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HD 10647 - Wikipedia

Coordinates:

01^h 42^m 29.32^s, −53° 44′ 27.00″

From Wikipedia, the free encyclopedia

HD 10647
Observation data Epoch J2000.0 Equinox J2000.0
Location of HD 10647 (circled)
Constellation	Eridanus
Right ascension	01^h 42^m 29.3145^s^[1]
Declination	−53° 44′ 26.991″^[1]
Apparent magnitude (V)	5.52^[2]
Characteristics
Spectral type	F9V^[3]
B−V color index	0.551^[2]
Astrometry

Radial velocity (R_v)	27.64(12)^[1] km/s
Proper motion (μ)	RA: 166.041(34) mas/yr^[1] Dec.: −105.496(46) mas/yr^[1]
Parallax (π)	57.6409 ± 0.0453 mas^[1]
Distance	56.58 ± 0.04 ly (17.35 ± 0.01 pc)
Absolute magnitude (M_V)	4.32

Details

Mass	1.11 ± 0.02^[3] `M`_☉
Radius	1.10 ± 0.02^[3] `R`_☉
Luminosity	1.41^[3] `L`_☉
Temperature	6,218 ± 20^[3] K
Metallicity [Fe/H]	0.00 ± 0.01^[3] dex
Rotation	10 ± 3^[3]
Rotational velocity (v sin i)	4.9^[3] km/s
Age	1.4 ± 0.9^[3] Gyr

Other designations
q¹ Eridani, 5 G. Eridani, CPD−54° 365, GJ 3109, HIP 7978, HR 506, SAO 232501^[4]
Database references
SIMBAD	data

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 1.75 billion years old, it is also younger. An extrasolar planet was discovered orbiting this star in 2003.

Planetary system

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* [1]. The Anglo-Australian Planet Search team initially did not detect the planet in 2004,^[5] though a solution was made by 2006.^[6] The CORALIE data was finally published in 2013.^[3]

The IRAS infrared space telescope detected an excess of infrared radiation from the star, indicating a possible circumstellar disk.^[7] Out of the 300 nearest Sun-like stars, the disk has the highest fractional luminosity out of all of them.^[8] It is unusually bright, but not unusually massive; the lower bound of the mass is 8 times that of the Earth.^[8]

The inclination of the disk is relatively high,^[9] and the disk is asymmetrical, being more extended in the northeast direction than the southwest.^[8] 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.^[8]

There is some evidence for an additional, warm asteroid belt-like component further in, at 3 to 10 AU away from the star.^[8]

The HD 10647 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b^[3]	>0.94 ± 0.08 $M$ _J	2.015 ± 0.011	989.2 ± 8.1	0.15 ± 0.08	—	—
Dust disk^[8]	3–10 AU				—	—
Dust disk^[8]	34–134 AU				76.1 ± 1.0°	—

