Alpha Delphini

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Alpha Delphini (α Del / α Delphini) is a multiple star in the constellation Delphinus. It also has the name Sualocin, which was given to it as a practical joke by the astronomer Niccolò Cacciatore; the name is the Latinized version (Nicolaus) of his given name, spelled backwards. Alpha Delphini has seven components: A and G, a physical binary, and B, C, D, E, and F, which are optical and have no physical association with A and G.

**Alpha Delphini A/G**
Observation data Epoch J2000.0 (ICRS)
Constellation	Delphinus
Right ascension	20^h 39^m 38.287^s/38.287^s
Declination	+15° 54′ 43.49″/43.15″
Apparent magnitude (V)	3.9/6.4; combined, 3.77
Distance	241 ± 13 ly (73.8 ± 3.7 pc)
Spectral type	A: B9V
Other designations
α Del, 9 Del, BD +15 4222, CCDM J20396+1555A/G, HD 196867, HIP 101958, HR 7906, SAO 106357
Data sources:
Hipparcos Catalogue, CCDM (2002)

**Alpha Delphini B/C/D/E/F**
Observation data Epoch J2000.0 (ICRS)
Constellation	Delphinus
Right ascension	20^h 39^m 36.5^s/34.9^s/39.5^s/35.1^s/42.9^s
Declination	+15° 54′ 21″/ +15° 54′ 49″/ +15° 54′ 01″/ +15° 55′ 15″/ +15° 54′ 09″
Apparent magnitude (V)	13.4/11.9/12.9/12.6/10.7
Other designations
CCDM J20396+1555B/C/D/E/F; also, see designations for Alpha Delphini A/G
Data sources:
CCDM (2002)