C.D.S. - SIMBAD4 rel 1.8 - 2024.05.10CEST11:02:35 NGC3998 ------- Object NGC 3998 --- Sy2 --- OID=@551722 (@@140798,0) --- coobox=3392 Coordinates(ICRS,ep=J2000,eq=2000): 11 57 56.1334044408 +55 27 12.922443432 (Opt ) A [0.0710 0.0744 90] 2020yCat.1350....0G Coordinates(FK4,ep=B1950,eq=1950): 11 55 20.9516094958 +55 43 54.767883798 Coordinates(Gal,ep=J2000,eq=2000): 138.1723349878691 +60.0633488382720 hierarchy counts: #parents=7, #children=0, #siblings=0 Proper motions: 0.049 0.136 [0.093 0.101 90] A 2020yCat.1350....0G Parallax: 0.0799 [0.1014] A 2020yCat.1350....0G Radial Velocity: 1070 [150] C 2022ApJS..261....2K Redshift: 0.00357417 [0.0005] C 2022ApJS..261....2K cz: 1071.5092 [150] C 2022ApJS..261....2K Flux B : 11.64 [0.02] C 2016MNRAS.460..689R Flux V : 12.10 [~] D 2010A&A...518A..10V Flux G : 15.549679 [0.004629] C 2020yCat.1350....0G Flux R : 10.09 [0.02] C 2016MNRAS.460..689R Flux J : 8.327 [0.007] C 2006AJ....131.1163S Flux H : 7.584 [0.008] C 2006AJ....131.1163S Flux K : 7.365 [0.010] C 2006AJ....131.1163S Flux u : 15.09 [0.01] D 2009ApJS..182..543A Flux g : 14.121 [0.007] C 2009ApJS..182..543A Flux r : 10.632 [0.006] C 2009ApJS..182..543A Flux i : 13.604 [0.007] C 2009ApJS..182..543A Flux z : 12.308 [0.007] C 2009ApJS..182..543A Spectral type: ~ ~ ~ Morphological type: SA C 2019MNRAS.488..590B Angular size: 1.987 1.629 130 (NIR ) C 2006AJ....131.1163S Identifiers (63): WISE J115756.15+552713.0 ILT J115755.83+552710.8 Gaia DR3 841020502831092352 TIC 55684273 2E 2561 1AXG J115757+5527 BWE 1155+5543 EQ 1155+557 GB6 B1155+5543 INTREF 470 IRAS 11553+5543 IRAS F11553+5543 LEDA 37642 MCG+09-20-046 NGC 3998 NVSS J115756+552712 QSO B1155+557 RBS 1053 UGC 6946 WB 1155+5543 XSS J11570+5514 Z 269-25 [R97] NGC 3998 9 [RW2000] NGC 3998 X-2 [T76] 47B [WTW94] 1155+557 2MASX J11575616+5527128 1ES 1155+55.7 1RXS J115756.1+552717 2E 1155.3+5543 87GB 115521.8+554353 FIRST J115756.1+552713 RX J1157.9+5527 WN B1155.3+5543 Z 1155.3+5543 [CHM2007] LDC 867 J115756.16+5527128 [CHM2007] HDC 706 J115756.16+5527128 [M98c] 115521.4+554357 [VV2000c] J115756.1+552713 [VV2003c] J115756.1+552713 [VV2006c] J115756.1+552713 [VV98c] J115756.1+552713 [ZEH2003] RX J1157.9+5527 1 UZC J115756.2+552713 CGRaBS J1157+5527 PBC J1158.1+5527 SWIFT J1157.8+5529 SWIFT J1158.0+5526 [LB2005] NGC 3998 X1 2MASS J11575612+5527128 [SMM2006b] J115756.13+552713.0 [SRM2005] J115756.13+552712.9 [VV2010c] J115756.1+552713 2XMM J115756.1+552714 SDSS J115756.13+552713.0 IVS B1155+557 [BAG2012] 179.5145+55.4250 6C 115520+554340 7C 115520.50+554349.00 RGB J1157+554 [CAB95] IRAS F11553+5543 SWIFT J1158.1+5526 Gaia DR2 841020502831092352 Bibcodes 1850-2024 () (644): 