Pronouncing Celestial Names
 
Following is a guide (updated October 2005) for pronunciation of celestial names or astronomical terms. These have been suggested by the Edmund Sky Guide, authored by Terence Dickinson and Sam Brown, plus additional entries from other sources including the GoldenPress Skyguide, the American Heritage College Dictionary and the Associated Press Stylebook. In cases where the dictionary accepts more than one sounding of a word, I’ve chosen the first of them.
 
And a further note: Uses of style are varied. For example, the Dictionary uses lower-case (small letter) form for “sun” and “moon,” but upper-case (capital) letters for Martian, Jovian, Saturnian, etc. Astronomy does the opposite, writing: Sun, Moon, martian, jovian, etc. Skyguide and Sky & Telescope will capitalize both Martian (Jovian, etc.) and Sun and Moon. And, The Associated Press and its affiliate newspapers may lower-case all: sun, moon, martian, jovian, etc.

--- Larry Pratt

 

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NAME
PRONOUNCATION
DESCRIPTION
   
Acamar AKE-uh-mar  theta star (8th-brightest) in Eridanus
Achernar AKE-er-nar  southern anchor star of Eridanus
Adhara add-DARE-a star at foot of Canis Major
Algieba  al-JEE-ba gamma (4th-brt) star in neck of Leo
Al Nair al-NARR alpha (1st) star in constellation Grus
Albireo  al-BEER-ee-o famed binary is foot of Cygnus' cross
Alcor AL-core faintly seen with Mizar in Big Dipper
Aldebaran al-DEBB-uh-ran alpha star of Taurus, near the Hyades
Alcyone al-SIGH-o-nee bright member of Taurus' Pleiades cluster
Alderamin al-DARE-uh-min alpha star of northern sky's Cepheus
Algenib  al-JEE-nib alpha star of Perseus; near Algol
Algol AL-gall famous eclipsing binary in Perseus
Alioth ALLEY-awth third from the end of Big Dipper's handle
Alkaid al-KADE star at end of Big Dipper's handle
Almach  AL-mack Andromeda's gamma star (4th-brightest)
Alnilam AL-nih-lam middle star of three in Orion's belt
Alnitak AL-nih-tack first (left) star in Orion's belt
Alpha Centauri AL-fa  sen-TORE-rye trio of stars is nearest, at 4.4 light-years
Alphecca al-FECK-a (or, Gemma) is Corona Borealis' brightest
Alpheratz  al-FEAR-ats alpha star in Andromeda's big “V”
Altair  al-TAIR alpha star in Aquila constellation
Andromeda an-DROM-ed-da spiral galaxy, biggest in our Local Group
Antares an-TAIR-eez red giant star, the “heart” of Scorpius
aphelion af-FEE-leon an orbit's point farthest from the sun
apogee                           the outermost distance of moon or other body in Earth orbit
Aquarius ack-QUAIR-ee-us one of the familiar zodiac constellations
Aquila ACK-will-a this const. straddles the celestial equator
Arcturus ark-TOOR-us in Boötes; 4th-brightest star in night sky
Ariel AR-ree-el one of Uranus' moons
Aries AIR-eez a small constellation west of Taurus
Auriga oh-RYE-ga crown-shaped const., in Winter Hexagon
autumnal equinox        about Sept. 22, when sun crosses celestial equator; fall season starts
Bellatrix bell-LAY-trix across from Betelgeuse, corner of Orion
Betelgeuse BET-el-jooz (many say “Beetlejuice”), in Orion
bolide     BO-lide a meteor’s explosive fireball
Boötes bo-OH-teez big const., between UMa and Cas
Camelopardalis ca-MELL-o-PAR-da-liss it lies between UMa and Cas
Canes Venatici  KAY-neez  ven-AT-iss-sigh home of the star Cor Caroli
Canis Major  KAY-niss  MAY-jer southern part of Winter Hexagon
Canopus  can-OH-pus in Carina, hugging southern horizon
Capella ka-PELL-a  in Auriga at top of Winter Hexagon
Caph  KAFF top-right end star of Cassiopeia's “W”
