| Commission 51 Members | ||||||
| Modified by C51 11/11/04 | ||||||
| IAU Status | Comm/Div Status | Yr Join | Last Name | First Name | Middle | Country |
| Member Active | Comm - President | MEECH | Karen | J. | United States | |
| Proposed New Member | Comm - Vice President, Org. Cmte | BOSS | Alan | United States | ||
| Member Active | Comm - Organizing Cmte Member | COSMOVICI | Cristiano | Batalli | Italy | |
| Proposed New Member | Comm - Organizing Cmte Member | EHRENFREUND | Pascale | Netherlands | ||
| Proposed New Member | Comm - Organizing Cmte Member | LATHAM | David | United States | ||
| Member Active | Comm - Organizing Cmte Member | MORRISON | David | United States | ||
| Proposed New Member | Comm - Organizing Cmte Member | UDRY | Stephanie | Switzerland | ||
| Proposed New Member | Comm - Member (pending) | BOUCHET | Patrice | Chile | ||
| Proposed New Member | Comm - Member (pending) | CORBET | Robin | United States | ||
| Proposed New Member | Comm - Member (pending) | CUNTZ | Manfred | A. | United States | |
| Proposed New Member | Comm - Member (pending) | STONE | Remington | United States | ||
| Member Active | Comm - Member | ALMAR | Ivan | Hungary | ||
| Member Active | Comm - Member | AL-NAIMIY | Hamid | M.K. | United Arab Emirates | |
| Member Active | Comm - Member | ALSABTI | Abdul Athem | United Kingdom | ||
| Member Active | Comm - Member | ANDO | Hiroyasu | Japan | ||
| Member Active | Comm - Member | BALAZS | Bela | A | Hungary | |
| Member Active | Comm - Member | BALL | John | A | United States | |
| Member Active | Comm - Member | BANIA | Thomas | Michael | United States | |
| Member Active | Comm - Member | BARBIERI | Cesare | Italy | ||
| Member Active | Comm - Member | BASU | Dipak | Canada | ||
| Member Active | Comm - Member | BASU | Baidyanath | India | ||
| Member Active | Comm - Member | BAUM | William | A | United States | |
| Member Active | Comm - Member | BEAUDET | Gilles | Canada | ||
| Member Active | Comm - Member | BECKMAN | John | E | Spain | |
| Member Active | Comm - Member | BECKWITH | Steven | V W | United States | |
| Member Active | Comm - Member | BEEBE | Reta | Faye | United States | |
| Member Active | Comm - Member | BENEST | Daniel | France | ||
| Member Active | Comm - Member | BERENDZEN | Richard | United States | ||
| Member Active | Comm - Member | BERNACCA | Pierluigi | Italy | ||
| Member Active | Comm - Member | BILLINGHAM | John | United States | ||
| Member Active | Comm - Member | BIRAUD | Francois | France | ||
| Member Active | Comm - Member | BLESS | Robert | C | United States | |
| Member Active | Comm - Member | BOWYER | C. | Stuart | United States | |
| Member Active | Comm - Member | BOYCE | Peter | B | United States | |
| Member Active | Comm - Member | BRACEWELL | Ronald | N | United States | |
| Member Active | Comm - Member | BRODERICK | John | United States | ||
| Member Active | Comm - Member | BROWN | Ronald | D | Australia | |
| Member Active | Comm - Member | BURKE | Bernard | F. | United States | |
| Member Active | Comm - Member | CALVIN | William | H | United States | |
| Member Active | Comm - Member | CAMPUSANO | Luis | E | Chile | |
| Member Active | Comm - Member | CARLSON | John | B | United States | |
| Member Active | Comm - Member | CARR | Thomas | D | United States | |
| Member Active | Comm - Member | CHAISSON | Eric | J | United States | |
| Member Active | Comm - Member | CHOU | Kyong | Chol | Korea RP | |
| Member Active | Comm - Member | CLARK | Thomas | A | United States | |
| Member Active | Comm - Member | COLOMB | Fernando | R. | Argentina | |