2023A&A...669A.114D 2023A&A...670A.117C 2023A&A...675A.105D 2023A&A...676A.102C 2023A&A...676L..13C 2023ApJ...944..195W 2023MNRAS.518.2177G 2023MNRAS.518.6293G 2023MNRAS.520.1975G 2023MNRAS.521.1023G 2023MNRAS.521.1547S 2023MNRAS.522.3412D 2023MNRAS.524.4670J 2022A&A...657A...9C 2022A&A...658A...6K 2022A&A...658A.154K 2022A&A...659A..32P 2022A&A...660A.133H 2022A&A...662A..98B 2022A&A...667A..51T 2022ApJ...926...30Q 2022ApJ...928..178P 2022ApJ...929..141K 2022ApJS..259...37S 2022ApJS..259...43C 2022ApJS..261....2K 2022ApJS..261....4O 2022ApJS..261....6K 2022MNRAS.510.5102O 2022NatAs...6.1035C 2021A&A...645A..18D 2021A&A...655A..17S 2021ApJ...907....6Z 2021ApJ...914..121A 2021ApJ...916...90B 2021MNRAS.500..215D 2021MNRAS.500..786D 2021MNRAS.500.1343S 2021MNRAS.500.4749B 2021MNRAS.501.2608B 2021MNRAS.504.4416D 2021MNRAS.506.4354M 2021MNRAS.506.4960H 2021MNRAS.507..991S 2021MNRAS.507.4274M 2021MNRAS.508.4786D 2020A&A...634A.108S 2020A&A...635A.129K 2020A&A...636A...8Y 2020A&A...640A..31P 2020A&A...642A.107C 2020ApJ...890..152M 2020ApJ...892...18K 2020ApJ...896..122L 2020ApJ...897..111Z 2020ApJ...899...82B 2020ApJ...900..124B 2020ApJ...903...97S 2020MNRAS.491.1901H 2020MNRAS.492.4120D 2020MNRAS.493L..54K 2020MNRAS.494.1784A 2020MNRAS.494.5793K 2020MNRAS.496.3402D 2020MNRAS.498.2138B 2020MNRAS.498.4790K 2019A&A...622A..87K 2019A&A...622A.132M 2019A&A...622A.209A 2019A&A...623A...5D 2019A&A...630A.131M 2019A&A...631A.176C 2019AJ....157..158A 2019ApJ...870...31I 2019ApJ...870...73Y 2019ApJ...871...80G 2019ApJ...872..148C 2019ApJ...875...82H 2019ApJ...884..169G 2019ApJ...886...37D 2019ApJ...887...10S 2019ApJS..244...24L 2019MNRAS.486.1995S 2019MNRAS.488..590B 2019MNRAS.488.1199D 2019MNRAS.488.4317B 2019MNRAS.490..600D 2019MNRAS.490.4606B 2018A&A...609A...9L 2018A&A...609A..37C 2018A&A...614A.143M 2018A&A...615A..26B 2018A&A...616A.152S 2018A&A...618A..45B 2018A&A...618A..81T 2018ApJ...854..167G 2018ApJ...855...79O 2018ApJ...862L..12S 2018ApJ...864..118K 2018ApJ...866..137L 2018ApJS..235....4O 2018AstBu..73..124K 2018MNRAS.473.2930D 2018MNRAS.476.5127R 2018MNRAS.480.1106C 2018MNRAS.481.3623C 2017A&A...598A..10L 2017A&A...603A.127S 2017A&A...605A..74K 2017ARep...61..310K 2017ApJ...835...74I 2017ApJ...835..223S 2017ApJ...836..152L 2017ApJ...837..120G 2017ApJ...838L..10B 2017ApJ...839...88K 2017ApJ...840...27S 2017ApJ...843...16K 2017ApJ...844..170T 2017ApJ...850...74K 2017ApJS..228....6X 2017ApJS..233...17R 2017MNRAS.464..329Y 2017MNRAS.464.1029N 2017MNRAS.464.4611F 2017MNRAS.467..540L 2017MNRAS.467.1397P 2017MNRAS.467.4565L 2017MNRAS.468.4216Y 2017MNRAS.470.1101W 2017MNRAS.471.2848L 2017MNRAS.471.4005B 2017MNRAS.472..334L 