HD 10647

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HD 10647
Template:Location mark
Location of HD 10647 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Eridanus[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) +5.52[3]
Characteristics
Evolutionary stage main sequence[2]
Spectral type F9V[4]
B−V Template:Engvar 0.551[3]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[2] km/s
Proper motion (μ) RA: Script error: No such module "val". mas/yr[2]
Dec.: Script error: No such module "val". mas/yr[2]
Parallax (π)57.6409±0.0453 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)4.31[1]
Details
MassScript error: No such module "val".[5] Template:Solar mass
RadiusScript error: No such module "val".[4] Template:Solar radius
Luminosity1.41[4] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[5] cgs
TemperatureScript error: No such module "val".[5] K
Metallicity [Fe/H]Script error: No such module "val".[5] dex
RotationScript error: No such module "val".[4]
Rotational velocity (v sin i)4.9[4] km/s
AgeScript error: No such module "val".[5] Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[6]
Database references
SIMBADdata

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HD 10647 (q1 Eridani) is a 6th-magnitude yellow-white dwarf star, 57 light-years away in the constellation of Eridanus. The star is visible to the unaided eye under very dark skies. It is slightly hotter and more luminous than the Sun, and at 700 million years old, it is also younger. An extrasolar planet was discovered orbiting this star in 2003.

Planetary system

Template:CSS image crop In 2003, Michel Mayor's team announced the discovery of a new planet, HD 10647 b, in Paris at the XIX IAP Colloquium Extrasolar Planets: Today & Tomorrow.[7] The Anglo-Australian Planet Search team initially did not detect the planet in 2004,[8] though a solution was made by 2006.[9] The CORALIE data was finally published in 2013.[4]

The IRAS infrared space telescope detected an excess of infrared radiation from the star, indicating a possible circumstellar disk.[10] Out of the 300 nearest Sun-like stars, the disk has the highest fractional luminosity out of all of them.[11] It is unusually bright, but not unusually massive; the lower bound of the mass is 8 times that of the Earth.[11]

The inclination of the disk is relatively high,[12] and the disk is asymmetrical, being more extended in the northeast direction than the southwest.[11] It extends from 34 astronomical units (AU) at the inner edge to 134 AU at the outer edge. The inner edge is sharp, suggesting the existence of a planet that carved out the edge. HD 10647 b, with a semimajor axis of about 2 AU, is too far to be responsible. However, other potential planets may be responsible for this feature.[11]

If HD 10647 b shares the same orbital inclination as the disk (Script error: No such module "val".), its mass should be about 1.07 Jupiter masses, close to its minimum mass of 0.90 Jupiter masses.[5]

There is some evidence for an additional, warm asteroid belt-like component further in, at 3 to 10 AU away from the star.[11]

Template:OrbitboxPlanet begin Template:OrbitboxPlanet Template:OrbitboxPlanet disk Template:OrbitboxPlanet disk

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Notes

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References

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

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External links

  • Script error: No such module "citation/CS1".
  • Script error: No such module "citation/CS1".
  • Sky Map: HD 10647

Template:Sky

Template:Stars of Eridanus

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