Capricornus cap-rick-CORN-us bib-shaped const. east of Sagittarius
Carina ka-RYE-na we see just the top, in our southern sky
Castor KASS-ter the twin to brighter Pollux, in Gemini
Cassiopeia kass-see-oh-PEE-a const. is a “W,” or sometimes an “M”
Centaurus sen-TOR-us we see its top, but not Proxima Centauri
Cepheus SEE-fee-us far northern const., 'tween Cas & Draco
Cetus SEE-tus fairly big const., west of Taurus
Charon KAR-onn largest moon orbiting Pluto
Coma Berenices KO-ma  bear-en-EYE-sees very rich in galaxies, this constellation
Cor Caroli kor  CARE-o-lie a famous and rare variable star
Corona Borealis kor-O-na  bor-ee-ALICE small but pretty “Northern Crown
Corvus KOR-vus small constellation south of Virgo
Cygnus SIG-nus Northern Cross; many nebulae are here
data DAY-ta
is preferred over “datta” by dictionary
Delphinus dell-FINE-us here's home of Sualocin and Rotanev
Delta Cephei DELL-ta  SEE-fee-eye it's prototype of all variable stars
Deneb DEN-ebb bright top star of Northern Cross
Denebola den-EBB-ola tail-end star of Leo the Lion
Draco DRAY-ko big const., almost surrounds Polaris
Dschubba JOO-ba middle of 3 stars at “head” of Scorpius
Dubhe DOO-bee alpha star is Big Dipper's pouring end
Eltanin el-TAY-nin marks “Dragon's head” of Draco
El Nath el  NATH “horn tip” at end of Taurus' upper arm
Enceladus en-SELL-a-dus one of Saturn's moons
Enif ENN-if the nose of Pegasus' “winged horse”
Equuleus ek-KWOO-lee-us “The Colt” lies near Pegasus, of course
Eridanus eh-RID-a-nus “River,” runs from Orion to Hydrus
Fomalhaut FOAM-a-lawt nice alignment star, low in southern sky
gegenschein                 a faint glow in the low twilight sky, opposite the sun’s position
Gemini JEM-in-eye home of “twins” Pollux and Castor
globular GLOB-yu-ler (not “globe”) clusters are spherical
Greenwich time GREN-itch same as Universal time, or Zulu time
Hamal HAMM-el alpha star of small constellation Aries
Hyades HIGH-a-deez cluster sits far away behind Aldebaran
Iapetus eye-YAP-ituss one of Saturn's moons
Jovian                             of or related to Jupiter; capital   “J” preferred by College Dictionary
Kaus Australis KOSS  oss-TRAY-liss the Teapot's lower-front star, in Sgr
Kochab KOE-kab lower front star in Little Dipper
Lacerta la-SIR-ta a zig-zag star line west of Andromeda
Lepus LEE-pus  small constellation just west of Sirius
Libra LEE-bra constellation west of Scorpius
libration lye-BRAY-shun very slow oscillation of a satellite body
linear LINN-ear relates to straight lines or one dimension
Lupus LOO-pus a far southern const., below Scorpius
Lyra LYE-ra home of Vega and the Ring Nebula
Lysithea lye-SITH-ia one of Jupiter's moons
magnetosphere mag-NEE-toe-sphere
where Earth’s magnetic field has effect
Markab MAR-keb southwest corner of the Great Square
Martian                           is capitalized or not, depending on a publisher’s chosen style
Megrez MEE-grez front end of Big Dipper's handle
Menkar MEN-kar alpha star of Cetus, west of Taurus
Menkalinan men-KAL-in-nan to Capella's left, in Auriga
Merak MEE-rak lower front star of Big Dipper
Metis MEE-tis one of Jupiter's moons
Mintaka min-TA-ka right-end, 3rd star of Orion's Belt
Mira MY-ra Cetus' famous long-period variable star
Mirfak MURR-fack another name for Perseus' Algenib
Mirzam MURR-zam like a “wingman” to the right of Sirius
Mizar MY-zer double star next-to-end of Dipper handle
Monoceros mon-OSS-er-us a nice constellation just east of Orion
moon                              the dictionary and the AP Stylebook both go for lower-case “m”
