C.D.S. - SIMBAD4 rel 1.8 - 2024.04.19CEST08:23:11 EQ J195936+204814 ----------------- Object PSR J1959+2048 --- Psr --- OID=@15059846 (@@-1,255) --- coobox=20258 Coordinates(ICRS,ep=J2000,eq=2000): 19 59 36.7643141520 +20 48 14.896407996 (Opt ) A [0.6353 0.7032 90] 2020yCat.1350....0G Coordinates(FK4,ep=B1950,eq=1950): 19 57 25.0391949060 +20 40 00.756655463 Coordinates(Gal,ep=J2000,eq=2000): 059.1968896728793 -04.6974899421032 hierarchy counts: #parents=0, #children=0, #siblings=0 Proper motions: -19.267 -26.560 [1.235 1.244 90] A 2020yCat.1350....0G Parallax: 1.1878 [1.3556] A 2020yCat.1350....0G Radial Velocity: ~ [~ ~ ] ~ ~ Redshift: ~ [~ ~ ] ~ ~ cz: ~ [~ ~ ] ~ ~ Flux B : 21.08 [0.05] D 2007MNRAS.379.1117R Flux V : 20.16 [0.05] D 2007MNRAS.379.1117R Flux G : 20.172272 [0.024249] C 2020yCat.1350....0G Flux R : 19.53 [0.05] D 2007MNRAS.379.1117R Flux I : 18.79 [0.05] D 2007MNRAS.379.1117R Flux K : 17.8 [0.1] D 2007MNRAS.379.1117R Spectral type: G: E 1992ApJ...400..638A Morphological type: ~ ~ ~ Angular size: ~ ~ ~ (~) ~ ~ Identifiers (12): 4FGL J1959.5+2048 3FGL J1959.5+2047 1FGL J1959.6+2047 2FGL J1959.5+2047 V* QX Sge PSR B1957+20 PSR J1959+2048 NAME Black Widow Gaia DR3 1823773960079216896 Gaia DR2 1823773960079216896 EQ J195936+204814 NAME PSR B1957+20 b Bibcodes 1850-2024 () (807): 2024A&A...682A.103G 2024ApJ...961...48W 2024ApJ...961..155K 2024ApJ...962...56L 2024ApJ...963L..46L 2024ApJ...964....6W 2024MNRAS.527.4563K 2023A&A...670A.173L 2023A&A...679A..17P 2023ApJ...942....6K 2023ApJ...942...87K 2023ApJ...943..103A 2023ApJ...944..191T 2023ApJ...949...50R 2023ApJ...951L..10A 2023ApJ...951L..37L 2023ApJ...952..150P 2023ApJ...955...21Y 2023ApJ...955...33M 2023ApJ...955...36W 2023ApJ...958..191S 2023ApJS..268...61Z 2023MNRAS.519..121L 2023MNRAS.520.2217M 2023MNRAS.520.2995F 2023MNRAS.521.2504O 2023MNRAS.523.4405N 2023MNRAS.525.2107J 2023MNRAS.525.2565T 2023MNRAS.526.2645S 2023NatAs...7..451C 2023RAA....23j5005M 2023RAA....23l5024D 2022A&A...658A.143B 2022A&A...661A..57V 2022A&A...663A..75W 2022A&A...663A.116W 2022ApJ...930..101R 2022ApJ...933..140C 2022ApJ...934...65K 2022ApJ...935....2C 2022ApJ...936...63S 2022ApJ...941...76V 2022ApJ...941..130D 2022ApJ...941..199S 2022ApJS..260...53A 2022MNRAS.509.3172M 2022MNRAS.510..515V 2022MNRAS.510.4573B 2022MNRAS.510.5908M 2022MNRAS.512.3001K 2022MNRAS.513...71S 2022MNRAS.513.1794B 2022MNRAS.514.1054G 2022MNRAS.514.4069J 2022MNRAS.514.4385S 2022MNRAS.515.2725G 2022MNRAS.516.2792D 2022Natur.605...41B 2022Sci...376..521F 2021A&A...649A.120M 2021ApJ...908..105F 2021ApJ...908L..46R 2021ApJ...911...92L 2021ApJ...912..124B 2021ApJ...913...67W 2021ApJ...916..100R 2021ApJ...917L..13K 2021ApJ...918L..26W 2021ApJ...920...58K 2021ApJ...921..120Y 2021ApJ...922..158L 2021ApJ...922L..13W 2021ApJS..255....5A 2021ApJS..256...12A 