GJ 1151: Difference between revisions

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			{{Starbox begin}}
	]
			{{Starbox image
	<!-- Please do not remove or change this AfD message until the discussion has been closed. -->
			\| image = ]
	<!-- Once discussion is closed, please place on talk page: {{Old AfD multi\|page=GJ 1151\|date=24 June 2018\|result='''keep'''}} -->
			\| caption = Imaginary diagram of GJ 1151 and GJ 1151 b.
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			\| credit = <!--credit for image if the image's use requires them (optional)-->
	'''GJ 1151''' is a ] star of ] M4.5V, located in constellation ] at 26.7 ]s from Earth.{{r\|van Altena1995}}
			}}
			{{Starbox observe
			\| epoch = ]
			\| constell = ]
			\| ra = {{RA\|11\|50\|57.72145}}<ref name=GaiaDR2/>
			\| dec = {{DEC\|+48\|22\|38.5625}}<ref name=GaiaDR2/>
			\| appmag_v = 14.008<ref name=Houdebine2019/>
			}}
			{{Starbox character
			\| type =
			\| class = dM4.5<ref name=Houdebine2019/>
			\| b-v = 1.787<ref name=Mann2015/>
			\| u-b =
			\| variable =
			}}
			{{Starbox astrometry
			\| radial_v = {{Val\|−36.01\|0.28}}<ref name=Jeffers2018/>
			\| prop_mo_ra = −1,545.704<ref name=GaiaDR2/>
			\| prop_mo_dec = −962.816<ref name=GaiaDR2/>
			\| parallax = 124.4074
			\| p_error = 0.1186
			\| parallax_footnote = <ref name=GaiaDR2/>
			\| absmag_v = {{Val\|14.482\|0.022}}<ref name=Houdebine2019/>
			}}
			{{Starbox detail
			\| source =
			\| mass = 0.1540<ref name=Mann2015/>
			\| radius = 0.1903<ref name=Mann2015/>
			\| luminosity =
			\| temperature = {{Val\|3143\|26\|fmt=commas}}<ref name=Houdebine2019/>
			\| gravity =
			\| metal_fe = +0.04<ref name=Houdebine2019/>
			\| rotational_velocity = 2.0<ref name=Jeffers2018/>
			\| age_gyr = 2.5<ref name=Mann2015/>
			}}
			{{Starbox catalog
			\| names = {{odlist \| GJ=1151 \| LHS=316 \| NLTT=28752 \| G=122-49 }}<ref name=SIMBAD/>
			}}
			{{Starbox reference
			\| Simbad = G+122-49
			}}
			{{Starbox end}}

