C.D.S. - SIMBAD4 rel 1.8 - 2024.04.20CEST04:50:50 Mel20 ----- Object Cl Melotte 20 --- OpC --- OID=@151300 (@@145015,1) --- coobox=2757 Coordinates(ICRS,ep=J2000,eq=2000): 03 26 28.1 +48 58 30 (Opt ) D [~ ~ ] 2021A&A...647A..19T Coordinates(FK4,ep=B1950,eq=1950): 03 22 54.6 +48 48 03 Coordinates(Gal,ep=J2000,eq=2000): 147.3566 -06.4040 hierarchy counts: #parents=0, #children=5062, #siblings=0 Proper motions: 22.929 -25.556 [0.071 0.095 90] B 2018A&A...616A..10G Parallax: 5.718 [0.005] B 2018A&A...616A..10G Radial Velocity: 0.72 [0.16] A 2021A&A...647A..19T Redshift: 0.000002 [0.000001] A 2021A&A...647A..19T cz: 0.72 [0.16] A 2021A&A...647A..19T Flux Spectral type: ~ ~ ~ Morphological type: ~ ~ ~ Angular size: 243.2 243.2 0 (Opt ) D 2020A&A...633A..99C Identifiers (10): [KC2019] Theia 133 C 0318+484 OCl 392.0 [KPR2004b] 42 Cl Melotte 20 [KPS2012] MWSC 0274 Cl Collinder 39 NAME Alpha Per Cluster NAME Alpha Persei Cluster NAME alf Per Cluster Bibcodes 1850-2024 () (861): 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1998ApJ...501..624G 1998ApJ...504..170P 1998CoSka..27..309H 1998IBVS.4600....1S 1998LAstr.112...74H 1998MNRAS.299..904B 1998MNRAS.300..733M 1998PASP..110..804Z 1998Sci...282.1309R 1997A&A...317..448G 1997A&A...318..805M 1997A&A...322..116V 1997A&A...323...86R 1997A&A...323..901H 1997A&A...324..943S 1997A&A...325..167R 1997A&AS..121..213P 1997A&AS..123...83J 1997AJ....114..699C 1997AN....318..335E 1997ARA&A..35..557P 1997ARep...41...28B 1997JAF....55Q..46A 1997JAF....55Q..51H 1997MNRAS.284..874O 1997MNRAS.286L..17M 1997MNRAS.287..350J 1997MmSAI..68..833J 1997MmSAI..68..845S 1997MmSAI..68..853M 1997MmSAI..68..865M 1997MmSAI..68..881B 1997MmSAI..68..895M 1997MmSAI..68..899A 1997MmSAI..68..905M 1997MmSAI..68..971R 1997MmSAI..68..989M 1997Obs...117..218C 1997PASP..109..759W 1997PAZh...23..667M 1997SSRv...81..201V 1997Sci...277...67K 1996A&A...305..498A 1996A&A...305..519Z 1996A&A...305..785R 1996A&A...314..173A 1996A&AS..119..271F 1996A&AS..120..127B 1996AJ....111..424G 1996AJ....112.1570P 1996AJ....112.1595E 1996ApJ...462..746B 1996ApJ...463..593R 1996ApJ...463..707G 1996ApJ...471..847P 1996BAAS...28.1366P 1996BaltA...5..445P 1996MNRAS.281.1001J 1996PASP..108..738D 1995A&A...293...69E 1995A&A...294..469K 1995A&A...294..509S 1995A&AS..109..375A 1995AJ....109.2193S 1995AJ....110..823E 1995AN....316..401K 1995AZh....72..495O 1995ApJ...445..231T 1995ApJ...452..652A 1995IBVS.4162....1P 1995IrAJ...22..181R 1995PASP..107....1T 1995PASP..107..211P 1994A&A...288..475P 1994A&A...288..860C 1994A&A...292..439P 1994A&AS..104..379B 1994AJ....107.1422P 1994AJ....108..694F 1994AcApS..14..188W 1994Ap&SS.218....1M 1994BAAS...26.1488C 1994BaltA...3..348D 1994JRASC..88..303T 