2016A&A...586A..48B 2016A&A...587A.160D 2016A&A...588A..14T 2016A&A...592A..94F 2016AJ....152...50T 2016ApJ...817...21S 2016ApJ...818...47S 2016ApJ...821...88S 2016ApJ...825....3L 2016ApJ...826..167G 2016ApJ...826L..32G 2016ApJ...829...20W 2016ApJ...831...37K 2016ApJ...831..134V 2016ApJS..222...10S 2016MNRAS.455..563A 2016MNRAS.458.2221N 2016MNRAS.459.3963C 2016MNRAS.460..689R 2016MNRAS.460.1382S 2016MNRAS.460.2143W 2016MNRAS.460.3029B 2016MNRAS.460.4492D 2016MNRAS.461.3533G 2015A&A...574A..65B 2015A&A...578A..74G 2015A&A...581A..76B 2015A&A...581A..98D 2015A&A...582A..86H 2015AJ....149...32M 2015AJ....149..171T 2015AJ....150...43T 2015ApJ...798...54G 2015ApJ...802..113K 2015ApJ...803....5S 2015ApJ...803..109H 2015ApJ...812..127K 2015ApJ...813...82R 2015ApJ...814...11T 2015ApJ...814..149C 2015ApJS..217...13M 2015ApJS..217...27A 2015ApJS..217...32B 2015ApJS..218...10V 2015ApJS..219....4S 2015MNRAS.446..120D 2015MNRAS.446.2330S 2015MNRAS.446.2823R 2015MNRAS.448.3484M 2015MNRAS.450.2317S 2015MNRAS.452.1792Y 2015MNRAS.453.3447D 2015MNRAS.454..766A 2014A&A...562A.121C 2014A&A...563A.119B 2014A&A...567A..92G 2014A&A...569A..91K 2014ARep...58..281C 2014ApJ...780...69L 2014ApJ...780...70L 2014ApJ...780L..14M 2014ApJ...781...12H 2014ApJ...782...39T 2014ApJ...785...30V 2014ApJ...787...62M 2014ApJ...789..150G 2014ApJS..213....3M 2014MNRAS.438.2804N 2014MNRAS.438.3058R 2014MNRAS.439..690H 2014MNRAS.439.1403M 2014MNRAS.439.1648A 2014MNRAS.441.1243H 2014MNRAS.441.1992L 2014MNRAS.443...72J 2014MNRAS.443.1151N 2014MNRAS.444.3015L 2014MNRAS.444.3388S 2014MNRAS.444.3408Y 2014MNRAS.444.3427D 2014MNRAS.445..630P 2014RAA....14..144H 2013A&A...556A..47H 2013A&A...558A.108B 2013AJ....145..138B 2013AJ....146...67B 2013AJ....146...86T 2013ARA&A..51..511K 2013ARep...57..797Z 2013ApJ...763..111V 2013ApJ...764...17L 2013ApJ...764...79D 2013ApJ...764..151G 2013ApJ...764..184M 2013ApJ...765...23D 2013ApJ...766..121M 2013ApJ...768...76S 2013ApJ...770...86W 2013ApJ...770..157K 2013ApJ...772..114R 2013ApJ...776..118S 2013ApJ...777..164M 2013ApJ...778...47S 2013ApJ...779L..17B 2013ApJS..207...19B 2013MNRAS.428.1790W 2013MNRAS.429.2264K 2013MNRAS.430.2002R 2013MNRAS.430.3489L 2013MNRAS.431.3060E 2013MNRAS.432.1709C 2013MNRAS.432.1768K 2013MNRAS.432.1845S 2013MNRAS.432.1862C 2013MNRAS.433.2812K 2013MNRAS.434..387S 2013MNRAS.436.2708M 2012A&A...537A..48M 2012A&A...539A.104Y 2012A&A...540A..23S 2012AJ....143...78K 2012AJ....144...11M 2012ApJ...747...61Y 2012ApJ...748...11H 2012ApJ...749...21A 2012ApJ...753...79W 2012ApJ...753..104M 2012ApJ...758...30J 2012ApJ...759...65T 2012ApJ...761..184W 2012ApJS..199...26H 2012ApJS..201...34B 2012MNRAS.419.2497B 