			'''GJ 1151''' is a ] located in the northern ] of ] at a distance of 26.2 ]s from the ]. It has a reddish hue and is too faint to be visible to the naked eye with an ] of 14.0<ref name=Houdebine2019/> The star is moving closer with a ] of −36 km/s,<ref name=Jeffers2018/> and has a relatively large ], traversing the ] at a rate of {{Val\|1.815\|ul=arcsecond}}·yr<sup>−1</sup>.<ref name=Lepine2005/>
	In 2020, astronomers announced the discovery of radio emissions from the star which are consistent with a planet, approximately the size of ], rotating in a 1-5 day long orbit.<ref>{{Cite journal\|last=Vedantham\|first=H. K.\|last2=Callingham\|first2=J. R.\|last3=Shimwell\|first3=T. W.\|last4=Tasse\|first4=C.\|last5=Pope\|first5=B. J. S.\|last6=Bedell\|first6=M.\|last7=Snellen\|first7=I.\|last8=Best\|first8=P.\|last9=Hardcastle\|first9=M. J.\|last10=Haverkorn\|first10=M.\|last11=Mechev\|first11=A.\|date=2020-02-17\|title=Coherent radio emission from a quiescent red dwarf indicative of star–planet interaction\|url=https://www.nature.com/articles/s41550-020-1011-9\|journal=]\|language=en\|pages=1–7\|doi=10.1038/s41550-020-1011-9\|issn=2397-3366}}</ref><ref name="APJ-20200217">{{cite journal \|author=Pope, Benjamin J.S. \|display-authors=et al. \|title=No Massive Companion to the Coherent Radio-emitting M Dwarf GJ 1151 \|url=https://iopscience.iop.org/article/10.3847/2041-8213/ab5b99 \|date=17 February 2020 \|journal=] \|volume=890 \|number=2 \|doi=10.3847/2041-8213/ab5b99 \|accessdate=1 March 2020 }}</ref><ref name="SA-20200229">{{cite news \|last=Starr \|first=Michelle \|title=For The First Time, Astronomers Have Detected an Exoplanet Using Radio Waves \|url=https://www.sciencealert.com/a-new-way-to-search-for-exoplanets-has-yielded-a-distant-earth-sized-world \|date=29 February 2020 \|work=ScienceAlert.com \|accessdate=1 March 2020 }}</ref><ref>{{Cite web\|url=https://www.upi.com/Science_News/2020/02/18/Radio-telescope-measures-aurorae-in-distant-planetary-system/3421582042945/\|title=Radio telescope measures aurorae in distant planetary system\|website=UPI\|language=en\|access-date=2020-02-26}}</ref><ref>{{Cite web\|url=https://www.quantamagazine.org/new-exoplanet-search-strategy-claims-first-discovery-20200218/\|title=New Exoplanet Search Strategy Claims First Discovery\|last=Redd\|first=Nola Taylor\|website=Quanta Magazine\|language=en\|access-date=2020-02-26}}</ref><ref>{{Cite web\|url=https://www.newscientist.com/article/2233972-an-exoplanet-is-generating-radio-waves-from-its-red-dwarf-sun/\|title=An exoplanet is generating radio waves from its red dwarf sun\|last=Clark\|first=Stuart\|website=New Scientist\|language=en-US\|access-date=2020-02-26}}</ref>

			This is a small ] star of ] dM4.5.<ref name=Houdebine2019/> It is 2.5<ref name=Mann2015/> billion years old and is spinning with a ] of 2.0 km/s.<ref name=Jeffers2018/> The star has 15.4%<ref name=Mann2015/> of the ] and 19.0%<ref name=Mann2015/> of the ], with an ] of 3,143 K.<ref name=Houdebine2019/> In 2020, astronomers announced the discovery of radio emissions from the star which are consistent with a planet, approximately the size of ], rotating in a 1-5 day long orbit.<ref name=Vedantham2020/><ref name="APJ-20200217"/><ref name="SA-20200229"/><ref name=SciNews/><ref name=Redd2020/><ref name=Clark/>
	==Distance==
	In 1991, Gliese ''et al'' gave ] (πp) as 121.8 ± 3.0 ].<ref name="Gliese1991">{{cite book\|last1=Gliese\|first1=W.\|last2=Jahreiß\|first2=H.\|title=Preliminary Version of the Third Catalogue of Nearby Stars\|date=1991\|chapter=GI 338\|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-source=V/70A&Name=Gl%20338}}</ref> In 1995, van Altena gave parallax as 122.1 ± 2.9 mas.<ref name="van Altena1995"></ref> In 2014, Dittman ''et al'' gave parallax as 130.60 ± 3.60 mas.{{r\|Dittmann2014}}

	==See also==		==See also==
Line 15:		Line 56:
	==References==		==References==
	{{reflist\|refs=		{{reflist\|refs=

	<ref name="Dittmann2014">{{cite journal\|last1=Dittmann\|first1=Jason A.\|last2=Irwin\|first2=Jonathan M.\|last3=Charbonneau\|first3=David\|last4=Berta-Thompson\|first4=Zachory K.\|title=TRIGONOMETRIC PARALLAXES FOR 1507 NEARBY MID-TO-LATE M DWARFS\|journal=The Astrophysical Journal\|volume=784\|issue=2\|year=2014\|pages=156\|issn=0004-637X\|doi=10.1088/0004-637X/784/2/156\|arxiv=1312.3241\|bibcode=2014ApJ...784..156D}}</ref>
			<ref name=GaiaDR2>{{Cite Gaia DR2\|786834302079285632}}</ref>

