C.D.S. - SIMBAD4 rel 1.8 - 2024.04.24CEST09:10:23 NGC 6818 --------- Object NGC 6818 --- PN --- OID=@2570122 (@@59909,0) --- coobox=19224 Coordinates(ICRS,ep=J2000,eq=2000): 19 43 58.022 -14 09 13.44 (IR ) C [~ ~ ] 2006AJ....131.1163S Coordinates(FK4,ep=B1950,eq=1950): 19 41 08.982 -14 16 27.16 Coordinates(Gal,ep=J2000,eq=2000): 025.858673 -17.912618 hierarchy counts: #parents=0, #children=0, #siblings=0 Proper motions: ~ ~ [~ ~ ] ~ ~ Parallax: ~ [~] ~ ~ Radial Velocity: -13.8 [0.9] E 1953GCRV..C......0W Redshift: -0.000046 [0.000003] E 1953GCRV..C......0W cz: -13.80 [0.90] E 1953GCRV..C......0W Flux V : 9.3 [~] E ~ Flux J : 10.657 [0.013] C 2006AJ....131.1163S Flux H : 10.598 [0.042] C 2006AJ....131.1163S Flux K : 9.914 [0.034] C 2006AJ....131.1163S Spectral type: ~ ~ ~ Morphological type: ~ ~ ~ Angular size: 0.44366670 0.44366670 -87 (Rad ) C 2021MNRAS.503.2887B Identifiers (17): BD-14 5523 GCRV 12096 HD 186282 IRAS 19411-1416 IRAS F19411-1416 NGC 6818 PK 025-17 1 PN G025.8-17.9 PN VV 241 PN VV' 511 PN ARO 12 PN Sa 2-392 SCM 250 2MASX J19435802-1409134 NAME Little Gem Nebula AT20G J194357-140911 WEB 17041 Bibcodes 1850-2024 () (346): 2022ApJ...927...46S 2022MNRAS.516.6145P 2021A&A...656A.110C 2021MNRAS.503.2887B 2020A&A...638A.103C 2020A&A...640A..10W 2020MNRAS.492..950A 2020MNRAS.493..730M 2018A&A...616L...2K 2018MNRAS.479.5657H 2016ApJ...817...68Z 2016MNRAS.455.1459F 2015A&A...579A..86W 2015ApJS..217...25G 2015ApJS..218...25S 2015MNRAS.451.3228C 2014ApJ...784..173D 2014ApJS..213....3M 2013A&A...557A.121G 2013A&A...558A..78J 2013ApJ...765...78A 2013MNRAS.428.3443M 2013MNRAS.431....2F 2013RMxAA..49...87P 2011A&A...525A..58G 2011A&A...526A...6W 2011MNRAS.417.2651M 2011RMxAA..47...83P 2010A&A...511A..53V 2010A&A...517A..95P 2010AJ....139.2465G 2010ApJ...714.1096S 2009A&A...498..463P 2009AstL...35..518M 2009PASP..121..316D 2008A&A...482..529U 2008ApJ...689..194S 2008ApJS..174..158S 2008PASP..120..380W 2007A&A...475..217Q 2007AJ....134.1380M 2007AJ....134.1679O 2007ApJS..169..289H 2007MNRAS.381..669W 2007MNRAS.382.1607C 2006A&A...457..189P 2005A&A...436..549S 2005A&A...436..953P 2005AJ....129..927R 2005ARep...49..390H 2005ApJS..157..371R 2005MNRAS.358..457Z 2005MNRAS.361..330R 2005NewA...10..237Z 2004A&A...416..955S 2004A&A...427..873W 2004ApJ...605..784R 2004ApJ...610..813B 2004ApJ...615..323S 2004IAUS..217..190R 2004MNRAS.349..793P 2004MNRAS.351..935Z 2004MNRAS.353..589P 2004MNRAS.353..953T 2003A&A...400..161B 2003A&A...403..659A 2003A&A...405..627T 2003A&A...408.1029K 2003AJ....126..887M 2003MNRAS.344..501P 2003MNRAS.345..186T 2002A&A...382..282C 2002A&A...384.1062T 2002A&A...387.1074M 2002AJ....123.3329O 2002ARA&A..40..263S 2002RMxAC..12...95A 2002RMxAC..12..106R 2001A&A...374..599B 2001A&A...378..843K 2001Ap&SS.277..393C 2001Ap&SS.277..545M 