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{{Short description|Star in the constellation Virgo}}
{{Sky|13|36|31.81|+|03|40|45.9|26.9}}
{{Starbox begin
{{Starbox observe
|epoch=[[J2000]]<ref name="Simbad">{{cite web
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| title =GJ 518 -- White Dwarf
| publisher=[[Centre de Données astronomiques de Strasbourg]]
|
|equinox=[[J2000]]<ref name="Simbad"/>
|constell=
|ra={{RA|13|36|31.81}}<ref name="Simbad"/>
|dec={{DEC|+03|40|45.}}<ref name="Simbad"/>
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{{cite journal
| last=Holberg |first=J. B.
|
|title=A New Look at the Local White Dwarf Population
| year=2008
| journal=[[The Astronomical Journal]]
| volume=135 |issue=4
| pages=1225–1238 | bibcode=2008AJ....135.1225H
| doi=10.1088/0004-6256/135/4/1225
|s2cid=122855486
}}</ref>}}▼
| url=https://commons.erau.edu/cgi/viewcontent.cgi?article=1948&context=publication}}</ref>}}
{{Starbox character
|class=DZ10.0<ref name="Holberg2008"/><ref name="Sion2009">
{{cite journal
| last=Sion |first=Edward M.
|
|title=The White Dwarfs within 20 Parsecs of the Sun: Kinematics and Statistics
| year=2009
| journal=[[The Astronomical Journal]]
| volume=138 |issue=6
| pages=1681–1689 | bibcode=2009AJ....138.1681S
| doi=10.1088/0004-6256/138/6/1681
|arxiv = 0910.1288 |s2cid=119284418
|appmag_1_passband=B
|appmag_1=15.59<ref name="Simbad"/>
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|appmag_7=12.69<ref name="Simbad"/>}}
{{Starbox astrometry
|prop_mo_ra=-
|prop_mo_dec=-
|parallax=
|p_error=
|parallax_footnote=<ref name=EDR3/>
| absmag_v=15.08<ref name="Holberg2008"/><ref name="Yale">[http://vizier.cfa.harvard.edu/viz-bin/VizieR?-source=I/238 Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)]</ref><ref name="note 1" group="note">From apparent magnitude and parallax.</ref>}}
{{Starbox detail
| mass=0.55 ± 0.03<ref name="Holberg2008"/>
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| age_gyr=5.19<ref name="Sion2009"/><ref name="note 3" group="note">White dwarf cooling age, i. e. age as degenerate star (not including lifetime as main sequence star and as giant star)</ref>}}
{{Starbox catalog
|names=WD 1334+039,<ref name="Holberg2008"/><ref name="Sion2009"/> [[Max Wolf|Wolf]] 489,<ref name="Simbad"/> [[Gliese catalogue|Gliese]] 518,<ref name="Simbad"/> [[Luyten Half-Second catalogue|LHS]] 46,<ref name="Holberg2008"/> [[Luyten Five-Tenths catalogue|LFT]] 1023,<ref name="Simbad"/> [[Luyten Two-Tenths catalogue|LTT]] 13961,<ref name="Simbad"/> [[New Luyten Two-Tenths catalogue|NLTT]] 34618,<ref name="Simbad"/> [[Giclas|G]] 062-053,<ref name="Yale"/> [[Giclas|G]] 62-53,<ref name="Simbad"/> [[Giclas|G]] 64-4,<ref name="Simbad"/> EGGR 100,<ref name="Simbad"/> [[Two Micron All-Sky Survey|2MASS]] J13363181+0340458,<ref name="Simbad"/> USNO-B1.0 0936-00229354<ref name="Simbad"/>}}
{{Starbox reference
| Simbad=Gliese+518
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{{Starbox end}}
'''
==Distance==
'''Gliese 518 parallax data'''▼
{| class="wikitable"
|-
! Source !! Paper !! Parallax, [[milliarcsecond|mas]] !! Distance, [[parsec|pc]] !! Distance, [[light-year|ly]] !! Ref.