			<ref name=SIMBAD>{{cite simbad \| title=G 122-49 \| access-date=2020-03-02}}</ref>

			<ref name=Lepine2005>{{cite journal
			\| last1=Lépine \| first1=Sébastien \| last2=Shara \| first2=Michael M.
			\| title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)
			\| journal=The Astronomical Journal
			\| volume=129 \| issue=3 \| pages=1483–1522 \| date=March 2005
			\| doi=10.1086/427854 \| arxiv=astro-ph/0412070
			\| bibcode=2005AJ....129.1483L }}</ref>

			<ref name=Mann2015>{{cite journal
			\| title=How to Constrain Your M Dwarf: Measuring Effective Temperature, Bolometric Luminosity, Mass, and Radius
			\| display-authors=1 \| last1=Mann \| first1=Andrew W.
			\| last2=Feiden \| first2=Gregory A. \| last3=Gaidos \| first3=Eric
			\| last4=Boyajian \| first4=Tabetha \| last5=von Braun \| first5=Kaspar
			\| journal=The Astrophysical Journal
			\| volume=804 \| issue=1 \| id=64 \| pages=38 \| date=May 2015
			\| arxiv=1501.01635 \| bibcode=2015ApJ...804...64M
			\| doi=10.1088/0004-637X/804/1/64 }}</ref>

			<ref name=Houdebine2019>{{cite journal
			\| title=The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs
			\| last1=Houdebine \| first1=Éric R. \| last2=Mullan \| first2=D. J.
			\| last3=Doyle \| first3=J. G. \| last4=de La Vieuville \| first4=Geoffroy
			\| last5=Butler \| first5=C. J. \| last6=Paletou \| first6=F.
			\| display-authors=1 \| journal=The Astronomical Journal
			\| volume=158 \| issue=2 \| id=56 \| pages=17 \| date=August 2019
			\| arxiv=1905.07921 \| bibcode=2019AJ....158...56H
			\| doi=10.3847/1538-3881/ab23fe }}</ref>

			<ref name=Jeffers2018>{{cite journal
			\| title=CARMENES input catalogue of M dwarfs. III. Rotation and activity from high-resolution spectroscopic observations
			\| last1=Jeffers \| first1=S. V. \| last2=Schöfer \| first2=P.
			\| last3=Lamert \| first3=A. \| last4=Reiners \| first4=A.
			\| last5=Montes \| first5=D. \| last6=Caballero \| first6=J. A.
			\| last7=Cortés-Contreras \| first7=M. \| last8=Marvin \| first8=C. J.
			\| last9=Passegger \| first9=V. M. \| last10=Zechmeister \| first10=M.
			\| last11=Quirrenbach \| first11=A. \| last12=Alonso-Floriano \| first12=F. J.
			\| last13=Amado \| first13=P. J. \| last14=Bauer \| first14=F. F.
			\| last15=Casal \| first15=E. \| last16=Diez Alonso \| first16=E.
			\| last17=Herrero \| first17=E. \| last18=Morales \| first18=J. C.
			\| last19=Mundt \| first19=R. \| last20=Ribas \| first20=I.
			\| last21=Sarmiento \| first21=L. F. \| display-authors=1
			\| journal=Astronomy & Astrophysics
			\| volume=614 \| id=A76 \| pages=19 \| date=June 2018
			\| arxiv=1802.02102 \| bibcode=2018A&A...614A..76J
			\| doi=10.1051/0004-6361/201629599 }}</ref>