References

^ ^a ^b ^c ^d ^e 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 Decin, G.; et al. (November 2003), "Age Dependence of the Vega Phenomenon: Observations", The Astrophysical Journal, 598 (1): 636–644, arXiv:astro-ph/0308294, Bibcode:2003ApJ...598..636D, doi:10.1086/378800, S2CID 16751327
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Marmier, M.; et al. (2013). "The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets". Astronomy and Astrophysics. 551. A90. arXiv:1211.6444. Bibcode:2013A&A...551A..90M. doi:10.1051/0004-6361/201219639. S2CID 59467665.
^ "HD 10647". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-05-11.
^ Jones, H. R. A.; et al. (2004). "HD10647 and the Distribution of Exoplanet Properties with Semi-major Axis". Extrasolar Planets: Today and Tomorrow. 321: 298. Bibcode:2004ASPC..321..298J.
^ Butler, R. P.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. S2CID 119067572.
^ Stencel and Backman; Backman, Dana E. (1991). "A survey for infrared excesses among high galactic latitude SAO stars". The Astrophysical Journal Supplement Series. 75: 905–924. Bibcode:1991ApJS...75..905S. doi:10.1086/191553.
^ ^a ^b ^c ^d ^e ^f ^g Lovell, J. B.; Marino, S.; Wyatt, M. C.; Kennedy, G. M.; MacGregor, M. A.; Stapelfeldt, K.; Dent, B.; Krist, J.; Matrà, L.; Kral, Q.; Panić, O.; Pearce, T. D.; Wilner, D. (2021). "High-resolution ALMA and HST images of q¹ Eri: An asymmetric debris disc with an eccentric Jupiter". Monthly Notices of the Royal Astronomical Society. 506 (2): 1978–2001. arXiv:2106.05975. doi:10.1093/mnras/stab1678.
^ Liseau; et al. (2008). "q1 Eridani: a solar-type star with a planet and a dust belt". Astronomy and Astrophysics Letters. 480 (3): L47–L50. arXiv:0803.1294. Bibcode:2008A&A...480L..47L. doi:10.1051/0004-6361:20079276. S2CID 7872724.

External links

"A Jovian planet around HD 10647". Geneva Observatory.
"HD 10647 / HR 506 / CP(D)-54 365 (q1 Eridani)". SolStation. Retrieved 2008-06-12.
Sky Map: HD 10647

Constellation of Eridanus

Stars

Bayer	α (Achernar) β (Cursa) γ (Zaurak) δ (Rana) ε (Ran) ζ (Zibal) η (Azha) θ¹ (Acamar) θ² ι κ λ μ ν ξ ο¹ (Beid) ο² (40, Keid) π ρ¹ ρ² ρ³ τ¹ τ² (Angetenar) τ³ τ⁴ τ⁵ τ⁶ τ⁷ τ⁸ τ⁹ υ¹ υ² (Theemin) υ³ (Beemim) υ⁴ φ χ ψ ω
Flamsteed	14 15 17 (v) 39 (A) 45 51 (c) 53 (Sceptrum) 54 58 64 66
Variable	DO DZ EF EK EM (d) EP KT
HR	486 (p) 487 (p) 506 (q¹) 789 (s) 859 1008 (e) 1106 (y) 1143 (h) 1189 (f) 1190 (f) 1195 (g) 1483 1536 1614
HD	18742 (Ayeyarwady) 19467 28185 30562 30856 (Mouhoun) 30963
Other	2MASS J04151954−0935066 DENIS 0255−4700 Gliese 86 Gliese 180 GJ 1062 GJ 3293 GJ 3323 HIP 12961 (Koeia) LTT 1445 LP 890-9 Mothra WASP-22 (Tojil) WASP-35 WASP-50 (Chaophraya) WASP-78 WASP-79 (Montuno) WISE J0336−0143

Exoplanets	51 Eridani b ε Eridani b (AEgir) Gliese 86 b HD 10647 b HD 18742 b (Bagan) HD 28185 b HD 30562 b HD 30856 Ab (Nakanbé) WASP-79b (Pollera)

Nebulae

NGC	1535

Galaxies

NGC	782 852 939 1084 1132 1140 1172 1187 1189 1190 1191 1192 1199 1222 1232 1234 1241 1253 1262 1266 1269 1291 1300 1309 1325 1332 1337 1345 1347 1353 1357 1369 1386 1395 1400 1403 1404 1407 1426 1427A 1436 1437 1439 1452 1460 1487 1531 1532 1592 1600 1614 1637 1721 1723 1725 1728 1741
Other	Eridanus II ESO 198-13 ESO 0313-192 IC 1953 IC 2006 LEDA 74886 MRC 0406-244 PKS 0208-512 PKS 0405–385 PKS 0420-014 UGC 2812

Galaxy clusters	Abell 383 Eridanus Cluster Eridanus Group MACS J0416.1-2403

Astronomical events	GRB 080913 HE0435-1223