double stars in Crux: ...
[3023] delta Crucis, or Palida in Portuguese, is a subgiant and a Beta Cephei variable, changing its brightness within a period of 1.3 hours. Its rotation period is relatively short, less than 1.3 days.
Crux, the Southern Cross, is so dominated by the four stars that make it (Acrux, Mimosa, Gacrux, and Delta Cru) that we tend to pay little attention to the others that inhabit the constellation.
Decrux Delta Crucis
Deneb Alpha Cygni
Deneb Algedi Delta Capricorni
Deneb Dulfim Epsilon Delphini
Deneb el Okab Zeta Aquilae
Deneb Kaitos Beta Ceti
Deneb Kaitos Schemali Iota Ceti
Denebola Beta Leonis
Dheneb Eta Ceti
Diadem Alpha Comae Berenices ...
16 4656 delta CRU 12 15 08.6 -58 44 56 B2IV 2.80 -0.23 4700 epsilon CRU 12 21 21.5 -60 24 04 K3-4III 3.59 1.42 4679 zeta CRU 12 18 26.1 -64 00 11 B2.5V 4.04 -0.17 4616 eta CRU 12 06 52.8 -64 36 49 F2III 4.15 0.34 4599 theta CRU 12 03 01.
The star lies in the part (12:31:10.0-57:6:47.6, ICRS 2000.0) or "top" of Constellation Crux (see chart and photo), the Southern Cross -- northwest of Mimosa (Beta Crucis), northeast of Delta Crucis, and north of Acrux (Alpha Crucis).
 See also: Delta, Star, Sky, Constellation, Crux
  
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