			<ref name=Vedantham2020>{{Cite journal
			\| last=Vedantham \| first=H. K. \| last2=Callingham \| first2=J. R.
			\| last3=Shimwell \| first3=T. W. \| last4=Tasse \| first4=C.
			\| last5=Pope \| first5=B. J. S. \| last6=Bedell \| first6=M.
			\| last7=Snellen \| first7=I. \| last8=Best \| first8=P.
			\| last9=Hardcastle \| first9=M. J. \| last10=Haverkorn \| first10=M.
			\| last11=Mechev \| first11=A. \| display-authors=1
			\| title=Coherent radio emission from a quiescent red dwarf indicative of star–planet interaction
			\| url=https://www.nature.com/articles/s41550-020-1011-9
			\| journal=] \| bibcode=2020NatAs.tmp...34V
			\| language=en \| pages=1–7 \| date=2020-02-17
			\| doi=10.1038/s41550-020-1011-9 \| issn=2397-3366 }}</ref>

			<ref name="APJ-20200217">{{cite journal
			\| display-authors=1 \| first1=Benjamin J. S. \| last1=Pope
			\| first2=Megan \| last2=Bedel \| first3=Joseph R. \| last3=Callingham
			\| first4=Harish K. \| last4=Vedantham \| first5=Ignas A. G. \| last5=Snellen
			\| first6=Adrian M. \| last6=Price-Whelan \| first7=Timothy W. \| last7=Shimwell
			\| title=No Massive Companion to the Coherent Radio-emitting M Dwarf GJ 1151
			\| url=https://iopscience.iop.org/article/10.3847/2041-8213/ab5b99
			\| journal=] \| display-authors=1
			\| volume=890 \| number=2 \| date=17 February 2020
			\| bibcode=2020ApJ...890L..19P \| arxiv=2002.07850
			\| doi=10.3847/2041-8213/ab5b99 \| accessdate=1 March 2020 }}</ref>

			<ref name="SA-20200229">{{cite news
			\| last=Starr \| first=Michelle
			\| title=For The First Time, Astronomers Have Detected an Exoplanet Using Radio Waves
			\| url=https://www.sciencealert.com/a-new-way-to-search-for-exoplanets-has-yielded-a-distant-earth-sized-world
			\| date=29 February 2020 \| work=ScienceAlert.com
			\| accessdate=1 March 2020 }}</ref>

			<ref name=SciNews>{{Cite web
			\| url=https://www.upi.com/Science_News/2020/02/18/Radio-telescope-measures-aurorae-in-distant-planetary-system/3421582042945/
			\| title=Radio telescope measures aurorae in distant planetary system
			\| website=UPI \| language=en \| access-date=2020-02-26 }}</ref>

			<ref name=Redd2020>{{Cite web
			\| url=https://www.quantamagazine.org/new-exoplanet-search-strategy-claims-first-discovery-20200218/
			\| title=New Exoplanet Search Strategy Claims First Discovery
			\| last=Redd \| first=Nola Taylor
			\| website=Quanta Magazine\|language=en
			\| access-date=2020-02-26}}</ref>

			<ref name=Clark>{{Cite web
			\| url=https://www.newscientist.com/article/2233972-an-exoplanet-is-generating-radio-waves-from-its-red-dwarf-sun/
			\| title=An exoplanet is generating radio waves from its red dwarf sun
			\| last=Clark\|first=Stuart
			\| website=New Scientist \| language=en-US
			\| access-date=2020-02-26 }}</ref>

	}}		}}

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	{{Stars of Ursa Major}}		{{Stars of Ursa Major}}

	]
	]		]
	]		]
	]		]
			]


	{{star-stub}}

Revision as of 14:59, 13 March 2020

GJ 1151
Observation data Epoch J2000.0 Equinox J2000.0
Imaginary diagram of GJ 1151 and GJ 1151 b.
Constellation	Ursa Major
Right ascension	11 50 57.72145
Declination	+48° 22′ 38.5625″
Apparent magnitude (V)	14.008
Characteristics
Spectral type	dM4.5
B−V color index	1.787
Astrometry