| Member Active | Comm - Member | CONNES | Pierre | France | ||
| Member Active | Comm - Member | 2003 | COUD╔ DU FORESTO | Vincent | France | |
| Member Active | Comm - Member | COUPER | Heather | United Kingdom | ||
| Member Active | Comm - Member | DAIGNE | Gerard | France | ||
| Member Active | Comm - Member | DAVIS | Michael | M | United States | |
| Member Active | Comm - Member | DAWE | John | Alan | Australia | |
| Member Active | Comm - Member | DE GRAAFF | W. | Netherlands | ||
| Member Active | Comm - Member | DE JAGER | Cornelis | K. | Netherlands | |
| Member Active | Comm - Member | DE JONGE | J | K | United States | |
| Member Active | Comm - Member | DE LOORE | Camiel | Belgium | ||
| Member Active | Comm - Member | DE VINCENZI | Donald | United States | ||
| Member Active | Comm - Member | 2003 | DEEG | Hans | Spain | |
| Member Active | Comm - Member | DELSEMME | Armand | H | United States | |
| Member Active | Comm - Member | DICK | Steven | J | United States | |
| Member Active | Comm - Member | DIXON | Robert | S | United States | |
| Member Active | Comm - Member | DORSCHNER | Johann | Germany | ||
| Member Active | Comm - Member | DOUBINSKIJ | Boris | A | Russian Federation | |
| Member Active | Comm - Member | DOWNS | George | S | United States | |
| Member Active | Comm - Member | DRAKE | Frank | D | United States | |
| Member Active | Comm - Member | 2003 | DUTIL | Yvan | Canada | |
| Member Active | Comm - Member | DYSON | Freeman | J | United States | |
| Member Active | Comm - Member | ECCLES | Michael | J | United Kingdom | |
| Member Active | Comm - Member | ELLIS | George | F.R. | South Africa | |
| Member Active | Comm - Member | EPSTEIN | Eugene | E | United States | |
| Member Active | Comm - Member | EVANS | Neal | J. | United States | |
| Member Active | Comm - Member | FAZIO | Giovanni | G. | United States | |
| Member Active | Comm - Member | FEJES | Istvan | Hungary | ||
| Member Active | Comm - Member | FELDMAN | Paul | A | Canada | |
| Member Active | Comm - Member | FIELD | George | B | United States | |
| Member Active | Comm - Member | FIRNEIS | Maria | G | Austria | |
| Member Active | Comm - Member | FIRNEIS | Friedrich | J | Austria | |
| Member Active | Comm - Member | FISHER | Philip | C | United States | |
| Member Active | Comm - Member | FREDRICK | Laurence | W | United States | |
| Member Active | Comm - Member | FREIRE FERRERO | Rubens | G | France | |
| Member Active | Comm - Member | FUJIMOTO | Masa-Katsu | Japan | ||
| Member Active | Comm - Member | GATEWOOD | George | United States | ||
| Member Active | Comm - Member | GEHRELS | Tom | United States | ||
| Member Active | Comm - Member | GHIGO | Frank | D | United States | |
| Member Active | Comm - Member | GINZBURG | Vitalij | L | Russian Federation | |
| Member Active | Comm - Member | GIOVANNELLI | Franco | Italy | ||
| Member Active | Comm - Member | GODOLI | Giovanni | Italy | ||
| Member Active | Comm - Member | GOLDEN | Aaron | Ireland | ||
| Member Active | Comm - Member | GOLDSMITH | Donald | W. | United States | |
| Member Active | Comm - Member | GOTT | J | Richard | United States | |
| Member Active | Comm - Member | GOUDIS | Christos | D. | Greece | |
| Member Active | Comm - Member | GREGORY | Philip | C | Canada | |
| Member Active | Comm - Member | GULKIS | Samuel | United States | ||
| Member Active | Comm - Member | GUNN | James | E | United States | |
| Member Active | Comm - Member | HADDOCK | Fred | T | United States | |
| Member Active | Comm - Member | HAISCH | Bernard | Michael | United States | |