2012MNRAS.422.1586G 2012MNRAS.422.1835S 2012MNRAS.422.3208S 2012MNRAS.424.3050W 2012MNRAS.426..296D 2011A&A...527A..23M 2011A&A...527A.126P 2011A&A...530A.149Y 2011A&A...532A..74B 2011AJ....142...89P 2011AJ....142..145G 2011ARep...55..595Z 2011ApJ...726...87Y 2011ApJ...727...93D 2011ApJ...728...58B 2011ApJ...731L..41B 2011ApJ...735...71W 2011ApJ...738...17G 2011ApJ...739...57K 2011ApJ...739...64X 2011ApJ...743...83D 2011ApJS..192...10L 2011ApJS..194...29R 2011ApJS..195....9C 2011AstL...37..374Z 2011MNRAS.412.2211G 2011MNRAS.413..813C 2011MNRAS.413.1479S 2011MNRAS.414..500H 2011MNRAS.414..888E 2011MNRAS.414..940Y 2011MNRAS.414.2923K 2011MNRAS.415.2158R 2011MNRAS.416.1680C 2011MNRAS.416.2840L 2011MNRAS.417..184B 2011MNRAS.418.1452L 2011Natur.469..374K 2011Natur.480..215M 2010A&A...510A..48C 2010A&A...511A..53V 2010A&A...517A..33Y 2010A&A...518A..10V 2010A&A...524A..64C 2010ARA&A..48...21H 2010ApJ...711..796E 2010ApJ...716..490S 2010ApJ...717..640P 2010ApJ...721..259B 2010ApJ...725.2270P 2010ApJS..186..378T 2010ApJS..187..135E 2010MNRAS.401..677P 2010MNRAS.405.1089L 2010MNRAS.407.2399M 2010PASP..122.1397S 2009A&A...506.1107G 2009AJ....137.3388W 2009ApJ...691.1501D 2009ApJ...692..856B 2009ApJ...692L..34L 2009ApJ...693L.136M 2009ApJ...698..198G 2009ApJ...698.1367G 2009ApJ...699..281Z 2009ApJ...699..603A 2009ApJ...699..626H 2009ApJ...702..955D 2009ApJ...703.1034Y 2009ApJ...703.1257H 2009ApJ...703.1502F 2009ApJ...704.1570G 2009ApJ...706..404G 2009ApJS..183....1H 2009ApJS..184..138H 2009MNRAS.393..628M 2009MNRAS.398..109W 2008A&A...478..353M 2008A&A...479..355D 2008A&A...483...57S 2008A&A...490..995P 2008AJ....135..747G 2008AJ....136.1677W 2008ARA&A..46..475H 2008ApJ...674..133T 2008ApJ...676..184T 2008ApJ...679..101S 2008ApJ...680..143G 2008ApJS..175...97H 2008ChJAA...8..245D 2008MNRAS.386.2242H 2008MNRAS.391L..49L 2008PASA...25..167G 2007A&A...461.1209D 2007A&A...465...71T 2007A&A...472..773N 2007AJ....134.1508V 2007AN....328..562M 2007ApJ...655..718S 2007ApJ...655..790C 2007ApJ...658..815S 2007ApJ...662..808L 2007ApJ...663..808P 2007ApJ...664...71D 2007ApJ...667..749P 2007ApJ...668...94H 2007ApJ...668L.107M 2007ApJ...669...96W 2007MNRAS.374..691Z 2007MNRAS.377.1696M 2007MNRAS.378..198G 2006A&A...452..459H 2006A&A...452..739S 2006A&A...453...27C 2006A&A...455..173P 2006A&A...455..773V 2006A&A...460..439D 2006AJ....131.1961V 2006ApJ...645L.121C 2006ApJ...653..127S 2006ApJ...653L..13S 2006ApJS..164...81M 2006ApJS..166..498S 2006MNRAS.367..627E 2006MNRAS.368..851R 2005A&A...429.1125L 2005A&A...435..521N 2005A&A...440...73C 2005A&A...443..373S 2005AN....326Q.556S 2005ApJ...620..151R 2005ApJ...621..130W 2005ApJ...625..667J 