Radial velocity (R_v)	−36.01±0.28 km/s
Proper motion (μ)	RA: −1,545.704 mas/yr Dec.: −962.816 mas/yr
Parallax (π)	124.4074 ± 0.1186 mas
Distance	26.22 ± 0.02 ly (8.038 ± 0.008 pc)
Absolute magnitude (M_V)	14.482±0.022

Details

Mass	0.1540 `M`_☉
Radius	0.1903 `R`_☉
Temperature	3,143±26 K
Metallicity	+0.04 dex
Rotational velocity (v sin i)	2.0 km/s
Age	2.5 Gyr

Other designations
GJ 1151, G 122-49, LHS 316, NLTT 28752
Database references
SIMBAD	data

GJ 1151 is a star located in the northern circumpolar constellation of Ursa Major at a distance of 26.2 light years from the Sun. It has a reddish hue and is too faint to be visible to the naked eye with an apparent visual magnitude of 14.0 The star is moving closer with a radial velocity of −36 km/s, and has a relatively large proper motion, traversing the celestial sphere at a rate of 1.815″·yr.

This is a small red dwarf star of spectral type dM4.5. It is 2.5 billion years old and is spinning with a projected rotational velocity of 2.0 km/s. The star has 15.4% of the mass of the Sun and 19.0% of the Sun's radius, with an effective temperature of 3,143 K. In 2020, astronomers announced the discovery of radio emissions from the star which are consistent with a planet, approximately the size of Earth, rotating in a 1-5 day long orbit.

References

^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ Houdebine, Éric R.; et al. (August 2019). "The Mass-Activity Relationships in M and K Dwarfs. I. Stellar Parameters of Our Sample of M and K Dwarfs". The Astronomical Journal. 158 (2): 17. arXiv:1905.07921. Bibcode:2019AJ....158...56H. doi:10.3847/1538-3881/ab23fe. 56.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ Mann, Andrew W.; et al. (May 2015). "How to Constrain Your M Dwarf: Measuring Effective Temperature, Bolometric Luminosity, Mass, and Radius". The Astrophysical Journal. 804 (1): 38. arXiv:1501.01635. Bibcode:2015ApJ...804...64M. doi:10.1088/0004-637X/804/1/64. 64.
^ Jeffers, S. V.; et al. (June 2018). "CARMENES input catalogue of M dwarfs. III. Rotation and activity from high-resolution spectroscopic observations". Astronomy & Astrophysics. 614: 19. arXiv:1802.02102. Bibcode:2018A&A...614A..76J. doi:10.1051/0004-6361/201629599. A76.
"G 122-49". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-03-02.
Lépine, Sébastien; Shara, Michael M. (March 2005). "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)". The Astronomical Journal. 129 (3): 1483–1522. arXiv:astro-ph/0412070. Bibcode:2005AJ....129.1483L. doi:10.1086/427854.
Vedantham, H. K.; et al. (2020-02-17). "Coherent radio emission from a quiescent red dwarf indicative of star–planet interaction". Nature Astronomy: 1–7. Bibcode:2020NatAs.tmp...34V. doi:10.1038/s41550-020-1011-9. ISSN 2397-3366.{{cite journal}}: CS1 maint: bibcode (link)
Pope, Benjamin J. S.; et al. (17 February 2020). "No Massive Companion to the Coherent Radio-emitting M Dwarf GJ 1151". The Astrophysical Journal Letters. 890 (2). arXiv:2002.07850. Bibcode:2020ApJ...890L..19P. doi:10.3847/2041-8213/ab5b99. Retrieved 1 March 2020.{{cite journal}}: CS1 maint: unflagged free DOI (link)
Starr, Michelle (29 February 2020). "For The First Time, Astronomers Have Detected an Exoplanet Using Radio Waves". ScienceAlert.com. Retrieved 1 March 2020.
"Radio telescope measures aurorae in distant planetary system". UPI. Retrieved 2020-02-26.
Redd, Nola Taylor. "New Exoplanet Search Strategy Claims First Discovery". Quanta Magazine. Retrieved 2020-02-26.
Clark, Stuart. "An exoplanet is generating radio waves from its red dwarf sun". New Scientist. Retrieved 2020-02-26.