Neptunian                      is capitalized or not, depending on a publisher’s chosen style         
nuclear NOO-clear
sometimes mis-pronounced
Nunki NUN-key bright star, the top of Teapot's handle
Ophiuchus off-fee-YOU-kus big constellation above Sgr and Sco
Orion o-RYE-un great nebula & const. in Winter Hexagon
Pegasus PEG-a-sus its Great Square isn't hard to find
penumbra                      fainter shadow outside an umbral (fullest) eclipse of the moon
perigee                           an orbiting body’s  position when closest to Earth’s surface
perihelion PAIR-ih-HEE-leon orbital point nearest to the sun
Perseus PURR-see-us “wishbone” figure, is home of Algol
Phact FACT star in far southern Columba
Phecda FECK-da lower back corner of Big Dipper
Pisces PIE-seez big constellation east & south of Pegasus
Piscis Austrinus PIE-sis  oss-TRY-nus Fomalhaut's turf, in low southern sky
Pleiades PLEE-a-deez many of us prefer: “PLAY-a-deez”
Polaris po-LAR-iss or, po-LAIR-iss: It's the North Star
Pollux PAUL-lux Castor's brighter twin star in Gemini
Procyon PRO-see-on in Canis Major, part of Winter Hexagon
Puppis PUP-iss “The Poop” deck, as part of a freighter
Quaoar KWA-wahr Kuiper Belt object that some call "the 10th planet"
Rasalgethi rass-el-GEE-thee that's the alpha star in Hercules....
Rasalhague rass-el-HAIG-wee ....and its neighbor in Ophiuchus
Rhea REE-ya one of Saturn's moons
Rigel RYE-jell lower-right star of Orion's “hourglass”
Sabik SAY-bik begins the tail of Ophiuchus “kite”
Sadr SADDER is heart of Cygnus' Northern Cross
Sagitta sa-JIT-ta small const., just east of Hercules
Sagittarius saj-it-TAIR-ee-us big southern home of Teapot asterism
Saiph SAW-eef or: SAFE, lower-left corner of Orion
Schedar SHEDDER bottom-right star in Cassiopeia
Scheat SHEE-at upper-right corner of Great Square
Scorpius SKOR-pee-us big, easy find, home of Antares
Scutum SKOO-tum small const., home of Wild Duck Cluster
Shaula SHAW-la lambda star at end of Scorpius' tail
sidereal time sye-DEER-ree-al Earth's rotation against background stars
Sinope sin-OH-pee another of Jupiter's satellites
Sirius SEER-ee-us Siriusly, it's brightest star in night sky
Spica SPIKE-a we easily “spike to Spica” in Virgo
status STAY-tuss (hearing "stattus" is our favorite peeve)
summer solstice       about June 22,northernmost sun moves southward; start of summer
sun                          is capitalized or not, depending on a publisher's chosen style
Tarazed TAR-uh-zed just above-right of Altair in Aquila
Taurus TOR-us home of the Hyades and Pleiades
Thuban THOO-ban in Draco; this once was the North Star
Titania tit-TAIN-ia another of Uranus' satellites
Uranus YOU-ran-us seventh planet often is mispronounced
Vega VAY-ga (or VEE-ga) in Lyra, it's 26 lt-yrs away
Vela VAY-la (or VEE-la) is a southern constellation
Venusian                        is capitalized or not, depending on a publisher’s chosen style
vernal equinox               about March 21, spring begins, sun crosses equator northbound
Virgo VIR-go home of galaxies: Virgo-Coma Cluster
Vulpecula vul-PECK-you-la this const. is home of Dumbbell Nebula
Wezen WEE-zen bright star, 2,000 lt-yrs away in CMa
winter solstice               about December 22,  sun farthest south, starts northward; winter
Xena ZEE-na large object discovered in the Kuiper Belt in 2002
zodiacal light                 the reflection of sunlight from dust, near the plane of the ecliptic
Zubenelgenubi zoo-ben-ell-jen-NEW-bee the lower bright one, in Libra
Zubeneschemali zoo-ben-ess-sha-MAY-lee ...and the upper one, in Libra