T Persei

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T Persei

A visual band light curve For T Persei, plotted from AAVSO data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 2h 19m 21.87717s[2]
Declination +58° 57′ 40.3455″[2]
Apparent magnitude (V) 8.34-9.70[3]
Characteristics
Spectral type M2Iab[4]
U−B color index +2.62[5]
B−V color index +2.33[5]
Variable type
SRc[3]
Distance
2345±55[7] pc
Absolute magnitude (MV)−6.90±0.07[7]
Details
dex
AAVSO
 0212+58
Database references
SIMBADdata

T Persei is a

constellation Perseus. It varies in brightness between magnitudes 8.3 and 9.7 and is considered to be a member of the Double Cluster
.

T Persei is a member of the Perseus OB1 association around the h and χ Persei open clusters, around 2 degrees north of the centre of the clusters. It is generally treated as an outlying member of the clusters.[8] It lies half a degree away from S Persei, another red supergiant Double Cluster member.

T Per is a

long secondary period.[4][9] It is relatively inactive for the red supergiant star, with low mass loss rate 8×10−6 Solar_mass/year and no detectable dust shell.[10]

The

arc-seconds away. This is derived from Hipparcos measurements. However, no other sources report a companion.[11]

References

  1. ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. ^
    doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  3. ^
    Bibcode:2009yCat....102025S
    .
  4. ^
    S2CID 5203133
    .
  5. ^
    Bibcode:2002yCat.2237....0D
    .
  6. S2CID 17804304
    .
  7. ^
    S2CID 17085548
    .
  8. doi:10.1086/301319
    .
  9. Bibcode:2009JRASC.103...11P
    .
  10. S2CID 73650032
    .
  11. doi:10.1086/323920
    .
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