Known celestial objects within 20 light-years

Primary member type

Celestial objects by systems. Secondary members are listed in small print.

0–10 ly →

Main-sequence
stars

A-type	Sirius (Alpha Canis Majoris) (8.7094±0.0054 ly) white dwarf B
G-type	Sun (0 ly) rest of Solar System Alpha Centauri α Cen (Rigil Kentaurus) (4.3441±0.0022 ly) K-type main-sequence star B (Toliman) red dwarf C (Proxima Centauri) (4.2465 ± 0.0003 ly) 2 (5?) planets: Ab?; Bc?; Cb, Cc?, Cd
M-type (red dwarfs)	Barnard's Star (5.9629±0.0004 ly) 1 (4?) planets: b, c?, d?, e? Wolf 359 (7.8558±0.0013 ly) 1? planets: b? Lalande 21185 (8.3044±0.0007 ly) 2 (3?) planets: b, d?, c Gliese 65 A (BL Ceti) (8.724±0.012 ly) red dwarf B (UV Ceti) 1? planets: b? Ross 154 (9.7063±0.0009 ly)

Brown dwarfs

L-type	Luhman 16 (6.5029±0.0011 ly) T-type brown dwarf B

Sub-brown dwarfs
and rogue planets

Y-type	WISE 0855−0714 (7.430±0.041 ly)

← 10–15 ly →

Subgiant stars

F-type	Procyon (Alpha Canis Minoris) (11.402±0.032 ly) white dwarf B

Main-sequence
stars

G-type	Tau Ceti (11.9118±0.0074 ly) 4 (8?) planets: (b), (c), (d), e, f, g, h, (i)
K-type	Epsilon Eridani (Ran) (10.4749±0.0037 ly) 1 (2?) planets: b (Ægir), c? 61 Cygni (11.4039±0.0012 ly) K-type main-sequence star B Epsilon Indi (11.8670±0.0041 ly) 2 T-type brown dwarfs: Ba, Bb planet Ab
M-type (red dwarfs)	Ross 248 (10.3057±0.0014 ly) Lacaille 9352 (10.7241±0.0007 ly) 2 (3?) planets: b, c, d? Ross 128 (11.0074±0.0011 ly) planet b EZ Aquarii (11.109±0.034 ly) 2 red dwarfs: B, C Struve 2398 (11.4908±0.0009 ly) red dwarf B 1 (3?) planets: Ab, Bb?, Bc? Groombridge 34 (11.6191±0.0008 ly) red dwarf B 2 planets: Ab, Ac DX Cancri (11.6797±0.0027 ly) GJ 1061 (11.9839±0.0014 ly) 3 planets: b, c, d YZ Ceti (12.1222±0.0015 ly) 3 planets: b, c, d Luyten's Star (12.3485±0.0019 ly) 2 (4?) planets: b, c, d?, e? Teegarden's Star (12.4970±0.0045 ly) 3 planets: b, c, d Kapteyn's Star (12.8308±0.0008 ly) Lacaille 8760 (12.9472±0.0018 ly) SCR 1845−6357 (13.0638±0.0070 ly) T-type brown dwarf B Kruger 60 (13.0724±0.0052 ly) red dwarf B DENIS J1048−3956 (13.1932±0.0027 ly) Ross 614 (13.363±0.040 ly) red dwarf B Wolf 1061 (14.0500±0.0016 ly) 3 planets: b, c, d Gliese 1 (14.1747±0.0022 ly) TZ Arietis (14.5780±0.0046 ly) planet b Wolf 424 (14.595±0.031 ly) red dwarf B Gliese 687 (14.8395±0.0014 ly) 2 planets: b, c Gliese 674 (14.8492±0.0018 ly) planet b LHS 292 (14.8706±0.0041 ly)

Degenerate
stars

White dwarfs	van Maanen 2 (14.0718±0.0011 ly)

