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Red Supergiant star in the constellation Perseus
PR Persei
Location of PR Persei (circled) near the
Double Cluster (north is down)
Observation dataEpoch J2000.0 Equinox J2000.0
Constellation
Perseus
Right ascension 02h 21m 42.41s [ 1]
Declination
+57° 51′ 46.1″[ 1]
Apparent magnitude (V)7.7 – 8.2[ 2]
Characteristics
Evolutionary stage
Red supergiant
Spectral type
M1 Iab-Ib[ 2]
Variable type
LC [ 2]
Astrometry Radial velocity (Rv )−45.9[ 1] km/s Proper motion (μ) RA: −0.857[ 1] mas /yr Dec.: −1.059[ 1] mas /yr Parallax (π)0.3621± 0.0239 mas [ 1] Distance 9,000 ± 600 ly pc ) Details Mass 9.2[ 3] M ☉ Radius 401[ 4] R ☉ Luminosity 27,542[ 5] L ☉ Surface gravity (log g )0.89[ 6] cgs Temperature 3,715[ 5] K Metallicity [Fe/H] −0.22[ 6] dex Other designations PR Persei , BD +57°550HD 14404HIP 10995SAO 23234TIC 348442493TYC 3694-152-1IRAS 02181+57382MASS J02214241+5751460[ 7] Database references SIMBAD data
PR Persei (also known as HD 14404 , HIP 10995 , or BD+57 550 ) is a red supergiant star located in the constellation of Perseus in the northern celestial hemisphere. Classified as a variable star of spectral type M1-Iab-Ib, it exhibits mild brightness variations due to pulsations in its outer layers. It resides in the Milky Way galaxy , approximately 9,000 light-years from the Solar System. It can be seen near the Double Cluster of Perseus through a telescope or binoculars.
A light curve for PR Persei, plotted from Hipparcos [ 8] PR Persei is a cool, luminous red supergiant with a spectral type of M1 Iab-Ib, indicating an intermediate luminosity class between Iab and Ib supergiants.[ 9]
^ a b c d e f Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1. arXiv :2208.00211 Bibcode :2023A&A...674A...1G . doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source at VizieR .^ a b c "PR Persei" . International Variable Star Index . AAVSO . Retrieved 2025-10-26 .^ Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics . 658 : A91. arXiv :2111.01860 Bibcode :2022A&A...658A..91A . doi :10.1051/0004-6361/202142369 . ^ Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission" . The Astrophysical Journal Supplement Series . 268 (1): 4. arXiv :2208.11721 Bibcode :2023ApJS..268....4F . doi :10.3847/1538-4365/acdee5 ^ a b Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants" . The Astrophysical Journal . 902 (1): 24. arXiv :2008.11723 Bibcode :2020ApJ...902...24D . doi :10.3847/1538-4357/abb318 ^ a b Huson, Dylan; Cowan, Indiana; Sizemore, Logan; Kounkel, Marina; Hutchinson, Brian (2025). "Gaia Net: Toward Robust Spectroscopic Parameters of Stars of all Evolutionary Stages" . The Astrophysical Journal . 984 (1): 58. arXiv :2503.02958 Bibcode :2025ApJ...984...58H . doi :10.3847/1538-4357/adc2fa ^ "PR Persei" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2025-10-15 .^ EAS (1997). "The HIPPARCOS and TYCHO catalogues" . Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission . ESA SP Series. 1200 . Noordwijk, Netherlands: ESA Publications Division. Bibcode :1997HIP...C......0E . ISBN 9290923997 . Retrieved 26 October 2025 . ^ Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020-10-01). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants" . The Astrophysical Journal . 902 (1): 24. arXiv :2008.11723 Bibcode :2020ApJ...902...24D . doi :10.3847/1538-4357/abb318 ISSN 0004-637X .
