HD 170873

HD 170873
Location of HD 170873 (circled)
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Telescopium
Right ascension 18h 34m 31.11856s[1]
Declination −52° 53′ 29.4756″[1]
Apparent magnitude (V) 6.20±0.01[2]
Characteristics
Spectral type K2 III[3]
B−V color index +1.27[4]
Astrometry
Radial velocity (Rv)23.8±0.4[5] km/s
Proper motion (μ) RA: −16.944 mas/yr[1]
Dec.: −42.325 mas/yr[1]
Parallax (π)5.9179 ± 0.0283 mas[1]
Distance551 ± 3 ly
(169.0 ± 0.8 pc)
Absolute magnitude (MV)−0.31[6]
Details
Mass3.20±0.04[1] M☉
Radius22.6±1.2[7] R☉
Luminosity170±2[1] L☉
Surface gravity (log g)1.86[8] cgs
Temperature4,473±122[9] K
Metallicity [Fe/H]−0.01[8] dex
Rotational velocity (v sin i)<1[10] km/s
Age318+30
−31[1] Myr
Other designations
19 G. Telescopii[11], CD−52°8714, CPD−52°11158, GC 25324, HD 170873, HIP 91062, HR 6954, SAO 245559[12]
Database references
SIMBADdata

HD 170873, also known as HR 6954 or rarely 19 G. Telescopii, is a solitary orange-hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.20,[2] placing it near the limit for naked eye visibility. Gaia DR3 parallax measurements imply a distance of 551 light years[1] and it is currently receding with a heliocentric radial velocity of 23.8 km/s.[5] At its current distance, HD 170873's brightness is diminished by 0.39 magnitudes due to interstellar dust,[13] and it has an absolute magnitude of −0.31.[6]

HD 170873 is an evolved red giant with a stellar classification of K2 III.[3] It has 3.2 times the mass of the Sun but at the age of 318 million years,[1] it has expanded to 22.6 times the Sun's radius.[7] It radiates 170 times the luminosity of the Sun[1] from its enlarged photosphere at an effective temperature of 4,473 K.[9] It has a near-solar metallicity at [Fe/H] = −0.01[8] and spins too slowly for its projected rotational velocity to be measured accurately.[10]

References

  1. ^ a b c d e f g h i j 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.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 – L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
  3. ^ a b Houk, Nancy (1978). Michigan catalogue of two-dimensional spectral types for the HD stars: Declinations −53° to −40°. Vol. 2. Bibcode:1978mcts.book.....H.
  4. ^ Corben, P. M. (April 1971). "Photoelectric Magnitudes and Colours for Bright Southern Stars". Monthly Notes of the Astronomical Society of South Africa. 30 (4): 37. Bibcode:1971MNSSA..30...37C. ISSN 0024-8266.
  5. ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
  6. ^ a b Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
  7. ^ a b Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants. Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.
  8. ^ a b c Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361. S2CID 131780028.
  9. ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881. hdl:1721.1/124721. S2CID 166227927.
  10. ^ a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars V: Southern stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361. S2CID 54046583.
  11. ^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
  12. ^ "HD 170873". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved March 2, 2023.
  13. ^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.

Read other articles:

Filsafat India

FilsafatPlato, Kant, Nietzsche, Buddha, Kong Hu Cu, Ibnu SinaPlatoKantNietzscheBuddhaKong Hu CuIbnu Sina Cabang Epistemologi Estetika Etika Hukum Logika Metafisika Politik Sosial Tradisi Afrika Analitis Aristoteles Barat Buddha Eksistensialisme Hindu Islam Jainisme Kontinental Kristen Plato Pragmatisme Timur Tiongkok Yahudi Zaman Klasik Pertengahan Modern Kontemporer Kepustakaan Epistemologi Estetika Etika Filsafat politik Logika Metafisika Filsuf Epistemologi Estetika Etika Filsuf politik da...

 

Eparki Sourozh

Untuk kota Sourozh (kini Sudak) di Krimea, lihat Sourozh. Eparki SourozhOrtodoks Plakat Gereja Patriarkial Ortodoks Rusia Kenaikan dan Seluruh Orang KudusLokasiWilayahBritania RayaIrlandiaProvinsi gerejawiEksarkat Patriarkhal di Eropa Barat (Patriarkat Moskwa)MetropolitAntonius (Sevryuk)InformasiDenominasiGereja Ortodoks TimurPendirian10 Oktober 1962Kepemimpinan kiniGereja indukRussian Orthodox ChurchUskup SourozhMatthew (Andreev) [ru]Situs webhttp://www.sourozh.org/Eparki S...