| Member Active | Comm - Member | HAJDUK | Anton | Slovakia | ||
| Member Active | Comm - Member | HALE | Alan | United States | ||
| Member Active | Comm - Member | HARRISON | Edward | R | United States | |
| Member Active | Comm - Member | HART | Michael | H | United States | |
| Member Active | Comm - Member | HECK | Andre | France | ||
| Member Active | Comm - Member | HEESCHEN | David | S | United States | |
| Member Active | Comm - Member | HERCZEG | Tibor | J | United States | |
| Member Active | Comm - Member | HERSHEY | John | L | United States | |
| Member Active | Comm - Member | HEUDIER | Jean-Louis | France | ||
| Member Active | Comm - Member | HINNERS | Noel | W | United States | |
| Member Active | Comm - Member | HIRABAYASHI | Hisashi | Japan | ||
| Member Active | Comm - Member | HOANG | Binh | Dy | France | |
| Member Active | Comm - Member | HOGBOM | Jan | A | Sweden | |
| Member Active | Comm - Member | HOLLIS | Jan | Michael | United States | |
| Member Active | Comm - Member | 2003 | HOLM | Nils | G. | Sweden |
| Member Active | Comm - Member | HOROWITZ | Paul | United States | ||
| Member Active | Comm - Member | HUNTEN | Donald | M | United States | |
| Member Active | Comm - Member | HUNTER | James | H | United States | |
| Member Active | Comm - Member | HYSOM | Edmund | J | United Kingdom | |
| Member Active | Comm - Member | IDLIS | Grigorij | M | Russian Federation | |
| Member Active | Comm - Member | IRVINE | William | M | United States | |
| Member Active | Comm - Member | ISRAEL | Frank | P. | Netherlands | |
| Member Active | Comm - Member | JASTROW | Robert | United States | ||
| Member Active | Comm - Member | JEFFERS | Stanley | Canada | ||
| Member Active | Comm - Member | JENNISON | Roger | C | United Kingdom | |
| Member Active | Comm - Member | JONES | Eric | M | United States | |
| Member Active | Comm - Member | JUGAKU | Jun | Japan | ||
| Member Active | Comm - Member | KAFATOS | Menas | United States | ||
| Member Active | Comm - Member | KAPISINSKY | Igor | Slovakia | ||
| Member Active | Comm - Member | KARDASHEV | Nicolay | S. | Russian Federation | |
| Member Active | Comm - Member | KAUFMANN | Pierre | Brazil | ||
| Member Active | Comm - Member | KEAY | Colin | S l | Australia | |
| Member Active | Comm - Member | KELLER | Hans- | Ulrich | Germany | |
| Member Active | Comm - Member | KELLERMANN | Kenneth | I. | United States | |
| Member Active | Comm - Member | 2003 | KILSTON | Steven | D. | United States |
| Member Active | Comm - Member | KLEIN | Michael | J | United States | |
| Member Active | Comm - Member | KNOWLES | Stephen | H. | United States | |
| Member Active | Comm - Member | KOCER | Durcun | Turkey | ||
| Member Active | Comm - Member | KOCH | Robert | H | United States | |
| Member Active | Comm - Member | KOEBERL | Christian | Austria | ||
| Member Deceased | Comm - Member | KRAUS | John | D | United States | |
| Member Active | Comm - Member | KSANFOMALITY | Leonid | V | Russian Federation | |
| Member Active | Comm - Member | KUIPER | Thomas | B.H. | United States | |
| Member Active | Comm - Member | KUZMIN | Arkadij | D | Russian Federation | |
| Member Active | Comm - Member | LAFON | Jean-Pierre | J. | France | |
| Member Active | Comm - Member | LAQUES | Pierre | France | ||
| Member Active | Comm - Member | LEE | Sang | Gak | Korea RP | |
| Member Active | Comm - Member | LEGER | Alain | France | ||
| Member Active | Comm - Member | LEVASSEUR-REGOURD | A.-C. | France | ||
| Member Active | Comm - Member | LILLEY | Edward | A | United States | |