2021MNRAS.500..211G 2021MNRAS.500.1592G 2021MNRAS.500.4365A 2021MNRAS.501.1116A 2021MNRAS.502..390H 2021MNRAS.504..166H 2021MNRAS.505.2870O 2021MNRAS.505.3041P 2021MNRAS.505.4468G 2021MNRAS.505.5853G 2021MNRAS.506.2824L 2021MNRAS.507.5390J 2021MNRAS.507L..57S 2021MNRAS.508.1115L 2021MNRAS.508.3812N 2021RAA....21...29L 2020A&A...633A..45J 2020AJ....160..131B 2020ApJ...888...12M 2020ApJ...890...41K 2020ApJ...892...76M 2020ApJ...892..101K 2020ApJ...892L...6P 2020ApJ...893L..39L 2020ApJ...900..194K 2020ApJ...901..156N 2020ApJ...904...91V 2020ApJ...904L..29Z 2020ApJS..247...33A 2020MNRAS.492.1025C 2020MNRAS.492.1550V 2020MNRAS.492.1579Z 2020MNRAS.492.5987J 2020MNRAS.493...78A 2020MNRAS.493.1492K 2020MNRAS.493.6033Z 2020MNRAS.494..876D 2020MNRAS.494.2591B 2020MNRAS.494.2948P 2020MNRAS.495.3052C 2020MNRAS.495.3656G 2020MNRAS.496.2836N 2020MNRAS.497..846K 2020MNRAS.498..875A 2020MNRAS.499.1758V 2020RNAAS...4..223A 2019A&A...629A..92G 2019ApJ...870...29S 2019ApJ...872...42S 2019ApJ...876L..23H 2019ApJ...877..125B 2019ApJ...879...10A 2019ApJ...879...73K 2019ApJ...882..128H 2019ApJ...882..133K 2019ApJ...883...42N 2019ApJ...883..108D 2019MNRAS.483.4495D 2019MNRAS.483.4784M 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2017MNRAS.466.2560S 2017MNRAS.466.4320B 2017MNRAS.467.4711J 2017MNRAS.468..291C 2017MNRAS.471..463S 2017MNRAS.472.4287S 2016A&A...585A.128K 2016A&A...592A..52K 2016ApJ...818...92M 2016ApJ...820....8S 2016ApJ...821...66L 2016ApJ...823..105D 2016ApJ...828....7R 2016ApJ...829..119F 2016ApJ...831..129R 2016ApJ...831..143X 2016ApJ...831..193A 2016ApJ...833..138R 2016ApJ...833L..12V 2016MNRAS.455.4249T 2016MNRAS.458.3341D 2016MNRAS.459.1340S 2016MNRAS.461...79D 2016MNRAS.462.1029S 2015A&A...583L...4G 2015ApJ...798...44B 2015ApJ...798..118V 2015ApJ...801..131D 2015ApJ...801L..27H 2015ApJ...802...84Y 2015ApJ...803...83B 2015ApJ...804..115R 2015ApJ...804L..33X 2015ApJ...806...91J 2015ApJ...807...18P 2015ApJ...807..130V 2015ApJ...808...17X 2015ApJ...811...63H 2015ApJ...812L..24R 2015ApJ...813L...4B 2015ApJ...814...90A 2015ApJ...814..128K 2015ApJS..217....2M 2015ApJS..218...23A 2015BaltA..24..395M 2015MNRAS.446.4019B 2015MNRAS.446L..26K 2015MNRAS.449.4184B 2015MNRAS.453..828K 2015MNRAS.453.4159T 2015MNRAS.454.2190D 2015MNRAS.454.3886M 2014A&A...561A.116B 2014ApJ...781....6B 2014ApJ...781L..21H 2014ApJ...783...69G 2014ApJ...784..123L 2014ApJ...784..154B 2014ApJ...785..119A 2014ApJ...787..167N 2014ApJ...789...40B 2014ApJ...790...39S 2014ApJ...790..103A 2014ApJ...791...67S 2014ApJ...793...78S 2014ApJ...794L..22K 2014ApJ...795...88X 2014ApJ...796...14C 2014ApJ...797...70K 2014ApJ...797...92C 2014ApJS..213....6J 2014MNRAS.437.2217S 2014MNRAS.437.2957J 2014MNRAS.439.2033G 2014MNRAS.441..757F 2014MNRAS.443.2223M 2014MNRAS.444.1783C 2013A&A...550A..39B 2013A&A...554A..62G 2013A&ARv..21...64D 