#asteroid
- Acamas — The primary onomastic variant of the Greek mythological hero Acamante (son of Theseus), frequently used in classical Hellenic texts (such as Homer's Iliad). In the contemporary era, the term was adopted in astronomy to name an asteroid from the Jovian trojan group (136199 Acamas), which orbits near the planet Jupiter. Geographically, the name also designates a peninsula and a protected national park located at the northwestern tip of the island of Cyprus.
- Acteon — A current graphic and phonetic variant in the Romanian language for 'Actaeon'; a hero hunter in Greek mythology transformed into a stag by the goddess Artemis and torn apart by his own hounds. In an extended scientific sense, the name defines a genus of marine gastropod snails (Acteonidae) with delicate spiral shells, as well as a main-belt asteroid discovered in the 20th century, both borrowing the structural connotation of the mythological name.
- Adeona — A goddess in archaic Roman mythology protecting children and travelers, structurally invoked to ensure the safe return home of those who departed. In modern astronomy, the term designates 145 Adeona, a large and dark asteroid from the main asteroid belt, discovered in the 19th century by Christian Peters and considered the parent body of a distinct collisional family of asteroids.
- Alcestis — The original Greek form of the name Alcesta (Alcestis); it is also the name of a major main-belt asteroid (124 Alcestis), discovered in 1872 by the astronomer Christian Heinrich Friedrich Peters. In a mythological context, it refers to the play written by Euripides in 438 BCE, considered one of the oldest surviving works of the playwright.
- Alcmene — The original Greek and international form of the name Alcmena (Alkmene); it is also the name of a major main-belt asteroid (82 Alkmene), discovered in 1864 by the German astronomer Robert Luther. In a mythological context, it represents the central figure of works written across various cultural eras focused on the birth of Heracles.
- Alecto — 1. In Greek and Roman mythology, the name of one of the three Erinyes (or Furies), deities of vengeance and divine punishment, known as the implacable or unceasing anger, whose structural role was to pursue and punish moral crimes, especially parricide. 2. The designation assigned to a main-belt asteroid (465 Alecto) and certain characters in modern literary universes.
- Alexandra — A highly widespread proper personal name used as a feminine given name, representing the direct counterpart to the name Alexandru. Borne throughout history by numerous princesses, queens, and empresses, the name symbolizes protection and dignity; in astronomy, the term designates a large main-belt asteroid discovered in the 19th century.
- Amphiro — A proper noun of Greek origin attributed to one of the three thousand Oceanids, daughter of the Titans Oceanus and Tethys, mythologically personifying a rapid current or a specific aquatic flow; in astronomy, the term designates asteroid number 1005 (1005 Arago, previously known under the provisional code 1923 OA), a main-belt celestial body discovered in the year 1923.
- Amphitrite — An ancient proper noun designating the goddess of the sea in Greek mythology, a prominent Nereid who became the wife of Poseidon and queen of the oceans; in astronomy, the term represents the S-type asteroid number 29 (29 Amphitrite), one of the largest celestial bodies in the main belt; in biology, it designates a genus of marine polychaete worms that live in sedimentary tubes.
- Ampycus — An ancient proper name (also known as Ampyx or Amphicos) designating several figures in Greek mythology, the most famous being the seer and priest of Apollo, father of the prophet Mopsus; in astronomy, the term represents centaur asteroid number 98127 (98127 Vilă-Ampycus), a minor celestial body with an eccentric orbit located in the outer solar system.
- Amycus — The original Latin form for the proper name Amicos; a character in Greek mythology, king of the Bebryces and son of Poseidon, famous for his cruelty and the boxing match lost to the Argonaut Pollux. In astronomy, the name designates a centaur asteroid (55576 Amycus) orbiting in the outer solar system, named in honor of this mythological figure.
- Andromache — An international graphic variant of Hellenic or Anglo-Saxon origin for the name Andromaca, widely used in global academia. In a scientific and structural astronomical context, the name designates the main-belt asteroid '175 Andromache', discovered in the 19th century by astronomer James Craig Watson.
- Antiope — The established Romanian form for the name of several feminine characters in Greek mythology, most famously the mother of the twins Amphion and Zethos, conceived with the god Zeus; it also designates a large main-belt asteroid (90 Antiope), remarkable for its unique symmetrical binary structure.
- Apophis — A demonic deity in ancient Egyptian mythology, depicted as a gigantic serpent embodying primordial chaos, darkness, and destruction, acting as the supreme enemy of the sun god Ra. In modern astronomy, the name designates the near-Earth asteroid 99942 Apophis, which captured the attention of the international scientific community due to its trajectory periodically intersecting Earth's orbit.
- Ariadne — A famous character in Greek mythology, daughter of King Minos of Crete and Pasiphae, who helped Theseus kill the Minotaur and escape the Labyrinth by providing him with a ball of thread (Ariadne's thread). In astronomy, the term designates asteroid number 43 in the main belt; metaphorically, the name represents the symbol of a secure guide or an ingenious solution that allows an escape from an extremely complex situation.
- Ariadne — A proper name of Greek mythological origin (Ariadne), used in literary Romanian or international scientific contexts as a common noun or neologism to describe a guiding element, a structural rescue strategy, or a guiding thread within an extremely complex situation. In a specialized sense, the term identifies the butterfly genus 'Ariadne' from the Nymphalidae family or the main-belt asteroid 43 Ariadne.
- Arsinoe — A proper name of ancient Greek origin, historically borne by several famous queens and princesses of the Ptolemaic dynasty of ancient Egypt, notably Arsinoe II and Arsinoe IV (the sister of Cleopatra). In geography, the name designated various ancient cities in the Mediterranean basin renamed in honor of these sovereigns, while in modern science, the term identifies asteroid 404 Arsinoe from the main belt and a genus of fossil mammals from the Embrithopoda order (Arsinoitherium).
- Artemis — An adapted form or literary variant for Artemis, the goddess of the hunt, forests, wild animals, and the Moon in Greek mythology, twin sister of Apollo; (in astronomy) a designation attributed to certain celestial bodies, asteroids, or large planetary geological structures; (in biology) a name used regionally or scientifically in the classification of certain medicinal or aromatic plant species from the Artemisia family or aquatic organisms from the Artemia genus.
- Astérie — An old popular name or rare lexical regionalism used in isolation to name the starfish (a marine invertebrate of the Asteroidea class); the term represents a direct adaptation of the noun from the French language ('astérie') or classical Latin, preserved in old 19th-century natural history translations.
- Asteroid — A rocky or metallic celestial body, much smaller than a planet, orbiting the Sun, with most clustered in the main belt between Mars and Jupiter; as an adjective, it describes an object, organism, or structure exhibiting a stellar shape or star-like radial symmetry.