Brown dwarfs

T-type	UGPS J0722-0540 (13.43±0.13 ly)

← 15–20 ly

Subgiant stars

G-type	Delta Pavonis (19.893±0.015 ly)

Main-sequence
stars

A-type	Altair (Alpha Aquilae) (16.730±0.049 ly)
G-type	Alsafi (Sigma Draconis) (18.7993±0.0081 ly) Achird (Eta Cassiopeiae) (19.3314±0.0025 ly) K-type main-sequence star B e (82 G.) Eridani (19.7045±0.0093 ly) 3 planets: b, c, d
K-type	Groombridge 1618 (15.8857±0.0017 ly) Omicron (40) Eridani (16.3330±0.0042 ly) white dwarf B red dwarf C 70 Ophiuchi (16.7074±0.0087 ly) K-type main-sequence star B Gliese 570 (19.1987±0.0074 ly) 2 red dwarfs: B, C T-type brown dwarf D 36 Ophiuchi (19.4185±0.0036 ly) 2 K-type main-sequence stars: B, C HR 7703 (19.609±0.013 ly) red dwarf B
M-type (red dwarfs)	GJ 1245 (15.2001±0.0034 ly) 2 red dwarfs: B, C Gliese 876 (15.2382±0.0025 ly) 4 planets: d, c, b, e LHS 288 (15.7586±0.0034 ly) GJ 1002 (15.8060±0.0036 ly) 2 planets: b, c Gliese 412 (15.9969±0.0026 ly) red dwarf B AD Leonis (16.1939±0.0024 ly) Gliese 832 (16.2005±0.0019 ly) planet b Gliese 682 (16.3328±0.0026 ly) 2? planets: b?, c? EV Lacertae (16.4761±0.0018 ly) G 9-38 (16.800±0.011 ly) red dwarf B GJ 3379 (16.9861±0.0027 ly) Gliese 445 (17.1368±0.0017 ly) 2M1540 (17.3738±0.0046 ly) GJ 3323 (17.5309±0.0026 ly) 2 planets: b, c Gliese 526 (17.7263±0.0024 ly) Stein 2051 (17.9925±0.0020 ly) white dwarf B Gliese 251 (18.2146±0.0028 ly) planet b LP 816-60 (18.3305±0.0038 ly) LSR J1835+3259 (18.5534±0.0049 ly) Gliese 205 (18.6042±0.0022 ly) Gliese 229 (18.7906±0.0018 ly) 2 T-type brown dwarfs: Ba, Bb 2 planets: Ab, Ac Ross 47 (18.8883±0.0031 ly) Gliese 693 (19.2078±0.0053 ly) Gliese 754 (19.2724±0.0067 ly) Gliese 908 (19.2745±0.0032 ly) Gliese 752 (19.2922±0.0027 ly) red dwarf B (vB 10) planet Ab Gliese 588 (19.2996±0.0031 ly) YZ Canis Minoris (19.5330±0.0040 ly) GJ 1005 (19.577±0.035 ly) red dwarf B Gliese 268 (19.7414±0.0076 ly) red dwarf B

Degenerate
stars

White dwarfs	Gliese 440 (15.1226±0.0013 ly)

Brown dwarfs

L-type	DENIS 0255−4700 (15.877±0.014 ly)
T-type	WISE 1741+2553 (15.22±0.20 ly) WISE 1506+7027 (16.856±0.052 ly) DENIS 0817-6155 (17.002±0.037 ly) 2MASS 0939-2448 (17.41±0.44 ly) T-type brown dwarf B 2MASS 1114-2618 (18.20±0.14 ly) 2MASS 0415-0935 (18.62±0.18 ly) SIMP0136 (19.955±0.057 ly) 2MASS 0937+2931 (19.96 _−0.21 ly)
Y-type	WISE 1639−6847 (15.450±0.041 ly) WISE 0350−5658 (18.49±0.24 ly)

Sub-brown dwarfs
and rogue planets

Y-type	WISE 1541−2250 (19.54±0.24 ly)

Italic are systems without known trigonometric parallax.