| Member Active | Comm - Member | LIPPINCOTT ZIMMERMAN | Sarah | Lee | United States | |
| Member Active | Comm - Member | LOVELL | Sir | Bernard | United Kingdom | |
| Member Active | Comm - Member | MAFFEI | Paolo | Italy | ||
| Member Active | Comm - Member | MARGRAVE JR | Thomas | E. | United States | |
| Member Active | Comm - Member | MAROV | Mikhail | Ya | Russian Federation | |
| Member Active | Comm - Member | MARTIN | Maria | C. | Argentina | |
| Member Active | Comm - Member | MARTIN | Anthony | R | United Kingdom | |
| Member Active | Comm - Member | MATSAKIS | Demetrios | N. | United States | |
| Member Active | Comm - Member | MATSUDA | Takuya | Japan | ||
| Member Active | Comm - Member | MATTHEWS | Clifford | United States | ||
| Member Active | Comm - Member | MAVRIDIS | Lyssimachos | N. | Greece | |
| Member Active | Comm - Member | MAYOR | Michel | Switzerland | ||
| Member Active | Comm - Member | MCALISTER | Harold | A | United States | |
| Member Active | Comm - Member | MCDONOUGH | Thomas | R | United States | |
| Member Active | Comm - Member | MENDOZA | V | Eugenio E | Mexico | |
| Member Active | Comm - Member | MINN | Young | Key | Korea RP | |
| Member Active | Comm - Member | MIRABEL | Igor | Felix | France | |
| Member Active | Comm - Member | 2003 | MOKHELE | Khotso | D. | South Africa |
| Member Active | Comm - Member | MORIMOTO | Masaki | Japan | ||
| Member Active | Comm - Member | MOROZ | Vasilij | I | Russian Federation | |
| Member Active | Comm - Member | MORRIS | Mark | Root | United States | |
| Member Active | Comm - Member | MORRISON | Philip | United States | ||
| Member Active | Comm - Member | MULLER | Richard | A. | United States | |
| Member Active | Comm - Member | NAKAGAWA | Yoshinari | Japan | ||
| Member Active | Comm - Member | NELSON | Robert | M | United States | |
| Member Active | Comm - Member | NIARCHOS | Panayiotis | Greece | ||
| Member Active | Comm - Member | NORRIS | Raymond | Paul | Australia | |
| Member Active | Comm - Member | OLLONGREN | A. | Netherlands | ||
| Member Active | Comm - Member | OSTRIKER | Jeremiah | P. | United States | |
| Member Active | Comm - Member | OWEN | Tobias | C | United States | |
| Member Active | Comm - Member | PACINI | Franco | Italy | ||
| Member Active | Comm - Member | PARIJSKIJ | Yurij | N | Russian Federation | |
| Member Active | Comm - Member | PASINETTI | Laura | E | Italy | |
| Member Active | Comm - Member | PEREK | Lubos | Czech Rep | ||
| Member Active | Comm - Member | PONSONBY | John | E.B. | United Kingdom | |
| Member Active | Comm - Member | QIU | Yaohui | China, Nanjing | ||
| Member Active | Comm - Member | QUINTANA | Hernan | Chile | ||
| Member Active | Comm - Member | QUINTANA | Jose | M | Spain | |
| Member Active | Comm - Member | QUIRRENBACH | Andreas | Netherlands | ||
| Member Active | Comm - Member | RAGHAVAN | Nirupama | India | ||
| Member Active | Comm - Member | RAJAMOHAN | R | India | ||
| Member Active | Comm - Member | REAY | Newrick | K | United Kingdom | |
| Member Active | Comm - Member | REES | Martin | J | United Kingdom | |
| Member Active | Comm - Member | RIIHIMAA | Jorma | J. | Finland | |
| Member Active | Comm - Member | ROBINSON | Leif | J. | United States | |
| Member Active | Comm - Member | RODRIGUEZ | Luis | F. | Mexico | |
| Member Active | Comm - Member | ROOD | Robert | T | United States | |
| Member Active | Comm - Member | ROWAN-ROBINSON | Michael | United Kingdom | ||
| Member Active | Comm - Member | RUBIN | Robert | Howard | United States | |