1994MNRAS.267..918R 1994MNRAS.268..181O 1994MNRAS.269.1099C 1994MNRAS.271..476J 1994PASAu..11..194L 1994PPMtO..13...65W 1993A&AS..100..311T 1993AJ....105.1967S 1993AJ....105.2299S 1993AJ....106..229S 1993AJ....106.1059S 1993ApJ...409..624S 1993BAAS...25..882S 1993BAAS...25..883Y 1993BSAO...36...52T 1993IBVS.3917....1S 1993MNRAS.262..521O 1993PASP..105..269P 1992A&AS...93..271S 1992AJ....103..488P 1992AZh....69.1188K 1992ApJ...389L..83R 1992ApJ...393..666M 1992ApJ...395..654S 1992BAAS...24..773S 1992BAAS...24..774V 1992ChA&A..16...24P 1992JApA...13...61M 1992MNRAS.256..269T 1992MNRAS.258..360C 1992PASP..104.1039H 1991A&A...241...69A 1991A&A...245..150Z 1991A&A...247...35S 1991AJ....102..333S 1991AN....312..177S 1991ApJ...370L..95B 1991MmSAI..62...43S 1991MmSAI..62..187G 1991MmSAI..62..939S 1990A&A...236...95G 1990A&A...239..205A 1990Ap&SS.164..107R 1990ApJ...359L..51S 1990BAAS...22.1330P 1990BICDS..38..151R 1990MmSAI..61..613C 1990PASP..102...96P 1990PAZh...16..435K 1990PAZh...16..619K 1990RMxAA..21..202B 1989A&A...209...51K 1989A&A...220..128V 1989A&AS...81...47T 1989AISof...5...67P 1989AN....310..367S 1989AZh....66...12P 1989Afz....31...37E 1989Ap&SS.151...47T 1989Ap&SS.157...47R 1989ApJ...336..798B 1989ApJ...342..823S 1989ApJ...346..160S 1989ApJ...347..231G 1989S&T....77..140M 1988A&A...199..146N 1988A&AS...76..127R 1988AJ.....95.1895R 1988AZh....65..330E 1988AZh....65..730E 1988AcA....38..225N 1988Afz....29..479L 1988ApJ...327..389B 1988ApJ...333..236K 1988ApJ...333..267B 1988ApJ...335..197V 1988BAAS...20..963F 1988BAAS...20..989S 1988JApA....9..107R 1988KFNT....4a..64B 1988MitVS..11...92G 1987A&AS...71..441M 1987ARA&A..25..271H 1987AZh....64..956B 1987AZh....64..965E 1987BAAS...19..702B 1987BAAS...19.1128B 1987MNRAS.226..123M 1987PASP...99..471S 1987PASP...99.1089G 1987PAZh...13...56K 1987RMxAA..14..414L 1987RMxAA..14..420P 1986AJ.....92..367F 1986BICDS..31..175M 1985ApJ...289..247S 1984AISAO..18...64P 1984ApJ...276..266A 1983BASI...11...44S 1983MNRAS.204..391E 1982ApJS...49..425J 1981A&A...104..185N 1981A&AS...44..467M 1980AJ.....85...66F 1980IAUS...85..129M 1979AJ.....84..356C 1979AJ.....84.1858C 1978A&A....66..225P 1978PASP...90..692A 1977A&A....61...27P 1977BICDS..12....2M 1974AJ.....79..687C 1974AJ.....79.1280T 1973IAUS...54...93C 1971A&A....10..354M 1971A&AS....4..241B 1971AJ.....76..242M 1971PZ.....18..218S 1970PDDO....4....1H 1970VA.....12..367E 1969PDAO...13..329P 1963ZA.....57..117B 1960ApJ...132...68M 1959MiWie..10..129H 1958Obs....78...76E 1956AN....283..109H 1950ApJ...111..426R Measures (distance:7 Fe_H:9 PLX:8 PM:10 velocities:10 ): distance:7Fe_H:9PLX:8PM:10velocities:10 Notes (0) : ================================================================================