2013AN....334..860A 2013ApJ...763...29D 2013ApJ...765..151W 2013ApJ...765L...5S 2013ApJ...766....5S 2013ApJ...766...98H 2013ApJ...768...64H 2013ApJ...768..184H 2013ApJ...769..108B 2013ApJ...769..119X 2013ApJ...770L..22W 2013ApJ...773...11H 2013ApJ...773...77A 2013ApJ...773L..12B 2013ApJ...774...93K 2013ApJ...775...27C 2013ApJ...778...66K 2013ApJ...778..106J 2013ApJS..208...17A 2013MNRAS.429..523J 2013MNRAS.429.1633B 2013MNRAS.430..571E 2013MNRAS.430.2951B 2013MNRAS.431..741D 2013MNRAS.433..162Y 2013MNRAS.434.2948D 2013MNRAS.436.2950Z 2012ApJ...744...33G 2012ApJ...744...34V 2012ApJ...745..100T 2012ApJ...746L..27P 2012ApJ...748..141W 2012ApJ...749...42H 2012ApJ...753..174K 2012ApJ...755..180P 2012ApJ...759...58D 2012ApJ...760...92H 2012ApJ...760..100C 2012ApJ...760L..36R 2012ApJ...761..181W 2012ApJS..199...31N 2012AstL...38..731Z 2012MNRAS.424.2832L 2012MNRAS.425.1601T 2012MNRAS.425.2378M 2012MNRAS.426.1369K 2012Sci...335..561T 2011A&A...531A..16K 2011A&A...533A..74P 2011A&A...536A..87B 2011ApJ...727L..16R 2011ApJ...728...95V 2011ApJ...730...25R 2011ApJ...734...55P 2011ApJ...742...25Y 2011ApJ...742...97B 2011ApJ...743..102G 2011ApJ...743L..26R 2011ChA&A..35...37N 2011MNRAS.410..984J 2011MNRAS.412.2763F 2011MNRAS.413L..47B 2011MNRAS.414.3134L 2011MNRAS.415.1849P 2011MNRAS.416.2455B 2011MNRAS.418L..49B 2011PABei..29..323Z 2011PABei..29..334Z 2011RAA....11..974T 2011RAA....11.1457F 2011Sci...334.1107F 2010A&A...510A..67H 2010ApJ...709..241B 2010ApJ...710..828A 2010ApJ...715..335K 2010ApJ...722.1939M 2010ApJS..188..405A 2010ChA&A..34..187S 2010NewAR..54...80B 2010PASA...27...23H 2009A&A...504..181M 2009ApJ...693L.109K 2009ApJ...702..433K 2009MNRAS.395..884E 2009RAA.....9.1241W 2009Sci...325..848A 2008A&A...492..923S 2008ApJ...679L.105C 2008ApJ...680..654P 2008ApJ...680.1378H 2008ApJ...685.1129M 2008ApJ...687..505A 2008MNRAS.385.2279S 2008MNRAS.389.1851D 2007A&A...463L...5H 2007A&A...473..683P 2007A&A...473..883M 2007ARep...51..615K 2007ApJ...658.1183T 2007ApJ...658L...1M 2007ApJ...660..587C 2007ApJ...664.1072P 2007ApJ...665L.143Z 2007ApJ...666.1165Z 2007ApJ...670.1301C 2007MNRAS.374..793V 2007MNRAS.377..920B 2007MNRAS.378.1481L 2007MNRAS.379..282L 2007MNRAS.379.1117R 2006A&A...445..155W 2006A&A...445L...9D 2006A&A...446..785M 2006A&A...446..943W 2006A&A...448L..13H 2006A&A...450..295B 2006ARA&A..44...17G 2006ARep...50..483M 2006ARep...50..562P 2006ApJ...638..951Z 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2001PASP..113.1025T 2000A&A...353..641N 2000A&A...361.1001C 2000A&A...363..657E 2000A&A...364..265O 2000ApJ...528..336F 2000ApJ...532.1150Z 2000ApJ...532L..47R 2000ApJ...535..975C 2000ApJ...541..329T 2000ApJ...541..335K 2000ApJ...545.1007L 2000ApJ...545.1015B 2000AstL...26..699S 2000ExA....10..473R 2000MNRAS.311..555H 2000MNRAS.317...97B 2000PhR...328..237H 