Argo

animated GIF for Argo
animated GIF of the transformation of the constellation Argo over the course of the centuries from ancient Greek to modern depictions (map: Stellarium)

Argo Navis (short: Argo) is one of the constellations of the Almagest star catalogue (137 CE) that became standardized by common usage of several cultures in the subsequent centuries. In the Early Modern Era, the constellation was changed and finally included in the set of constellations, globally defined by the IAU over the course of the 1920s.

History of Argo

There is no Babylonian predecessor at the place of this Greek constellation. In the place of the Greek Argo, the Babylonian uranology recognizes the constellations of the Harrow and the Asterism of Eridu.

Yet, the Babylonian uranology does contain a constellation of a ship or rather a boat but this is at the opposite site of the sky, frequently identified with the stars in the modern constellations Sgr, CrA and Cap (or only CrA). Some scholars think that The Ship (now called Argo) in the Greek culture is halved and sails backwards through the sky because of hypothetical roots in the Epic of Gilgamesh. However, this scholarly suggestions lacks evidence.

Aratus

Close to the great Dog’s tail is Argo towed stern first. Its course is not that of a ship proceeding on its normal business, but its movement is backward-turned, like that of real [345] ships when the sailors have already turned the stern about on entering harbour: all the crew quickly back water, and the ship surging astern makes fast to the land. So this Argo of Jason is towed stern first. Dark and starless from the prow as far as the actual mast she goes, but the rest is all bright. [351] The steering-oar is detached and set fast under the Dog’s hind legs as it runs ahead. (Kidd 1997)

Other names

Ratis (Manilius I, 623 and 694; Germanicus 622 and 683), Cymba (Avienus 757), Carina (Germanicus 374; Avienus 808), Puppis (Cic. Arat. 34; 389)

Eratosthenes
Hipparchus
Hyginus, Astronomica

Some have said this ship was called Argo in Greek on account of her speed, others because Argus was her inventor. Many have said she was the first ship on the sea, and for this reason especially was pictured in the stars. Pindar says she was built in the town of Magnesia called Demetrias — Callimachus in that district near the temple of Actian Apollo which the Argonauts are thought to have founded on their departure. The place is called Pagasae, in Greek pagasai, because the Argo was first fitted together there. Homer says that this same place was in the district of Thessaly. Aeschylus and some others say that in the same place a speaking beam was added by Minerva. The entire form of the ship does not appear in the stars; it is divided from stern to mast, signifying that men should not be in despair when their ships are wrecked. (Mary Ward 1960)

Geminos

Ptolemy's Almagest

Map of Argo in Stellarium with the Little Shield marked and the star "Azmidi" highlighted.

Argo, The Ship is one of the southern constellations.

Caption text
No.Greek

(Heiberg 1898)

English translation

(Toomer 1984)

ident.
Ἀργοῦς ἀστερισμός.
1τῶν ἐν τῷ ἀκροστολίῳ β ὁ προηγούμενος.The more advanced of the 2 stars in the stern-ornament11 (e) Pup
2ὁ ἐπόμενος αὐτῶν.The rearmost of themrho Pup
3τῶν ὑπὲρ τὴν ἐν τῇ πρύμυῃ ἀσπιδίσκην β συνεχῶν ὁ βορειότεροςThe northernmost of the 2 stars close together over the little shield in the poopxi Pup
4ὁ νοτιώτερος αὐτῶThe southernmost of themo Pup
5ὁ τούτου προηγούμενος.The star in advance of thesem Pup

HR 2944

6ὁ ἐν μέσῃ τῇ ἀσπιδίσκῃ λαμπφόςThe bright star in the middle of the little shieldHR 2948 +29
7τῶν ὑπὸ τὴν ἀσπιδίσκηη γ’ ὁ προηγούμενοςThe most advanced of the 3 stars under the little shieldp Pup

HR 2922

8ὁ ἐπόμενος αὐτῶνThe rearmost of them3 Pup
9ὁ μέσος τῶν τριῶν.The middle one of the three1 Pup
10ὁ ἐπὶ τοῦ χηρίσκου.The star on the goose[-neck]HR 3113
11τῶν ἐν τῇ τρόπει τῆς πρύμνης β ὁ βορειότεροςThe northernmost of the 2 stars in the stern-keel?
12ὁ νοτιώτερος αὐτῶThe southernmost of thempi Pup
13τῶν ἐν τῷ καταστρώματι τῆς πρόμνης ὁ βορειότερος.Stars in the poop-deck:

1. the northernmost

f Pup

HR 2937

14τῶν ἐφεξῆς ἡ ὁ προηγούμενος!2. the most advanced of the next 3HR 2961 + 64
15ὁ μέσος αὐτῶ3. the middle onec Pup