2001ApJ...547..302G 2001RMxAA..37..115K 2000A&A...361.1121M 2000A&A...362..730C 2000Ap&SS.274..205P 2000Ap.....43..463K 2000MNRAS.318...77H 2000RMxAA..36....3C 1999A&A...345..629M 1999A&A...352..297S 1999ApJ...514..878H 1999ApJS..123..219C 1999MNRAS.304...27K 1998A&A...329..691K 1998A&A...329L...9P 1998A&A...340..527P 1998A&AS..132...13D 1998AJ....115.1989T 1998ARep...42..293M 1998Ap&SS.255..513K 1998ApJ...495..328M 1998ApJS..117..361C 1998MNRAS.295..683K 1998MNRAS.297..617C 1997A&A...318..256G 1997ARep...41..760M 1997ApJS..112..487S 1996A&A...313..913C 1996A&AS..116..395F 1996ApJ...462..777K 1996MNRAS.279.1137K 1996PASP..108..610M 1995A&A...303..535G 1995A&AS..114..269D 1995Ap&SS.232...99M 1995ApJS...98..659Z 1995MNSSA..54...72. 1995RMxAA..31..131P 1994A&A...282..199R 1994A&A...288..897T 1994A&A...288..921C 1994A&AS..104..169P 1994A&AS..106..559T 1994A&AS..108..485V 1994Ap&SS.219..231M 1994ApJ...432..427A 1994ApJS...90..179G 1994BaltA...3..112N 1994PASP..106...56F 1994PASP..106..756F 1993A&A...276..463S 1993A&A...279..521S 1993A&AS..102..595T 1993ApJS...88..137Z 1993MNRAS.260..855T 1993MNRAS.261..465L 1993MNRAS.262..699L 1993MNRAS.263..256L 1993PASP..105.1287R 1993yCat.3135....0C 1992A&A...262..271M 1992A&AS...94..399C 1992A&AS...95..337T 1992A&AS...96...23S 1992AZh....69..960K 1992ApJ...389..443K 1992Ast....20h..69J 1992ESOPN...1....1A 1992MNRAS.257..317K 1991A&A...250..159D 1991A&AS...88..121P 1991A&AS...90...89A 1991Ap&SS.181...73G 1991ApJ...374..227H 1991ApJ...381L..59K 1991ApJS...76..687P 1990A&A...232..184P 1990A&A...237..495S 1990A&A...240..467S 1990ApJ...356..229H 1990ApJ...357..548F 1989A&AS...78..301W 1989Ap&SS.154...21A 1989ApJ...341..901R 1989ApJ...343..811S 1989ApJ...345..306L 1989MNRAS.237..487K 1988A&A...197..266G 1988A&A...200..178M 1988Ap&SS.149..343G 1988ApJ...324..501Z 1988ApJ...327..342T 1988ApJ...334..862M 1988LAstr.102..493V 1988MSS...C04....0H 1987Ap&SS.129..353F 1987ApJ...319..407F 1987PAZh...13..589G 1987PN86.......197P 1987RMxAA..14..534P 1986A&A...158..228F 1986A&A...161..363P 1986A&AS...64..579S 1986ApJ...301..772Z 1986ApJ...303..451K 1986ApJ...308..322K 1986ApJ...308..337K 1986ApJ...311..930A 1986RMxAA..12..249M 1985A&A...149..365M 1985Ap&SS.113...59A 1985ApJ...295..537S 1985XXID.........0. 1985XXIE.........0. 1984A&A...130...91P 1984A&A...136..181S 1984A&A...137...92P 1984A&A...138...10P 1984A&AS...55..253M 1984A&AS...58..273S 1984Afz....20..503K 1984Ap&SS.107...19A 1984ApJ...279..304C 1984ApJ...287..945K 1984MNRAS.210..341S 1983A&A...118..107C 1983A&A...122..335F 1983A&A...126...31P 1983A&AS...54..315A 1983ApJ...273..214F 1983ApJS...51..211A 1983ApJS...52..399S 1983IAUS..103..487T 1983MmSAI..54..511C 1983PASP...95..610W 1983S&W....22...68G 1983S&W....22..336G 1982A&AS...50..209M 1982AJ.....87..555F 1982AZh....59..326G 