| Member Active | Comm - Member | RUSSELL | Jane | L | United States | |
| Member Active | Comm - Member | SAKURAI | Kunitomo | Japan | ||
| Member Active | Comm - Member | SANCISI | Renzo | Italy | ||
| Member Active | Comm - Member | SCARGLE | Jeffrey | D | United States | |
| Member Active | Comm - Member | SCHATZMAN | Evry | France | ||
| Member Active | Comm - Member | SCHILD | Rudolph | E | United States | |
| Member Active | Comm - Member | SCHNEIDER | Jean | France | ||
| Member Active | Comm - Member | SCHOBER | Hans | J. | Austria | |
| Member Active | Comm - Member | SCHUCH | Nelson | Jorge | Brazil | |
| Member Active | Comm - Member | SEEGER | Charles | Louis III | United States | |
| Member Active | Comm - Member | SEIELSTAD | George | A | United States | |
| Member Active | Comm - Member | SEIRADAKIS | John | Hugh | Greece | |
| Member Active | Comm - Member | SHAPIRO | Maurice | M | United States | |
| Member Active | Comm - Member | SHEN | Chun-Shan | China, Taipei | ||
| Member Active | Comm - Member | SHOSTAK | G | Seth | United States | |
| Member Active | Comm - Member | SINGH | Harinder | P. | India | |
| Member Active | Comm - Member | SIVARAM | C | India | ||
| Member Active | Comm - Member | SLYSH | Vyacheslav | I | Russian Federation | |
| Member Active | Comm - Member | SNYDER | Lewis | E | United States | |
| Member Active | Comm - Member | SOFUE | Yoshiaki | Japan | ||
| Member Active | Comm - Member | STALIO | Roberto | Italy | ||
| Member Active | Comm - Member | STEIN | John | William | United States | |
| Member Active | Comm - Member | STRAIZYS | Vytautas | P. | Lithuania | |
| Member Active | Comm - Member | STURROCK | Peter | A. | United States | |
| Member Active | Comm - Member | SULLIVAN | Woodruff | T | United States | |
| Member Active | Comm - Member | TAKABA | Hiroshi | Japan | ||
| Member Active | Comm - Member | TAKADA-HIDAI | Masahide | Japan | ||
| Member Active | Comm - Member | TARTER | Jill | C | United States | |
| Member Active | Comm - Member | TAVAKOL | Reza | United Kingdom | ||
| Member Active | Comm - Member | TEDESCO | Edward | F. | United States | |
| Member Active | Comm - Member | TEJFEL | Viktor | G | Kazakhstan | |
| Member Active | Comm - Member | TERZIAN | Yervant | United States | ||
| Member Active | Comm - Member | THADDEUS | Patrick | United States | ||
| Member Active | Comm - Member | TOLBERT | Charles | R. | United States | |
| Member Active | Comm - Member | TORO | Tibor | Romania | ||
| Member Active | Comm - Member | TOVMASSIAN | Hrant | M | Mexico | |
| Member Active | Comm - Member | TOWNES | Charles | Hard | United States | |
| Member Active | Comm - Member | TRIMBLE | Virginia | L. | United States | |
| Member Active | Comm - Member | TURNER | Edwin | L | United States | |
| Member Active | Comm - Member | TURNER | Kenneth | C | United States | |
| Member Active | Comm - Member | VALLEE | Jacques | P. | Canada | |
| Member Active | Comm - Member | VALTAOJA | Leena | Finland | ||
| Member Active | Comm - Member | VAN FLANDERN | Tom | United States | ||
| Member Active | Comm - Member | VARSHALOVICH | Dmitrij | A | Russian Federation | |
| Member Active | Comm - Member | VAUCLAIR | Gerard | P. | France | |
| Member Active | Comm - Member | VAZQUEZ | Manuel | Spain | ||
| Member Active | Comm - Member | VENUGOPAL | V. | R. | United States | |
| Member Active | Comm - Member | VERSCHUUR | Gerrit | L. | United States | |
| Member Active | Comm - Member | VOGT | Nikolaus | Germany | ||
| Member Active | Comm - Member | WALLIS | Max | K | United Kingdom | |
| Member Active | Comm - Member | WATSON | Frederick | Garnett | Australia | |