1999A&A...341..803B 1999A&A...343L..45E 1999A&A...346..465S 1999A&A...350..928T 1999ARep...43..727M 1999Ap&SS.266..399M 1999ApJ...510L..45S 1999ApJ...512..288T 1999ApJ...515..337C 1999ApJ...524..295S 1999BASI...27..191K 1999MNRAS.304..359C 1999MNRAS.307..925T 1999MNRAS.308..473F 1999NewAR..43..481M 1999PASP..111..385T 1998A&A...330.1005G 1998A&A...335..596S 1998AcA....48..355D 1998ApJ...493..397C 1998ApJ...493..873B 1998ApJ...493L..35C 1998ApJ...499..385M 1998ApJ...499L.183S 1998ApJ...501..270K 1998MNRAS.294..177Z 1998MNRAS.296..893L 1998MNRAS.300..352E 1998MNRAS.300..373H 1998MmSAI..69..847B 1998MmSAI..69..927M 1998PhR...305...93O 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1996PASP..108..939E 1995A&A...297L..29O 1995A&A...297L..41V 1995A&A...301..757B 1995APh.....4....1K 1995Ap&SS.230..263R 1995Ap&SS.232..327G 1995Ap&SS.233..231R 1995ApJ...439..928C 1995ApJ...439..933L 1995ApJ...443L..21F 1995ApJ...444..419R 1995ApJ...447..807F 1995ApJ...449..156N 1995ApJ...450..757N 1995ApJ...450..784S 1995ApJ...452..346L 1995ApJ...452L.121B 1995ApJ...453..419L 1995ApJ...454..442E 1995JApA...16..165B 1995JApA...16..207R 1995JApA...16..233M 1995JApA...16..255V 1995JApA...16..289G 1995LAstr.109..254A 1995MNRAS.273..122N 1995MNRAS.273..411L 1995MNRAS.273..731R 1995MNRAS.274..300L 1995MNRAS.274..547R 1995MNRAS.275..381M 1995PASA...12...71L 1995SSRv...72..593M 1994A&A...281L.101S 1994A&A...283..867D 1994A&A...285L..21V 1994A&A...288..472B 1994A&A...288..773R 1994A&A...289..763J 1994ARA&A..32..591P 1994AZh....71..120K 1994Ap&SS.212...91P 1994ApJ...421L..15C 1994ApJ...422..304T 1994ApJ...423..714B 1994ApJ...425L..41B 1994ApJ...426L..85A 1994ApJ...427..978C 1994ApJ...430L..57B 1994ApJ...431..397M 1994ApJ...431..724C 1994ApJ...436..312A 1994ApJ...436L.153D 1994ApJS...90..797A 1994ApJS...92..559H 1994Ast....22i..51K 1994BAAS...26..888A 1994BAAS...26Q.888A 1994LAstr.108...49C 1994MmSAI..65..237V 1994MmSAI..65..291T 1994PASAu..11...81J 1994PASP..106.1075R 1993A&A...267L...1T 1993A&AS...97..313T 1993ARA&A..31...93V 1993Afz....36..129E 1993ApJ...402..264C 1993ApJ...403..249A 1993ApJ...403..322D 1993ApJ...404..723N 1993ApJ...405..353A 1993ApJ...405L..59B 1993ApJ...406..629G 1993ApJ...408..179C 1993ApJ...408L..17C 1993ApJ...410..281T 1993ApJ...410..719B 1993ApJ...410L..95D 1993ApJ...411L..75C 1993ApJ...411L..83B 1993ApJ...413L..39T 1993ApJ...415..779B 1993ApJ...415L.115W 1993ApJS...88..529T 1993BAAS...25..912C 1993BAAS...25..917F 1993FA90..R.....38W 1993MmSAI..64..745B 1993Natur.361...47L 1992A&A...256L..35R 1992A&A...261..472T 1992A&A...265...65E 1992ApJ...384L..47F 1992ApJ...385L..45F 1992ApJ...388L..19B 1992ApJ...390..541W 1992ApJ...397..249N 1992ApJ...400..638A 1992ApJ...401..724M 1992BAAS...24..755G 1992BAAS...24.1216P 1992BAAS...24.1229D 1992C&E...265...52L 1992MNRAS.254p..11E 