2005ApJ...625..699M 2005ApJ...626...95S 2005ApJ...629L..21S 2005ApJ...633...86S 2005ApJ...633L..77M 2005ApJ...634..161H 2005ApJS..157...59L 2005MNRAS.360..782G 2005MNRAS.364.1041R 2004A&A...416...35W 2004A&A...416..507C 2004A&A...418..927R 2004A&A...420..873V 2004A&A...423..469S 2004AJ....127.2085A 2004ApJ...605..127G 2004ApJ...606..173P 2004ApJ...617L..29B 2004ApJS..151..237T 2004MNRAS.350.1087S 2004MNRAS.352.1028N 2003A&A...401..927B 2003A&A...405....5B 2003A&A...406..535Z 2003A&A...411L..59E 2003A&A...412...45P 2003AJ....125.2307A 2003AJ....125.2809S 2003AJ....126.1707G 2003AJ....126.2237D 2003AJ....126.2268W 2003ApJ...590...86L 2003MNRAS.340..793W 2003MNRAS.345.1057M 2003PASJ...55..947L 2002A&A...385..425F 2002A&A...386...60G 2002AJ....124..782V 2002ApJ...564..120H 2002ApJ...567..811M 2002ApJ...579..530W 2002ApJS..139....1T 2002MNRAS.330..547T 2001AJ....122.2243S 2001Ap.....44..491M 2001ApJ...546..681T 2001ApJS..133....1U 2001MNRAS.325..385T 2001MNRAS.327.1004B 2001MNRAS.328..461O 2001MmSAI..72...37P 2001PASJ...53..647A 2000A&A...355..922J 2000A&A...360..878P 2000AAS...197.9203B 2000AJ....120.1946S 2000AN....321....1S 2000ApJ...530..688A 2000ApJ...532..323P 2000ApJ...533..729T 2000ApJ...539..161T 2000ApJ...543..178G 2000ApJ...543..417G 2000ApJ...544L..31L 2000ApJS..129..547B 2000MNRAS.311..456M 2000MNRAS.312....2S 2000MNRAS.312..497B 2000MNRAS.315...98R 2000MNRAS.318..798B 1999AJ....117.1733R 1999AJ....118.1169X 1999AN....320..308A 1999ApJ...516..672H 1999ApJ...525..673B 1999ApJ...527..624P 1999ApJS..120..179P 1999ApJS..125..409C 1999MNRAS.309..623F 1999PASP..111..438F 1999PPMtO..18..260J 1999RMxAA..35..187C 1998A&AS..127..117P 1998A&AS..128..299P 1998A&AS..131...73M 1998A&AS..132..255G 1998AJ....116.1626B 1998Ap.....41..308M 1998ApJ...497..699K 1998ApJ...501L..37P 1998ApJ...503..168I 1998ApJ...503..212T 1998ApJS..114...59L 1997A&A...319...18R 1997A&A...323...71C 1997AJ....113..950F 1997ApJ...476..666F 1997ApJ...489..615S 1997ApJS..110..321B 1997ApJS..111..163B 1997ApJS..112..315H 1997ApJS..112..391H 1997MmSAI..68..139V 1997SSRv...81....1H 1996A&A...309..749P 1996A&A...313..405B 1996A&A...315L..75K 1996A&AS..115..439E 1996A&AS..117..467G 1996A&AS..118...89B 1996AJ....111..109S 1996AJ....112.2471T 1996ApJ...459..110F 1996ApJ...462..142L 1996ApJ...462..183H 1996ApJ...473..219C 1996ApJS..105..369M 1996ApJS..106...51B 1996BAAS...28T1287F 1996MNRAS.283..543K 1995A&AS..109..147B 1995AJ....109..517B 1995AJ....109.2318C 1995AN....316...39B 1995ApJ...439...90M 1995ApJS...97..141E 1995ApJS...98..477H 1995ApJS...99...67N 1995ApJS..100..105M 1994A&A...291...74P 1994A&AS..105..481M 1994ApJ...434...67F 1994ApJS...92...53W 1994ApJS...94..517M 