| Member Active | Comm - Member | WELCH | William | J. | United States | |
| Member Active | Comm - Member | WELLINGTON | Kelvin | Australia | ||
| Member Active | Comm - Member | WESSON | Paul | S | Canada | |
| Member Active | Comm - Member | WETHERILL | George | W | United States | |
| Member Active | Comm - Member | WIELEBINSKI | Richard | Germany | ||
| Member Active | Comm - Member | WILLIAMS | Iwan | P. | United Kingdom | |
| Member Active | Comm - Member | WILLSON | Robert | Frederick | United States | |
| Member Active | Comm - Member | WILSON | Thomas | L | United States | |
| Member Active | Comm - Member | WOLSTENCROFT | Ramon | D | United Kingdom | |
| Member Active | Comm - Member | WRIGHT | Ian | P | United Kingdom | |
| Member Active | Comm - Member | WRIGHT | Alan | E | Australia | |
| Member Active | Comm - Member | 2003 | XU | Weibiao | China, Nanjing | |
| Member Active | Comm - Member | YE | Shuhua | China, Nanjing | ||
| Member Active | Comm - Member | ZUCKERMAN | Ben | M. | United States | |
| Consultant Active | Comm - Consultant | AUMANN | H. | H. | United States | |
| Consultant Active | Comm - Consultant | CLARKE | Arthur | C. | Sri Lanka | |
| Consultant Active | Comm - Consultant | CSANYI | Vilmos | Hungary | ||
| Consultant Active | Comm - Consultant | CULLERS | Kent | D | United States | |
| Consultant Active | Comm - Consultant | FERRIS | James | United States | ||
| Consultant Active | Comm - Consultant | FINNEY | Ben | R | United States | |
| Consultant Active | Comm - Consultant | FOX | Sydney | W | United States | |
| Consultant Active | Comm - Consultant | FRIEDMAN | Louis | United States | ||
| Consultant Active | Comm - Consultant | GINDILIS | Lev | M | Russian Federation | |
| Consultant Active | Comm - Consultant | GOULD | Stephen | Jay | United States | |
| Consultant Active | Comm - Consultant | KNOLL | Andrew | United States | ||
| Consultant Active | Comm - Consultant | LINSCOTT | Ivan | United States | ||
| Consultant Active | Comm - Consultant | MARK | Hans | United States | ||
| Consultant Active | Comm - Consultant | MILLER | Stanley | United States | ||
| Consultant Active | Comm - Consultant | MUELLER | George | E | United States | |
| Consultant Active | Comm - Consultant | MUKHIN | Lev | M | Russian Federation | |
| Consultant Active | Comm - Consultant | MURRAY | Bruce | C | United States | |
| Consultant Active | Comm - Consultant | OLSEN | Edward | T | United States | |
| Consultant Active | Comm - Consultant | OOSHIMA | Tairo | Japan | ||
| Consultant Active | Comm - Consultant | ORGEL | Leslie | United States | ||
| Consultant - Deceased | Comm - Consultant | ORO | J | United States | ||
| Consultant Active | Comm - Consultant | PAL | Yash | India | ||
| Consultant Active | Comm - Consultant | PETERSON | Allen | United States | ||
| Consultant Active | Comm - Consultant | PILBEAM | David | United States | ||
| Consultant Active | Comm - Consultant | SCHIDLOWSKI | Manfred | Germany | ||
| Consultant Active | Comm - Consultant | SCHOPF | William | J | United States | |
| Consultant Active | Comm - Consultant | SEPKOSKI JR | John | United States | ||
| Consultant Active | Comm - Consultant | SOLBRIG | Otto | United States | ||
| Consultant Active | Comm - Consultant | STAELIN | David | H | United States | |
| Consultant Active | Comm - Consultant | WERTHIMER | Dan | United States | ||
| Consultant Active | Comm - Consultant | WILSON | Edward | O | United States | |
| Consultant Active | Comm - Consultant | WOLFE | John | H | United States | |