1992MNRAS.254p..19S 1992Natur.356..320T 1992Natur.359..300K 1992Natur.359..303F 1992NewSc1830...40C 1992PASP..104..775C 1992PTRSL.341..117T 1992SSRv...59..315W 1991A&A...241L..21G 1991A&A...241L..25R 1991A&A...246..411W 1991ApJ...366..253P 1991ApJ...367..221K 1991ApJ...368..504J 1991ApJ...370..345M 1991ApJ...370L..27E 1991ApJ...373..579W 1991ApJ...377..588S 1991ApJ...379..359L 1991ApJ...379L..21B 1991ApJ...379L..69T 1991ApJ...380..557R 1991ApJ...381L..21T 1991ApJ...383..739H 1991ApJ...383L..53A 1991ApL....28...73C 1991BAAS...23.1326W 1991BAAS...23.1348T 1991BAAS...23.1441M 1991JApA...12...17B 1991MNRAS.252..277J 1991Mercu..20...55B 1991Natur.349..220P 1991Natur.352..219M 1991Natur.352..221S 1991PASP..103..781R 1991PCMP3.R....129W 1991PhR...203....1B 1991Rech...22..848J 1990A&A...227L...9P 1990A&A...232...62S 1990A&A...232L...5A 1990ARA&A..28..183C 1990Afz....32..193B 1990Ap&SS.168..277T 1990ApJ...351..642F 1990ApJ...357..208K 1990ApJ...358..561H 1990ApJ...361..644T 1990ApJ...361L..61N 1990ApJ...363..589E 1990ApJ...364..123F 1990ApJ...364L..37B 1990Ast....18i..44K 1990BAAS...22.1286G 1990BAAS...22.1287E 1990BAAS...22.1342R 1990JAF....38...18M 1990MNRAS.242p..17E 1990MNRAS.245..514B 1990MNRAS.247..523P 1990Natur.347..650L 1990PhT....43c..26B 1990RMxAA..21..633B 1990S&T....80..240G 1989A&A...214....1S 1989A&A...218..131C 1989AJ.....98..641B 1989ApJ...339..279C 1989ApJ...339..291C 1989ApJ...342..934R 1989ApJ...345..210R 1989ApJ...346..844W 1989Ast....17d..10. 1989BAAS...21.1108R 1989BAAS...21.1205T 1989Gemin..26....1C 1989IBVS.3323....1K 1989JBAA...99...49M 1989MNRAS.238p..25C 1989MNRAS.240p..31C 1989Natur.337..236M 1989Natur.337..595L 1989Natur.338..234K 1989Natur.338..712B 1989Natur.342..128L 1989S&W....28...73G 1989S&W....28..423C 1988A&A...206L..15L 1988ATsir1531....1T 1988ApJ...331L..25M 1988ApJ...333L..91W 1988ApJ...335L..61D 1988ApJ...335L..67E 1988BAAS...20..981F 1988BAAS...20.1048E 1988BAAS...20.1050H 1988BAAS...20.1106T 1988IAUC.4617....0F 1988IAUC.4674....0M 1988LAstr.102..424B 1988MNRAS.235p..33C 1988Natur.333..205G 1988Natur.333..237F 1988Natur.333..832P 1988Natur.334..225K 1988Natur.334..298B 1988Natur.334..504K 1988Natur.334..684V 1988Natur.334..686F 1988Natur.335..764R 1988Natur.335..801K 1988Natur.336..557E 1988Natur.336..560F 1988NewSc.118...71G 1988Rech...19..978B 1957AJ.....62....2A Measures (MK:1 PLX:1 PM:2 XMM:1 ): MK:1PLX:1PM:2XMM:1 Notes (3) : (S) 22-Nov-2007 - du ref:~ obj:EQ J195936+204814 companion of the millisecond pulsar \object{PSR B1957+20} (S) 22-Nov-2007 - pv ref:~ obj:PSR B1957+20 Millisecond pulsar with brown dwarf companion \object{EQ J195936+204814} (S) 25-Jul-2017 - cl ref:2013ApJ...773...77A obj:V* QX Sge Erroneously named VER J1959+208 in 2013ApJ...773...77A ================================================================================