The adjectival forms of the names of astronomical bodies are not always easily predictable. Attested adjectival forms of the larger bodies are listed below, along with the two small Martian moons; in some cases they are accompanied by their demonymic equivalents, which denote hypothetical inhabitants of these bodies.

For Classical (Greco-Roman) names, the adjectival and demonym forms normally derive from the oblique stem, which may differ from the nominative form used in English for the noun form. For instance, for a large portion of names ending in -s, the oblique stem and therefore the English adjective changes the -s to a -d, -t, or -r, as in Mars–Martian, Pallas–Palladian and Ceres–Cererian;[note 1] occasionally an -n has been lost historically from the nominative form, and reappears in the oblique and therefor in the English adjective, as in Pluto–Plutonian and Atlas–Atlantean.

Many of the more recent or more obscure names are only attested in mythological or literary contexts, rather than in specifically astronomical contexts. Forms ending in -ish or -ine, such as "Puckish", are not included below if a derivation in -an is also attested. Rare forms, or forms only attested with spellings not in keeping with the IAU-approved spelling (such as c for k), are shown in italics.

Note on pronunciation

The suffix -ian is always unstressed: that is, /iən/. The related ending -ean, from an e in the root plus a suffix -an, has traditionally been stressed (that is, /ˈiːən/) if the e is long ē in Latin (or is from ⟨η⟩ ē in Greek); but if the e is short in Latin, the suffix is pronounced the same as -ian. In practice forms ending in -ean may be pronounced as if they were spelled -ian even if the e is long in Latin. This dichotomy should be familiar from the dual pronunciations of Caribbean as /ˌkærɪˈbiːən/ KARR-ə-BEE-ən and /kəˈrɪbiən/ kə-RIB-i-ən.

Generic bodies

NameAdjectiveDemonym
asteroidasteroidal, asteroidicAsterite
cometcometary
cosmos, universecosmic, cosmian, universal
eclipticecliptical, zodiacal
galaxygalactic, galactian
meteoroidmeteoroidal
nebulanebular
planetplanetary, planetic
planetoidplanetoidal
quasarquasaric, quasarian
skycelestial
starastral, sidereal, siderean, stellar
supernovasupernovan

Constellations

Derivative forms of constellations are used primarily for meteor showers. The genitive forms of the constellations are used to name stars. (See List of constellations.) Other adjectival forms are less common.

NameAdjectiveDerivative
AndromedaAndromedanAndromedid
AquariusAquarianAquariid
AriesArianArietid
AurigaAurigalAurigid
BootesBootid
CancerCancerianCancrid
CarinaCarinalCarinid
CapricornCapricornianCapricornid
CentaurusCentaurean, CentaurianCentaurid
CetusCetid
Coma BerenicesComalComa Berenicid
Corona AustrinaCoronalCorona Austrinid
CruxCrucialCrucid
CygnusCygneanCygnid
DoradoDoradid
DracoDraconicDraconid
EridanusEridanid
GeminiGeminianGeminid
Hydra, HydrusHydrid
LeoLeonic, Leonian, LeoneanLeonid
Leo MinorLeo Minorid
LibraLibranLibrid
LyraLyrid
MonocerosMonocerotid
NormaNormid
OphiuchusOphiuchid
OrionOrionid
PavoPavonid
PegasusPegasean, PegasarianPegasid
PerseusPerseid
PhoenixPhoeniceanPhoenicid
PiscesPiscean, PiscianPiscid
Piscis AustrinusPiscis Austrinid
PuppisPuppid
SagittariusSagittarianSagittariid
ScorpiusScorpian, ScorpionicScorpiid
TaurusTaurean, TaurianTaurid
Ursa Major, Ursa MinorUrsalUrsid
VelaVelar, VelicVelid
VirgoVirginal, VirginianVirginid
zodiaczodiacal