1994MNRAS.269..655K 1993A&AS..100...47G 1993AJ....106..907H 1993AJ....106..923S 1993Ap&SS.205...19H 1993ApJ...418..626P 1993ApJ...418..644P 1993ApJS...85....1N 1993PASJ...45...35M 1992A&AS...92..749T 1992A&AS...93..211F 1992AJ....104.1039S 1992ApJ...387..536R 1992ApJ...393...90H 1992ApJ...399...76K 1992ApJ...401L..79B 1992ApJS...79..197I 1992ApJS...80..257E 1992ApJS...80..531F 1992ApJS...80..645K 1992C&E...269...28K 1991A&A...243...71V 1991A&AS...90..375L 1991AJ....101..102W 1991AJ....101..127W 1991AJ....101..362C 1991AJ....101.2056E 1991AJ....102.1314S 1991AJ....102.1663C 1991ApJ...366...88A 1991ApJS...75..751R 1991MNRAS.250..392G 1990A&A...227....6V 1990A&A...233..317F 1990AJ.....99.1435K 1990AJ.....99.1740H 1990AJ....100.1489W 1990ApJ...359....4V 1990ApJ...364..444V 1990ApJS...74..347K 1989A&AS...81..253D 1989AZh....66..693N 1989ApJ...337..209W 1989ApJ...347..127F 1989BAAS...21.1166D 1989S&T....77..444H 1988A&A...199...41V 1988AISAO..26...72N 1988Ap&SS.148..305P 1988BAAS...20..970R 1988IUE88...2..307R 1988PASP..100...54W 1988SoSAO..55....5L 1987A&A...180...12D 1987A&AS...67..341B 1987Afz....26..335M 1987Afz....27..275P 1987Afz....27..535A 1987ApJ...312..503C 1987BAAS...19..712V 1987IAUS..127..145K 1987IAUS..127..431C 1987PASJ...39..221M 1986AJ.....91...23W 1986AN....307..157V 1986ApJ...306..483J 1986ApJ...310L..11W 1986ApJ...311L...7F 1986ApJS...62..703K 1986MNRAS.218..429S 1986MNRAS.219..657S 1985A&A...143..334B 1985A&AS...60..517P 1985A&AS...61..273D 1985AJ.....90..454K 1985AJ.....90.1772D 1985ARA&A..23..147A 1985ApJ...291..668D 1985ApJ...297..371H 1985ApJ...299..443W 1985ApJS...57..503F 1985ApJS...59....1W 1984A&A...134..207H 1984AJ.....89..356B 1984AJ.....89..966D 1984AJ.....89.1111H 1984ApJ...280....7O 1984ApJ...287....1D 1984ApJ...287...41W 1984ApJS...56...91D 1983ApJ...264..105F 1983ApJ...269..466K 1983ApJS...52...23B 1983ApJS...52...89H 1983BAAS...15..913D 1983IAUS..100...99V 1983MNRAS.202...53K 1983MNRAS.202.1001B 1983MNRAS.204..811C 1981PASP...93....5B 1980A&A....87..152H 1978ApJ...221..456C 1977AJ.....82...21B 1976ApJ...208...20T 1975AJ.....80..771S 1975ApJ...202....7G 1974VeARI..26....0B 1973A&A....24..247E 1970AJ.....75..523H 1957PASP...69..291M 1926ApJ....64..321H Measures (distance:7 herschel:5 ISO:5 IUE:14 PLX:1 PM:1 velocities:15 XMM:1 ): distance:7herschel:5ISO:5IUE:14PLX:1PM:1velocities:15XMM:1 Notes (2) : (S) 18-Jul-2006 - dc ref:~ obj:NAME COM SEE ALSO NAME NGC 3998 GROUP see also \object{NAME NGC 3998 GROUP} (S) 03-Nov-2015 - bc ref:~ obj:GB6 B1155+5543 See also \vizier{VIII/85A/spectra}{Seq= 49790 }{Specfind radio flux densities}. 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