 

Barding

Seorang kesatria abad keenam belas menunggangi seekor kuda berbusana barding lengkap Barding (juga disebut bard atau barb) adalah zirah tubuh untuk kuda-kuda perang, yang secara khusus dipakai oleh para kesatria Eropa. Pada akhir Abad Pertengahan, karena perlindungan zirah untuk kesatria menjadi lebih efektif, tunggangan mereka menjadi target. Peristiwa tersebut dialami oleh bangsa Skotlandia di Pertempuran Bannockburn pada abad ke-14, saat kuda-kuda dibunuh oleh infanteri, dan bangsa Inggris...

Calhoun County, Illinois

Calhoun County, IllinoisLokasi di negara bagian IllinoisLokasi negara bagian Illinois di Amerika SerikatDidirikan1825SeatHardinKota terbesarHardinWilayah • Keseluruhan284 sq mi (735 km2) • Daratan254 sq mi (657 km2) • Perairan30 sq mi (77 km2), 10.53%Populasi • (2000)5.084 • Kepadatan20/sq mi (8/km²)Zona waktuTengah: UTC-6 (CST) / -5 (CDT) Calhoun County adalah county yang terletak d...

 

Piala Dunia Futsal FIFA 2021

Piala Dunia Futsal FIFA 2021(Lituavi) Pasaulio Salės Futbolo Čempionatas Lithuania 2021Informasi turnamenTuan rumah LituaniaJadwalpenyelenggaraan12 September s.d. 3 Oktober 2021Jumlahtim peserta24 (dari 6 konfederasi)Tempatpenyelenggaraan3 (di 3 kota)Hasil turnamenJuara Portugal (gelar ke-1)Tempat kedua ArgentinaTempat ketiga BrasilTempat keempat KazakhstanStatistik turnamenJumlahpertandingan52Jumlah gol301 (5,79 per pertandingan)Jumlahpenonton63.748&...

 

SMA Negeri 2 Tasikmalaya

SMA Negeri 2 TasikmalayaSekolah Menengah Atas Negeri 2 TasikmalayaInformasiDidirikan1967JenisNegeriAkreditasiA (Amat Baik) [1]Kepala SekolahDra. Hj. Elin Darliah, S.ST., M.Pd.Jumlah kelas12 kelas setiap tingkatJurusan atau peminatanIPA, dan IPSRentang kelasX (IPA, IPS); XI (IPA, IPS); XII (IPA, IPS)KurikulumKurikulum 2013Jumlah siswa1200+StatusISO 9001-2008[2]AlamatLokasiJl.R.E. Martadinata 261, Tasikmalaya, Jawa Barat, IndonesiaTel./Faks.+62 265 331331Koordinat...

Oak

Tree or shrub in the genus Quercus Oak tree and Quercus redirect here. For other uses, see Oak (disambiguation), Oak Tree (disambiguation), and Quercus (disambiguation). OakTemporal range: Paleocene - Eocene boundary – recent 56–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N possible Paleocene & Late Cretaceous records Foliage and acorns of Quercus robur Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Rosids Order: Fagales Family: F...

 

Ярусный лов

Рыболовный ярус в собранном виде Я́русный лов — метод промышленного рыболовства, при котором для лова рыбы используются крючки с наживкой, прикреплённые к крючковому орудию лова — пелагическому или донному ярусу. Таким способом чаще всего ловят меч-рыбу, тунца, па...

 

Ru Rendang

Political subdivision in Malaysia This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: Ru Rendang – news · newspapers · books · scholar · JSTOR (April 2020) Ru Rendang Terengganu constituencyState constituencyLegislatureTerengganu State Legislative AssemblyMLA    Ahmad Samsuri MokhtarPNCo...

Death of Abu Bakr al-Baghdadi

2019 U.S. military operation in Syria Death of Abu Bakr al-Baghdadi (Operation Kayla Mueller)Part of the Syrian civil war, the American-led intervention in the Syrian civil war (Operation Inherent Resolve), the international military intervention against the Islamic State, and the Global War on TerrorismBaghdadi's compound, before and after the U.S. special operations raid, 26–27 October 2019Date26–27 October 2019 (1 day)Location300 meters outside Barisha,[1] Harem District, Idlib...

 

Jan Ø. Jørgensen

Jan Ø. JørgensenInformasi pribadiKebangsaanDenmarkLahir31 Desember 1987 (umur 36)[1]Aalborg, DenmarkTinggi1,85 m (6 ft 1 in)PeganganKananTunggal putraPeringkat tertinggi2 (Januari 2016)Peringkat saat ini5 (maret 2016[2])Profil di BWF Jan Østergaard Jørgensen[3] (lahir 31 Desember 1987) adalah pemain bulu tangkis pria asal Denmark. Ia bermain di Liga Bulutangkis Denmark mewakili SIF (Skovshoved). Referensi ^ Jan Ø Jørgensen Profile. B...