Sun

NameAdjectiveDemonym
Sun, Sol, HeliosSolar, Heliacal, Phoebean, PhebeanSolarian

Planets

Planets and planetoids
NameAdjectiveDemonym
CeresCererian,[1] Cererean[2]Cererian
Earth, Terra, Tellus, Gaia, Gaeaearthly, Terran, Terrestrial, Terrene, Tellurian,[3] Telluric, Gaian, GaeanEarthling, Terran, Terrestrial, Tellurian, Earthian, Earther, Earthican
ErisEridian[4]
HaumeaHaumean[5]
JupiterJovian, Jupiterian, ZeusianJovian
MakemakeMakemakean[6]
MarsMartian, Martial, Arean[7]Martian
Mercury;
Hermes (in the evening),
Apollo (in the morning)		Mercurian, Mercurial, Hermean/Hermeian, Cyllenian,[8] CylleneanMercurian, Hermean
NeptuneNeptunian, Neptunial, Poseidean[9]Neptunian
OrcusOrcean,[10] Orcan
PallasPalladian[11]
PlutoPlutonic, PlutonianPlutonian[11]
SaturnSaturnian, Saturnine, Cronian,[9] Kronian,[12] Saturnial[13]Saturnian
SednaSednian[14]
UranusUranian, CaelianUranian
VestaVestian,[15][16] Vestan,[17][18] VestalianVestan, Vestian
Venus;
Hesperus, Vesper (in the evening),
Eosphorus, Phosphorus, Phosphor (in the morning),
Lucifer (in the day)		Venerian, Venusian, Cytherean,[19] Cytherian,[20] Hesperian,[21] Luciferian,[22] Phosphorian,[23] Aphroditan[24]Venusian, Cytherean

Moons

Earth and Mars
NameAdjectiveDemonym
Moon (Luna, Selene)Lunar, Selenian, CynthianLunarian, Selenite
DeimosDeimian[25]
PhobosPhobian[26]
Jupiter
NameAdjective, demonym
CallistoCallistoan,[27] Callistonian[28]
EuropaEuropan[29]
GanymedeGanymedean,[30] Ganymedian
IoIonian[31]
Saturn
NameAdjective, demonym
DioneDionean[32][33]
EnceladusEnceladean,[34][35] Enceladan[36][37]
HyperionHyperionian[38]
IapetusIapetian,[39] Japetian[11]
MimasMimantean,[35] Mimantian,[40]
RheaRhean[41][42]
TethysTethyan[11][43][44]
TitanTitanian /taɪˈteɪniən/,[45][46] Titanean[47]
Uranus
NameAdjective, demonym
ArielArielian[48]
MirandaMirandan,[49] Mirandian[50]
OberonOberonian[51]
TitaniaTitanian /tɪˈtɑːniən/[52]
UmbrielUmbrielian[52]
Neptune, Pluto and Eris
NameAdjective, demonym
TritonTritonian[53]
CharonCharonian[54]
DysnomiaDysnomian

Galaxies

Name Adjective
Milky Way Galaxy Galactic,[55] Lacteal[56]
Andromeda Galaxy Andromedan
Magellanic Clouds Magellanic

See also

Notes

  1. ↑ This is reflected in Russian Паллада Pallada 'Pallas' and Церера Tserera 'Ceres', as well as in Italian Pallade 'Pallas' and Cerere 'Ceres', as in these (and several other) languages the nominal forms of the names often also reflect the oblique. This is not always the case, however – for Mars, Italian Marte parallels the English adjective but Russian Марс Mars parallels the English noun.

