NGC 1220

NGC 1220 is a young compact open cluster in the constellation Perseus. It was discovered by John Herschel in 1831.[5]

NGC 1220
NGC 1220 from the Digitized Sky Survey (DSS)
Observation data (J2000.0 epoch)
Right ascension03h 11m 40s[1][Note 1]
Declination53° 20′ 45″[2][Note 2]
Distance5,900 light-years (1,800 pc)[2]
Apparent magnitude (V)11.8[3]
Apparent dimensions (V)2.6′[1]
Physical characteristics
Radius3.4 light-years (1.05 pc)[2]
Estimated age60 million years[2]
Other designationsCr 37, OCL 380[2][4]
Associations
ConstellationPerseus

Location

The cluster is located at l = 143.04°, b = −3.96° in the galactic coordinate system, and is 120 parsecs above the galactic plane.[1][2] It is approximately 6m 42s east and 10′ 12″ south from the nearest visible star, γ Persei.[3]

Composition

NGC 1220 consists of approximately 26 stars with spectral types between A0 and B9, although the majority fall between A5 and B5.[2]

Notes
  1. Exact values for seconds vary from 40.0s (Ortolani et al. (2002)) to 40.8s (SIMBAD).
  2. Estimates for arcseconds vary from 38″ (SIMBAD) to 53.4″ (NED).

References
  1. "NGC 1220". Strasbourg Astronomical Data Center. Retrieved 2024-04-02.
  2. Ortolani, S.; Carraro, G.; Covino, S.; Bica, E.; Barbuy, B. (2002-04-09). "A photometric study of the young open cluster NGC 1220". Galactic structure, stellar clusters, and populations. Astronomy & Astrophysics. 391 (1). EDP Sciences (published 2002-07-29): 179–185. doi:10.1051/0004-6361:20020794. hdl:10183/98516.{{cite journal}}: CS1 maint: date and year (link)
  3. "NGC 1220 – Open Cluster in Perseus". The Sky Live. Retrieved 2024-03-30.
  4. Collinder, Per. "On Structural Properties of Open Galactic Clusters and their Spatial Distribution. Catalog of Open Galactic Clusters". Annals of the Observatory of Lund. 2: 4.
  5. "NGC1220". NGC/IC Restoration Project. Retrieved 2024-03-30.
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