1982Ap&SS..83..225A 1982ApJ...263L..69F 1982BICDS..23...92A 1982IUE82......393F 1982MNRAS.199..141C 1982MNRAS.199..649R 1982PASP...94...43D 1982PSCDS...3....0A 1981A&A....98..328M 1981A&AS...44..325K 1981ApJ...249..201K 1981CRJS..R03...65C 1981SBS80.R....517I 1980A&A....88....1M 1980A&A....89...33A 1980ApJ...239...78K 1980ApJ...239..592K 1980ApJ...241..725F 1980ApJ...242..596N 1980ApJ...242..615K 1980IUE80......613F 1980IUE80......663B 1979A&AS...36..169M 1979Afz....15..269K 1979Ap&SS..62..397A 1979ApJ...228..163K 1979BAAS...11..627E 1979IzKry..59..167G 1979MNRAS.189..701L 1979SvA....23..425P 1978A&AS...33..223S 1978A&AS...33..367A 1978ApJ...225..527K 1978IAUS...76...79G 1978IAUS...76..111T 1978IAUS...76..225A 1977A&A....58L..29M 1977A&AS...30..217A 1977PASP...89..618K 1976AJ.....81..407C 1976AZh....53..534K 1976AZh....53..762K 1976AZh....53..961K 1976ApJ...204..445A 1976ApJS...31..517K 1976MSRSL...9..271A 1976SoSht.195....3K 1976TrSht..47..222K 1975A&A....38..183M 1975A&A....39...43S 1975ApJ...200...83D 1975PW&SO...2a...1S 1974A&A....34..141B 1974AJ.....79.1384C 1974BAAS....6..213L 1974PASP...86..888L 1973A&A....22..469D 1973AJ.....78..239M 1973IAUS...52..237C 1973MNRAS.164..321S 1973MSRSL...5..213H 1973SSTor...5b...1I 1972A&A....18...70G 1972AJ.....77..350T 1972ApJ...172..367G 1972ApJ...176..127H 1972AuJPh..25...91A 1971A&A....10..161G 1971AJ.....76..193S 1971Ap&SS..11..309H 1971ApJS...22..319C 1971BAICz..22..103P 1971IzPul.187....4D 1971MNRAS.153..315H 1971NBSSP.353..161A 1971PAB.....1....1H 1971XXFQ.........0. 1970AZh....47..989K 1970ApJ...160..887K 1970ApJ...161..917A 1970MNRAS.150..359T 1970PN70.........1G 1970PN70........74G 1970PN70........80G 1970PN70.......141G 1970SoSht.166...31A 1970TrSht..40...57V 1969ApJ...155..469K 1969ApJ...155.1117H 1969CoLic..17..271C 1969PASP...81..154K 1969S&T....38..377A 1968ApJ...151..991C 1968ApJ...153...49W 1968IAUS...34...38L 1968IAUS...34...87T 1968IAUS...34..104B 1968IAUS...34..112T 1968IAUS...34..155A 1968IAUS...34..159A 1968IAUS...34..209A 1968IAUS...34..330K 1968IAUS...34..339A 1968MmSAI..39..217B 1967ApJ...148..429T 1967ApJ...149..383K 1967MNRAS.135..139D 1967MNRAS.137..181K 1966MNRAS.132...15H 1965AZh....42..464V 1965AZh....42..543C 1965AuJPh..18..187S 1965BOTor..37..155I 1965XXEC.........0. 1962ApJ...135..371O 1961ApJ...133..471C 1953GCRV..C......0W 1950ApJ...111..279W 1931ZA......2..329Z 1918PLicO..13...55C 1917ApJ....46...24P 1917ApJ....46..175P 1903ApJ....18..218P 1892AN....129..233K Measures (distance:2 herschel:1 ISO:2 IUE:11 velocities:2 ): distance:2herschel:1ISO:2IUE:11velocities:2 Notes (1) : (S) 03-Nov-2015 - bc ref:~ obj:PMN J1943-1409 See also \vizier{VIII/85A/spectra}{Seq= 84687 }{Specfind radio flux densities}. ================================================================================