References

  1. ↑ Rüpke (2007) A companion to Roman religion
  2. ↑ Booth (1923) Flowers of Roman poesy
  3. ↑ Announcement of the discovery of Astraea in The Eclectic magazine of foreign literature, science, and art, v. 8, p. 279 (1846)
  4. ↑ "David Morrison (2008) Ask an Astrobiologist". Archived from the original on April 25, 2009.
  5. ↑ E.g. Giovanni Vulpetti (2013) Fast Solar Sailing, p. 333.
  6. ↑ Parker, A. H.; Buie, M. W.; Grundy, W. M.; Noll, K. S. (2016-04-25). "Discovery of a Makemakean Moon". The Astrophysical Journal. 825 (1): L9. arXiv:1604.07461. Bibcode:2016ApJ...825L...9P. doi:10.3847/2041-8205/825/1/L9. S2CID 119270442.
  7. ↑ "Schiaparelli on Mars" (1895 [1894]) Nature, v. 51
  8. ↑ Lewis (1888) A Latin dictionary for schools
  9. 1 2 "Enabling Exploration with Small Radioisotope Power Systems" (PDF). NASA. September 2004. Archived from the original (PDF) on 22 December 2016. Retrieved 26 January 2016.
  10. ↑ Angley (1847) De Clifford, the philosopher
  11. 1 2 3 4 Listed in any reasonably complete dictionary
  12. ↑ Müller et al. (2010) Azimuthal plasma flow in the Kronian magnetosphere, J. Geophys. Res. 115, A08203
  13. ↑ Pennsylvania school journal, v. 29 (1880)
  14. ↑ E. N. Slyuta; M. A. Kreslavsky (1990). Intermediate (20-100 KM ) Sized Volcanic Edifices on Venus (PDF). Lunar and planetary science XXI. Lunar and Planetary Institute. p. 1174(for Sedna Planitia){{cite conference}}: CS1 maint: postscript (link)
  15. ↑ Jet Propulsion Laboratory (2010) Dawn Journal, March 28
  16. ↑ Tsiolkovsky (1960) The call of the cosmos
  17. ↑ Meteoritics & planetary science, Volume 42, Issues 6–8, 2007
  18. ↑ Origin and evolution of Earth, National Research Council et al., 2008
  19. ↑ Raitala (1993) "Crustal tectonic zone on Venus", Earth, Moon, and Planets, v. 64, no. 2
  20. ↑ "A theoretical study of the martian and cytherian ionospheres", NASA Technical Reports Server, JPL-TR-32-398
  21. ↑ Goodsell Observatory (1909) Popular astronomy, v. 17
  22. ↑ Duffy (2009) The Constitution of Shelley's Poetry
  23. ↑ Boardman (2001) The poems of Francis Thompson
  24. ↑ Patricia Brace (2011) The Broadview Anthology of Sixteenth-Century Poetry and Prose, p. 607
  25. ↑ Harry Shipman (2013) Humans in Space: 21st Century Frontiers, p. 317
  26. ↑ The Century Dictionary and Cyclopedia (1911)
  27. ↑ Harland (2000) Jupiter odyssey: the story of NASA's Galileo mission
  28. ↑ Monthly notices of the Royal Astronomical Society, v.71, 1911
  29. ↑ Greenberg (2005) Europa: the ocean moon
  30. ↑ Journal of Geophysical Research, v. 95 (1990)
  31. ↑ "Electron Beams and Ion Composition Measured at Io and in Its Torus", Science, 1996 October 18
  32. ↑ Anthon (1849) The Aeneïd of Virgil
  33. ↑ "JPL (2007) Cassini Equinox Mission: Dionean Linea". Archived from the original on 2016-03-03. Retrieved 2010-05-26.
  34. ↑ JBIS: journal of the British Interplanetary Society, v. 36 (1983)
  35. 1 2 "JPL (ca. 2009) Cassini Equinox Mission: Mimas". Archived from the original on 2015-09-05. Retrieved 2010-05-26.
  36. ↑ Lebowitz (1970) Progress into silence: a study of Melville's heroes
  37. ↑ "JPL (2010) Cassini Equinox Mission: Enceladan Tectonics". Archived from the original on 2016-03-04. Retrieved 2010-05-26.
  38. ↑ "JPL (ca. 2008) Cassini Equinox Mission: Hyperion".
  39. ↑ "JPL (ca. 2008) Cassini Equinox Mission: Iapetus". Archived from the original on 2015-03-26. Retrieved 2010-05-26.
  40. ↑ Harrison (1908) Prolegomena to the study of Greek religion, ed. 2
  41. ↑ The Westminster review, v. 140 (1893)
  42. ↑ "JPL (ca. 2008) Cassini Equinox Mission: Rhea". Archived from the original on 2016-04-12. Retrieved 2010-05-26.
  43. ↑ Şengör & Atayman (2009) The Permian extinction and the Tethys
  44. ↑ "Cassini Solstice Mission: Tethys". Archived from the original on 2016-04-04. Retrieved 2010-05-26.
  45. ↑ Anton et al. (1859) A Latin-English and English-Latin dictionary
  46. ↑ JPL (ca. 2008) Cassini Equinox Mission: Huygens Landed with a Splat"Cassini Equinox Mission: Huygens Landed with a Splat". Archived from the original on 2010-06-20. Retrieved 2010-05-26.
  47. ↑ Milton, Hughes (2003) Complete poems and major prose
  48. ↑ DeKoven (1991) Rich and strange: gender, history, modernism
  49. ↑ Journal of Geophysical Research, v. 93 (1988)
  50. ↑ Robertson (1929) The life of Miranda
  51. ↑ Normand (1970) Nathaniel Hawthorne
  52. 1 2 James Hall III (2015) Moons of the Solar System, p. 150
  53. ↑ Bunbury (1883) A history of ancient geography
  54. ↑ Kathryn Bosher (2012) Theater outside Athens: Drama in Greek Sicily and South Italy, pp 100, 104–105
  55. ↑ When capitalized, "Galactic" refers specifically to the Milky Way galaxy.
  56. ↑ The Independent, v. 55, p. 964 (1903)
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