HR 515

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Template:Short description

HR 515
File:VYPscLightCurve.png
Light curves for VY Piscium, adapted from Valtier et al. (1974).[1] The vertical scale is hundredths of a magnitude.
Observation data
Epoch J2000      Equinox J2000
Constellation Pisces[2]
Right ascension Template:RA[3]
Declination Template:DEC[3]
Apparent magnitude (V) 6.54 - 6.59[4]
Characteristics
Spectral type A8 III[5] or F0V[6]
B−V Template:Engvar Script error: No such module "val".[2]
Variable type δ Sct[7]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[8] km/s
Proper motion (μ) RA: +49.315[3] mas/yr
Dec.: +3.096[3] mas/yr
Parallax (π)6.4827±0.1220 mas[3]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.84[2]
Details
Mass1.7[9] Template:Solar mass
Radius4.7[9] Template:Solar radius
Luminosity60[9] Template:Solar luminosity
Surface gravity (log g)3.32[9] cgs
Temperature7,401[9] K
Metallicity [Fe/H]−0.02[10] dex
Rotational velocity (v sin i)96[11] km/s
Age944[10] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[12]
Database references
SIMBADdata

Script error: No such module "Check for unknown parameters".

HR 515 is a variable star in the zodiac constellation of Pisces, near the eastern constellation border with Aries. Before the constellation borders were officially set, it held the Flamsteed designation of 3 Arietis, abbreviated 3 Ari). This star has the variable star designation VY Piscium, or VY Psc for short.[13] It is a white-hued star that is near the lower limit of visibility to the naked eye with an apparent visual magnitude that ranges from 6.54 down to 6.59.[4] Parallax measurements provide a distance estimate of approximately 503 light years from the Sun.[3]

Gray and associates (1989) found a stellar classification of A8 III[5] for this object, matching an evolved A-type giant star. Abt and Morrell (1995) listed a class of F0V,[6] suggesting it is an F-type main-sequence star. It is a Delta Scuti variable whose brightness varies between magnitudes 6.54 and 6.59[4] with a period of 0.219 days.[7] The star shows a high rate of spin with a projected rotational velocity of 96 km/s.[11] It has 4.7 times the size of the Sun and is radiating 60 times the Sun's luminosity from its photosphere at an effective temperature of 7,401 K.[9]

References

<templatestyles src="Reflist/styles.css" />

  1. ↑ Script error: No such module "Citation/CS1".
  2. ↑ a b c Template:Cite XHIP
  3. ↑ a b c d e f Template:Cite Gaia DR3
  4. ↑ a b c Script error: No such module "citation/CS1".
  5. ↑ a b Script error: No such module "Citation/CS1".
  6. ↑ a b Script error: No such module "Citation/CS1".
  7. ↑ a b Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "Citation/CS1".
  9. ↑ a b c d e f Script error: No such module "Citation/CS1".
  10. ↑ a b Script error: No such module "Citation/CS1".
  11. ↑ a b Script error: No such module "Citation/CS1".
  12. ↑ Template:Cite simbad
  13. ↑ Script error: No such module "citation/CS1".

Script error: No such module "Check for unknown parameters".

Template:Sky Template:Stars of Pisces

Retrieved from "http://debianws.lexgopc.com/wiki143/index.php?title=HR_515&oldid=2018315"