HR 3017

16ὁ ἐπόμευος τῶν τριῶν4. the rearmost of the threeb Pup

HR 3084

17ὁ τούτοις ἐπόμευος ἐπὶ τοῦ καταστρώματος λαμπρός5. the bright star on the deck to the rear of thesezet Pup
18τῶν ὑπὸ τὸν λαμπρὸν ἀμαυρῶν β ὁ προηγούμενος6. the more advanced of the 2 faint stars under the bright onea Pup

HR 3080

19ὁ ἐπόμενος αὐτῶ7. the rearmost of themHR 3162
20τῶν ὑπὲρ τὸν εἰρημένου λαμπρὸν β ὁ ἠγούμενοςἡ8. the more advanced of the 2 stars over the above-mentioned bright oneh1 Pup

HR 3225

21ὁ ἐπόμενος αὐτῶν9. the rearmost of themh2 Pup

HR 3243

22τῶν ἐπὶ ταῖς ἀσπιδύσκαις ὡς ἐπὶ τῆς ἱστοδόκης ν’ ὁ βόρειος.The northernmost of the 3 stars on the little shields, about on the mast holderHR 3439
23ὁ μέσος αὐτῶνThe middle oned Vel

HR 3477

24ὁ γότιος τῶν τριῶν.The southernmost of the threee Vel

HR 3426

25τῶν ὑπὸ τούτους β συνεχῶν ὁ βορειότερος.The northernmost of the 2 stars close together under these*a Vel

HR 3487

26ὁ νοτιώτερος αὐτῶν.The southernmost of them*b Vel

HR 3445

27τῶν ἐν μέσῳ τῷ ἱστῷ β ὁ νότιοςThe southernmost of the 2 stars in the middle of the mastbet Pyx
28ὁ βορειότερος αὐτῶν.The northernmost of themalf Pyx
29τῶν πρὸς τῷ ἄκρῳ τοῦ ἱστοῦ β ὁ προηγούμενος.The more advanced of the 2 stars by the tip of the mastgam Pyx
30ὁ ἐπόμενος αὐτῶνThe rearmost of themdel Pyx
31ὁ ὑποκάτω τῆς ν’ καὶ ἐπομένης ἀσπιδίσκηςThe star below the 3rd and rearmost little shieldlam Vel
32ὁ ἐπὶ τῆς ἀποτομῆς τοῦ καταστρώματος.The star on the cut-off of the deckpsi Vel
33ὁ μεταξὺ τῶν πηδαλίωυ ἐν τῇ τρόπειThe star between the steering-oars, in the keelsig Pup
34ὁ τούτῳ ἐπόμενος ἀμαυρός.The faint star to the rear of thisHR 3055
35ὁ τούτῳ ἐπόμενος ὑπὸ τὸ κατάστρωμα λαμπρόςThe bright star to the rear of this, under the deckgam Vel
36ὁ τούτου πρὸς νότου ἐπὶ τῆς κάτω τρόπεως λαμπρόςThe bright star to the south of this, on the lower [part of the] keelchi Car
37τῶν ἐπομένων τούτῳ ἢ ὁ προηγούμενοςThe most advanced of the 3 stars to the rear of thisomi Vel
38ὁ μέσος αὐτῶν.The middle onedel Vel
39ὁ ἐπόμενος τῶν τριῶν.The rearmost of the threeHR 3498
40τῶν τούτοις ἐπομένων β ὁ πρὸς τῇ ἀποτομῇ ὁ προηγούμενος.The more advanced of the 2 stars to the rear of these, near the cut-offkap Vel
41ὁ ἐπόμευος αὐτῶν .The rearmost of themN Vel

HR 3803

42τῶν ἐν τῷ βορείῳ καὶ ἠγουμένῳ πηδαλίῳ β ὁ ἠγούμενοςThe more advanced of the 2 stars in the northern, advance steering-oareta Col
43ὁ ἐπόμενος αὐτῶν.The rearmost of themnu Pup
44ὁ τῶν ἐν τῷ λοιπῷ πηδαλίῳ β ὁ προηγούμενος καλούμενος. ΚάνωβοςThe more advanced of the 2 stars in the other steering-oar, called Canopusalf Car
45ὁ λοιπὸς καὶ ἐπόμενος αὐτῶν.The other, rearmost startau Pup
allἀστέρες με, ὥν α’ μεγέθους ἂ, β’ ξ, ἡ ἱα, δ’ ιθ, εξ, ς’ α

Bayer's Uranometria

de Houtman's Star Catalogue

Transformation Images

Splitting Argo up into three constellations

In 1755, Nicolas Louis de Lacaille divided Argo into the three modern constellations that occupy much of the same area: Carina (the keel), Puppis (the poop deck or stern), and Vela (the sails).

In his 1768 Coelum Australe Stelliferum, Lacaille divided the more than 160 stars in the constellation into the regions Argûs in carina (Carina, the keel), Argûs in puppi (Puppis, the stern), and Argûs in velis (Vela, the sails).

References