Iota Piscium

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Iota Piscium[1]
Diagram showing star positions and boundaries of the Pisces constellation and its surroundings
Cercle rouge 100%.svg

Location of ι Piscium(circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pisces
Right ascension 23h 39m 57.04138s[2]
Declination +05° 37′ 34.6475″[2]
Apparent magnitude (V) 4.13[3]
Characteristics
Spectral type F7 V[3]
U−B color index −0.01[4]
B−V color index +0.50[4]
Astrometry
Radial velocity (Rv) +5.4[5] km/s
Proper motion (μ) RA: 377.15±0.19[2] mas/yr
Dec.: −437.43±0.15[2] mas/yr
Parallax (π) 72.92 ± 0.15[2] mas
Distance 44.73 ± 0.09 ly
(13.71 ± 0.03 pc)
Details
Radius 1.595±0.014[6] R☉
Luminosity 3.555±0.058[6] L☉
Surface gravity (log g) 4.11[7] cgs
Temperature 6,288±37[6] K
Metallicity [Fe/H] −0.12[7] dex
Rotational velocity (v sin i) 6.67[8] km/s
Other designations
ι Piscium, ι Psc,Iota Psc, 17 Piscium, BD+04°5035, CCDM J23399+0538A, FK5 892, GC 32879, HD 222368, HIP 116771, HR 8969, IDS 23348+0505 A, PPM 174312, SAO 128310, WDS J23399+0538A[1]

Iota Piscium (Iota Psc, ι Piscium, ι Psc) is an F-type main-sequence star 45 light years from Earth,[2] in the constellation Pisces. Its spectral type is F7V, which means that it is somewhat larger and brighter than the Sun, but still within the range considered to have the potential for Earth-like planets. It has a surface temperature of about 6,000 to 7,500 K. Iota Piscium is a suspected to be a variable star, and was once thought to have one or two stellar companions, but both are line-of-sight coincidences.[9]

Naming

In Chinese, 霹靂 (Pī Lì), meaning Thunderbolt, refers to an asterism consisting of refers to an asterism consisting of ι Piscium, β Piscium, γ Piscium, θ Piscium, and ω Piscium. Consequently, ι Piscium itself is known as 霹靂四 (Pī Lì sì, English: the Fourth Star of Thunderbolt.)[10]

References

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  1. ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Lua error in package.lua at line 80: module 'strict' not found. Vizier catalog entry
  3. ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.. See Table 10.
  7. ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  9. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  10. ↑ (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 8 日
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