Cetus

star chart of Cetus by IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)

One of the 88 IAU constellations. It is related to the group of constellations around the constellation Andromeda and highly likely originates from the Mediterranean coast, definitely not from Mesopotamia (as this region was covered by the constellation SIM.MAH). There is a comprehensive paper on this constellation.[1]

Etymology and History

The Greek name κῆτος (ketos) does not in any case refer to a real animal, but only to a mythological creature. Its Latinized version "cetus", however, may also designate a whale. "Though archaeological findings of whale remains are uncommon in Greece, there exist few examples of ancient whalebones in the Aegean Sea, probably originating from stranded whales. ... Combined with archaeological artifacts as the bones of prehistorical giant sea creatures in the Wādī al-Ḥītān (Valley of Whales) in today's Egypt, this might have triggered traveller's imagination and have led to further stories (and cock-and-bull story)."[1]

Origin of Constellation

The Greek constellation probably originates from the east coast of the Mediterranean as the mythology of this seamonster either includes it in the tale of princess Andromeda threatened by a seamoster and rescued by the hero Perseus, or princess Hesione exposed to another seamonster and rescued by Hercules. The Andromeda saga is related to a rock in the ancient habour of Old Jaffa (Tel Aviv) while Hesione is a princess of Troy (Anatolia). In both cases, the seamonster is home to the Mediterranean.

As this constellation does not have a Babylonian equivalent, we suspect that it was taken from another culture in order to diversify the sky culture in Alexander's new empire.

Babylonian

Greco-Roman

Aratus

Although she lies no small distance away, Andromeda is threatened by the approach of the great Sea-monster. [355] For in her course she lies exposed to the blast of the north wind from Thrace, while the southerly brings against her the hostile Monster, below the Ram and the two Fishes, and positioned a little above the starry River. For under the gods’ feet that too moves as a separate group, [360] a remnant of Eridanus, river of much weeping. It extends below the left foot of Orion. The tail-chains, by which the extremities of the Fishes are held, both come together as they descend from the tail-parts, and behind the Monster’s back-fin move jointly [365] as they converge, and terminate in a single star that lies close to the top of the Monster’s spine. (Kidd 1997)

Eratosthenes
Hipparchus
Hyginus, Astronomica

Whale. With regard to the Sea-Monster, they say that it was sent by Neptune to kill Andromeda, about whom we have already spoken. But because it was killed by Perseus, on account of its huge size and his valour it was placed amongst the constellations. (Mary Ward 1960)

Geminos

Almagest Κῆτος

idGreek

(Heiberg 1898)

English

(Toomer 1984)

ident.
Κήτους ἀστερισμόρ
1ὁ ἐπ’ ἄκρου τοῦ μυκτῆροςThe star on the tip of the nostrilslam Cet
2τῶν ἐν τῷ ῥύγχει ἢ ὁ ἑπόμενος ἐπ’ ἄκρας τῆς σιαγόνοςThe three stars in the snout: the rearmost, on the end of the jawalf Cet
3ὁ μέσος αὐτῶν καὶ ἐν μέσῳ τῷ στόματιThe three stars in the snout: the middle ane, in the middie of the mouthgam Cet
4ὁ προηγούμενος τῶν ν’ καὶ ἐπὶ τῆς γένυοςThe three stars in the snout: the most advanced of the 3, on the cheekdel Cet
5ὁ ἐπὶ τῆς ὀφρόος καὶ τοῦ ὀφθαλμοῦThe star on the eyebrow and the eyenu Cet
6ὁ τούτου βορειότερος ὡς ἐπὶ τῆς τριχόςThe one to the north of this, about on the hairxi2 Cet
7ὁ τούτων προηγούμευος ὡς ἐπὶ τῆς χαίτηςThe one in advance of this, about on the manexi1 Cet
8τοῦ ἐῃ τῷ στήθει τετραπλεύρου τῆς ἠγουμένης πλευρᾶς ὁ βόρειοςThe quadrilateral in the chest: the northernmost star on thc advance siderho Cet
9ὁ νότιος τῆς ἠγουμένης πλευρᾶςThe quadrilateral in the chest: the southernmost one on the advance sidesig Cet
10τῆς ἐπομένης πλευρᾶς ὁ βόρειοςThe quadrilateral in the chest: the northernmost one on the rear sideeps Cet
11ὁ νότιος τῆς ἐπομένης πλευρᾶςThe quadrilateral in the chest: the southernmost one on the rear sidepi Cet
12τῶν ἐν τῷ σώματι ἢ’ ὁ μέσοςThe midmost of the 3 stars in the bodytau Cet
13ὁ νότιος αὐτῶνThe southernmost of themups Cet
14ὁ βόρειος τῶν τριῶνThe northernmost of the threezet Cet
15τῶν πρὸς τῷ παρούρῳ β ὁ ἐπόμενοςThe rearmost of the 2 stars by the section next to the tailtet Cet
16ὁ προηγούμευος αὐτῶνThe more advanced of themeta Cet
17τοῦ ἐν τῷ παρούρῳ τετραπλεύρου τῆς ἐπομένης πλευρᾶς ὁ βόρειοςThe quadrilateral in the section next to the tail: the northernmost star on the rear sidephi2 Cet
18ὁ νότιος τῆς ἐπομένης πλευρᾶς.The quadrilateral in the section next to the tail: the southernmost one on thc rear sideHR 227
19τῆς προηγουμένης πλευρᾶς ὁ βόρειοςThe quadrilateral in the section next to the tail: the northernmost one on thc advance sidephi Cet
20ὁ νότιος τῆς προηγουμένης πλευρᾶςThe quadrilateral in the section next to the tail: the southernmost one on the advance sideHR 190
21τῶν ἐν ἄκροις τοῦς οὐραίοις ᾑ ὁ ἐπὶ τοῦ βορείου.The 2 stars at the ends of the tail-fins: the one on the northern [tail-fin]iot Cet
22ὁ ἐπ’ ἄκρου τοῦ φοτίου οὐραέουThe 2 stars at the ends of the tail-fins: the one on the end of the southern tail-finbet Cet
ἀστέρες πβ, ὥν γ’ μεγέδους ἰ, δ’ ἢ, εἱ δ.{22 Stars, 10 of the third magnitude, 8 of the fourth, 4 of the fifth}

Transfer and Transformation of the Constellation

Greek Mythology

Weblinks

References

  1. 1.0 1.1 Hoffmann, S.M., Vickers, D. and Geymeier, M. (2022). Constellation Cetus: Whale or Monster?, in Hoffmann and Wolfschmidt (eds.). Astronomy in Culture – Cultures of Astronomy, tredition Hamburg/ OpenScienceTechnology Berlin, 287-340