Line 85 ⟶ 90:
|-
| YPC, 4th edition|| [http://adsabs.harvard.edu/abs/1995GCTP..C......0V van Altena et al., 1995] || 121.4 ± 3.4 || 8.24 ± 0.23 || 26.87 ± 0.75 || <ref name="Yale"/>
|-
| Gaia EDR3, 2020|| - || 119.7566±0.0304 || 8.3503±0.0002 || 27.235±0.007|| <ref name=EDR3/>
|}
==Physical parameters==
==Notes==
<references group="note"/>
==See also==
* [[List of star systems within 25–30 light-years]]
==References==
{{reflist
{{Stars of Virgo}}
{{DEFAULTSORT:Wolf 489}}
[[Category:White
[[Category:Virgo (constellation)]]
[[Category:Gliese and GJ objects|0518]]
[[Category:2MASS objects|J13363181+0340458]]
▲[[es:Wolf 489]]
| |||
Latest revision as of 07:48, 27 February 2023
| Observation data Epoch J2000[1] Equinox J2000[1] | |
|---|---|
| Constellation | Virgo |
| Right ascension | 13h 36m 31.81s[1] |
| Declination | +03° 40′ 45.″[1] |
| Apparent magnitude (V) | 14.66[2] |
| Characteristics | |
| Spectral type | DZ10.0[2][3] |
| Apparent magnitude (B) | 15.59[1] |
| Apparent magnitude (V) | 14.63[1] |
| Apparent magnitude (R) | 14.0[1] |
| Apparent magnitude (I) | 14.1[1] |
| Apparent magnitude (J) | 13.06[1] |
| Apparent magnitude (H) | 12.82[1] |
| Apparent magnitude (K) | 12.69[1] |
| Astrometry | |
| Proper motion (μ) | RA: -3735.839[4] mas/yr Dec.: -1113.581[4] mas/yr |
| Parallax (π) | 119.7566 ± 0.0304 mas[4] |
| Distance | 27.235 ± 0.007 ly (8.350 ± 0.002 pc) |
| Absolute magnitude (MV) | 15.08[2][5][note 1] |
| Details | |
| Mass | 0.55 ± 0.03[2] M☉ |
| Radius | 0.013[2][note 2] R☉ |
| Surface gravity (log g) | 7.95 ± 0.02[2] cgs |
| Temperature | 5030 ± 120[2] K |
| Age | 5.19[3][note 3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
Wolf 489 (WD 1334+039, LHS 46, G 062-053, Gliese 518) is a nearby degenerate star (white dwarf) of spectral class DZ10.0[2][3]), the single known component of the system, located in the constellation Virgo.
Distance[edit]
Wolf 489, probably, is the 12th closest white dwarf, or, possibly, 9th–14th (see Gliese 293, GJ 1087, Gliese 915, GJ 1276 and Gliese 318). Its trigonometric parallax from YPC (Yale Parallax Catalog) is 121.4 ± 3.4 mas,[5] corresponding to a distance 8.24 ± 0.23 pc, or 26.87 ± 0.75 ly.
| Source | Paper | Parallax, mas | Distance, pc | Distance, ly | Ref. |
|---|---|---|---|---|---|
| Woolley (1970) | Woolley et al., 1970 | 135 ± 12 | 7.4 ± 0.7 | 24.2 ± 2.1 | [6] |
| GJ, 3rd version | Gliese, Jahreiss, 1991 | 122.2 ± 3.9 | 8.18 ± 0.26 | 26.69 ± 0.85 | [7] |
| YPC, 4th edition | van Altena et al., 1995 | 121.4 ± 3.4 | 8.24 ± 0.23 | 26.87 ± 0.75 | [5] |
| Gaia EDR3, 2020 | - | 119.7566±0.0304 | 8.3503±0.0002 | 27.235±0.007 | [4] |
Physical parameters[edit]
Wolf 489's mass is 0.55 ± 0.03 Solar masses,[2] its surface gravity is 107.95 ± 0.02 (8.91 · 107) cm·s−2,[2] or approximately 91 000 of Earth's, corresponding to a radius 9089 km, or 143% of Earth's.
Wolf 489's temperature is 5030 ± 120 K[2] (comparable with that of early K-type main sequence stars); its cooling age, i. e. age as degenerate star (not including lifetime as main sequence star and as giant star) is 5.19 Gyr.[3] Wolf 489 and should appear white with a slight shade of yellow, nealy the same color as a K-type main sequence star.
Notes[edit]
See also[edit]
References[edit]
- ^ a b c d e f g h i j k l m n o p q r s t u "GJ 518 -- White Dwarf". Centre de Données astronomiques de Strasbourg. Retrieved 2011-11-02.
- ^ a b c d e f g h i j k l m Holberg, J. B.; Sion; Oswalt; McCook; Foran; Subasavage (2008). "A New Look at the Local White Dwarf Population". The Astronomical Journal. 135 (4): 1225–1238. Bibcode:2008AJ....135.1225H. doi:10.1088/0004-6256/135/4/1225. S2CID 122855486.
- ^ a b c d e Sion, Edward M.; Holberg; Oswalt; McCook; Wasatonic (2009). "The White Dwarfs within 20 Parsecs of the Sun: Kinematics and Statistics". The Astronomical Journal. 138 (6): 1681–1689. arXiv:0910.1288. Bibcode:2009AJ....138.1681S. doi:10.1088/0004-6256/138/6/1681. S2CID 119284418.
- ^ a b c d Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c d Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
- ^ Stars within 25 pc of the Sun (Woolley+ 1970)
- ^ Nearby Stars, Preliminary 3rd Version (Gliese+ 1991)