Constellation of Ursa Major

Stars

Bayer	α (Dubhe) β (Merak) γ (Phecda) δ (Megrez) ε (Alioth) ζ (Mizar) η (Alkaid) θ ι (Talitha) κ (Alkaphrah) λ (Tania Borealis) μ (Tania Australis) ν (Alula Borealis) ξ (Alula Australis) ο (Muscida) π π ρ σ σ τ υ φ χ (Taiyangshou) ψ ω
Flamsteed	2 (A) 5 (b) 6 15 (f) 16 (c) 17 18 (e) 19 20 21 22 23 (h) 24 (d) 26 27 28 31 32 35 36 37 38 39 40 41 42 43 44 46 47 (Chalawan) 49 51 55 56 57 58 59 60 61 62 65 66 67 68 70 71 72 73 74 75 76 78 80 (Alcor) 81 82 83 84 86 55 Cam 56 Cam 57 Cam 1 CVn 14 LMi 15 LMi 25 LMi 47 LMi 37 Lyn 39 Lyn 41 Lyn (Intercrus)
Variable	R T U W Z RV ST SU SW SX TU TX TY UX UY VV VX VY XY ZZ AA AB AE AN AR AW BC BE BM BZ CG CH CO CQ CY DH DI DM DV DW EE EG EI EK EN EP ER ET EU EV EZ IY KS
HR	3922 4067 4098 4132 4867 5148
HD	68988 (Násti) 74389 80606 80607 84406 98618 99706 118203 (Liesma) 233731
Other	ADS 7251 Feige 55 G 196-3 Gliese 338 Gliese 412 Gliese 414 GJ 3512 Groombridge 1618 Groombridge 1830 HAT-P-3 (Dombay) HAT-P-13 HAT-P-21 (Mazaalai) HIP 57050 HIP 57274 1SWASP J093010.78+533859.5 KELT-24 Lalande 21185 M82 X-1 M82 X-2 Qatar-8 Sidus Ludoviciana SN H0pe UGC 5497 US 708 Winnecke 4 WISE 1405+5534 XTE J1118+480

Exoplanets	47 Ursae Majoris b (Taphao Thong) c (Taphao Kaew) d ο Ursae Majoris b 41 Lyncis b (Arkas) Gliese 414 Ab c HAT-P-3b (Teberda) HD 80606 b HD 89744 b KELT-24b

Nebulae	Owl Nebula

Galaxies

Messier	81 (Bode's Galaxy) 82 (Cigar Galaxy) 101 (Pinwheel Galaxy) 108 109
NGC	2603 2606 2681 2685 2688 2768 2787 2800 2805 2814 2841 2857 2950 2959 2976 2985 2998 3005 3006 3008 3009 3073 3077 3079 3184 3191 3198 3206 3259 3310 3319 3353 3359 3435 3445 3448 3516 3539 3545B 3550 3552 3553 3554 3358 3561 3583 3610 3613 3619 3631 3642 3656 3665 3669 3675 3690 3718 3726 3729 3738 3741 3786 3794 3877 3893 3898 3921 3928 3938 3941 3945 3949 3953 3972 3982 3985 3994 3995 3998 4013 4026 4036 4041 4051 4088 4096 4100 4102 4144 4157 4194 4500 4605 5001 5164 5201 5204 5256 5278 5279 5308 5322 5422 5473 5474 5477 5486 5502 5585
Other	2MASX J10222849+5006200 3C 219 3C 244.1 3C 268.3 CEERS-2112 Haro 2 Holmberg IX I Zwicky 18 IC 923 IC 2574 IRAS F11119+3257 Markarian 231 Markarian 273 Markarian 421 Mayall's Object SBS 0953+549 SDSS J1148+5251 UGC 4879 UGC 5101 UGC 6945 UGC 8335 UGC 8508 Ursa Major III

Astronomical events	SN 1999by

Revision as of 14:59, 13 March 2020

See also

References