 

Sada Thompson

Sada ThompsonBiographieNaissance 27 septembre 1927Des MoinesDécès 4 mai 2011 (à 83 ans)DanburyNationalité américaineFormation Université Carnegie-MellonScotch Plains-Fanwood High School (en)Activités ActricePériode d'activité à partir de 1955Conjoint Donald StewartAutres informationsDistinctions Tony Award de la meilleure actrice dans une pièce (1972)Primetime Emmy Award de la meilleure actrice dans une série télévisée dramatique (1978)modifier - modifier le code - modifie...

Augustin-Louis Cauchy

French mathematician (1789–1857) Cauchy redirects here. For other uses, see Cauchy (disambiguation). Augustin-Louis CauchyCauchy around 1840. Lithography by Zéphirin Belliard after a painting by Jean Roller.Born(1789-08-21)21 August 1789Paris, FranceDied23 May 1857(1857-05-23) (aged 67)Sceaux, FranceNationalityFrenchAlma materÉcole Nationale des Ponts et ChausséesKnown forMechanical engineering Mathematical analysisGradient descentImplicit function theoremIntermediate valu...

 

Ikan kiper

Ikan kiper Status konservasi Risiko Rendah  (IUCN 3.1)[1] Klasifikasi ilmiah Domain: Eukaryota Kerajaan: Animalia Filum: Chordata Kelas: Actinopterygii Ordo: Perciformes Famili: Scatophagidae Genus: Scatophagus Spesies: Scatophagus argusL., 1766 Sinonim[2] Ephippus argus (Linnaeus, 1766) Chaetodon pairatalis Hamilton, 1822 Chaetodon atromaculatus Bennett, 1830 Scatophagus bougainvillii Cuvier, 1831 Scatophagus ornatus Cuvier, 1831 Scatophagus purpurascens Cuvier, 1831 Sa...

 

PFC CSKAモスクワ

PFC CSKAモスクワ原語表記 Профессиональный футбольный клуб ЦСКА愛称 кони (馬)、красно-синие (赤青)、армейцы(軍人)クラブカラー 青と赤創設年 1911年所属リーグ ロシア・プレミアリーグ所属ディビジョン 1部ホームタウン モスクワホームスタジアム アレナCSKA収容人数 30,457代表者 エフゲニ・ギネル[1][2]監督 アレクセイ・ベレズツキー�...

Kerala Sahitya Akademi Fellowship

Not to be confused with Sahitya Akademi Fellowship. AwardKerala Sahitya Akademi FellowshipCountryIndiaPresented byKerala Sahitya AkademiFirst awarded1970Websitekeralasahityaakademi.org Kerala Sahitya Akademi Fellowship is an honour of the Kerala Sahitya Akademi (Kerala Literary Academy), given to writers of Malayalam literature by inducting them as the distinguished members of the Akademi.[1] Year Name Image Ref. 1970 K. P. Kesava Menon [1] G. Sankara Kurup 1971 Puthezhath Ra...

 

Loglan

Constructed languageNot to be confused with Lojban.This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: Loglan – news · newspapers · books · scholar · JSTOR (March 2013) (Learn how and when to remove this m...

 

Ipu (Ceará)

Questa voce sull'argomento centri abitati del Ceará è solo un abbozzo. Contribuisci a migliorarla secondo le convenzioni di Wikipedia. Ipucomune Ipu – Veduta LocalizzazioneStato Brasile Stato federato Ceará MesoregioneNoroeste Cearense MicroregioneIpu AmministrazioneSindacoCarlos Sergio Rufino Moreira TerritorioCoordinate4°19′27″S 40°42′40″W4°19′27″S, 40°42′40″W (Ipu) Altitudine270 m s.l.m. Superficie629,315 km² Abitanti40 296[1&#...

The World EP.2: Outlaw

The World EP.2: OutlawSampul digitalAlbum mini karya AteezDirilis16 Juni 2023 (2023-06-16)GenreK-popDurasi19:30BahasaKoreaLabel KQ RCA Legacy Kronologi Ateez The World EP. Paradigm(2022) The World EP.2: Outlaw(2023) The World EP.Fin: Will(2023) Singel dalam album The World EP.2: Outlaw Bouncy (K-Hot Chilli Peppers)Dirilis: 16 Juni 2023 The World EP.2: Outlaw adalah album mini kesebelas dari grup vokal pria Korea Selatan Ateez. Album ini dirilis pada tanggal 16 Juni 2023, melalui KQ E...

 

Middleton (Cumbria)

Cet article est une ébauche concernant une localité anglaise. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Pour les articles homonymes, voir Middleton. MiddletonGéographiePays  Royaume-UniNation constitutive AngleterreRégion Angleterre du Nord-OuestComté cérémonial CumbriaDistrict non métropolitain South LakelandCoordonnées 54° 16′ 07″ N, 2° 34′ 46″ ODémo...