Saʿd al-Aḫbiya

Authors: Khalid Al-Ajaji

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Arabian ḫibāʾtent. image inspired by a century old photo in Matson collection in Library of Congress. (CC BY Khalid AlAjaji 2026).

Saʿd al-Aḫbiya (Arabic: سَعْد الأَخْبِيَة, “The Lucky Star of the Tents”) is an Arabic asterism corresponding to stars in the constellation Aquarius.

Provenance, Etymology, History

Variants

The indigenous Arabic name سَعْد الأَخْبِيَة (Saʿd al-Aḫbiya) is recorded by ibn Qutayba, al-Ṣūfī, ibn ʿĀṣim al-Ṯaqafī, and al-Marzūqī. In later European and modern scholarly literature, the name occurs in several Latin-script forms:

• Saʿd AlAchbiya, Hyde. In VLUGH BEIGHI Tabulas Stellarum fixarum Commentarii (p. 43)
• Saʿd el-achbija, Ideler (p. 195, 289)
• sad al-achbija, Schjellerup (p. 190).
• Sadachbia, Allen (p. 52).
• saʿd al-aḫbiya, Kunitzsch, (entry 257,1, p. 100)

Etymology

Al-Aḫbiya (الأَخْبِيَة, "the small tents") is the plural of Ḫibāʾ, Lisān al-ʿarab defines al-Aḫbiya (الأَخْبِيَةَ), from the root خبي, as follows:

«الخِباءُ مِنَ الأَبنية: وَاحِدُ الأَخْبية، وَهُوَ مَا كَانَ مِنْ وَبَر أَو صُوفٍ وَلَا يَكُونُ مِنْ شَعَر، وَهُوَ عَلَى عَمُودَيْنِ أَو ثَلَاثَةٍ، وَمَا فوقَ ذَلِكَ فَهُوَ بَيْت.»

English

“A Ḫibāʾ is a type of dwelling: its plural is aḫbiya. It is a small shelter made of camel wool or sheep’s wool, rather than [goat] hair, and supported on two or three poles; a structure with more poles than this is a bayt.”

The saʿd element is the ordinary word for good fortune. Ibn Faris says: "s.v. (س ع د)"

«(سَعَدَ) السِّينُ وَالْعَيْنُ وَالدَّالُ أَصْلٌ يَدُلُّ عَلَى خَيْرٍ وَسُرُورٍ، خِلَافَ النَّحْسِ. فَالسَّعْدُ: الْيُمْنُ فِي الْأَمْرِ. وَسُعُودُ النَّجْمِ عَشْرَةٌ: مِثْلُ سَعْدٍ بُلَعَ، وَسَعْدٍ الذَّابِحِ. وَسُمِّيَتْ سُعُودًا لِيُمْنِهَا. هَذَا هُوَ الْأَصْلُ.»

A second explanation of the name as narrated by ibn Qutayba and others:

«ويقال: بل سمّى سعد الأخبية لأنه يطلع فى قبل الدفاء فيخرج من الهوام ما كان مختبئا.»

English translation

“It is also said that it was called Saʿd al-Aḫbiya because it rises shortly before the warm weather, when the noxious creatures come out of their winter hiding places. ”

The second explanation is not a rival etymology but a second motivation for the same word, and Ibn ʿĀṣim preserves the concrete observation on which it rests, on the authority of al-Kalābī (p. 74):

«هَوَامُّ الأرض تكمن ثلاثة أشهر الشتاء، ولا يخرج منها شيء من جحره، فإذا طلع سعد الأخبية كان أول خارج منها الضبّ, فإنه يرى في هذا الوقت قد خرج إلى باب جحره، وأصلح ما كان خرب منه، فيفرح الناس برؤيته ويقولون: قد دنا الدفء.»

English

“The vermin of the earth lie hidden through the three months of winter, and none of them comes out of its burrow; and when Saʿd al-Akhbiya rises, the first of them to come out is spiny-tailed lizard, the ḍabb, which is seen at that time to have come out to the mouth of its burrow and repaired what had fallen in of it — and people rejoice at the sight of it and say: the warmth is near.”

Lisān al-ʿarab from the root سعد says:

«سُمِّيَتْ سَعْدَ الأَخبية لأَنها إِذا طَلَعَتْ خَرَجَتْ حشَراتُ الأَرض وهوامُّها مِنْ جِحَرتها، جُعِلَتْ جِحَرتُها لَهَا كالأَخبية.»

English

“It was named Saʿd al-Aḫbiya because, when it rises, the insects and the creeping creatures of the earth come out of their holes, their holes having been made like tents for them.”

Lisān al-ʿarab gives the attempt in the tradition to hold both readings at once: Here جُعِلَتْ جِحَرتُها لَهَا كالأَخبية is explanatory: the creatures’ burrows (jiḥarah, singular jiḥr) are conceived as their aḫbiyah—their tents, shelters, or temporary dwellings.

English

“Saʿada: The consonants sīn, ʿayn, and dāl form a root denoting goodness and joy, the opposite of ill fortune. Thus, saʿd means auspiciousness or good fortune in a matter. The fortunate stars (suʿūd al-najm) are ten, such as Saʿd Bulaʿ and Saʿd al-Dhābiḥ. They were called suʿūd because of their auspiciousness. This is the fundamental meaning.”

Sources

Ibn Qutayba, Ibn ʿĀṣim, and al-Marzūqī place Saʿd al-Aḫbiya below Saʿd al-Bihām (θ and ν Pegasi). Ibn Qutayba and Ibn ʿĀṣim further describe it as a small, rounded group of stars, resembling a loop of the ribq. By contrast, al-Ṣūfī identifies Saʿd al-Aḫbiya with the stars forming the cord of the southern Fish of Pisces. This divergence may suggest that al-Ṣūfī did not receive the tradition describing Saʿd al-Aḫbiya as a rounded group, and therefore interpreted the asterism as the long stellar line representing the rope itself.

Sources	Charts
Ibn Qutayba (d. 276 AH / 889 CE) places Saʿd al-Aḫbiya among the stellar features near the al-Suʿūd (p. 79). Original Arabic «ثم سعد الأخبية. وهو أربعة كواكب متقاربة. واحد منها فى وسطها. وهى تمثل برجل بطّة. ويقال إن السعد منها واحد. وهو أنورها. والثلثة أخبيته. ويقال: بل سمّى سعد الأخبية لأنه يطلع فى قبل الدفاء فيخرج من الهوام ما كان مختبئا. وهذا التأويل أعجب إلىّ» English translation “Then [comes] Saʿd al-Aḫbiya. It consists of four closely grouped stars, one of them in their midst. They resemble the leg of a duck. It is said that only one of them is the saʿd, namely the brightest, while the other three are its aḫbiya (‘tents’). It is also said that it was called Saʿd al-Aḫbiya because it rises shortly before the warm weather, when the noxious creatures come out of their winter hiding places. This interpretation is more appealing to me.”	Tents of the Arabs. Matson photograph collection, Library of Congress [1]. No known restrictions on publication. Saʿd al-Aḫbiya as described in Anwāʾ sources and as idenified by al-Ṣūfī. (CC BY Khalid Al-Ajaji 2026).
Ibn ʿĀṣim al-Ṯaqafī (d. 403 AH / c. 1013 CE) gives a closely related account (p. 74). Original Arabic «وفي خمس وعشرين ليلة تخلو منه يطلع بالغداة سعد الأخبية، وهو أربعة كواكب متقاربة، واحد منها في وسطها يُمَثَّل برجل بطة، ويقال: إن السعد منها واحد، وهو أنورها، والثلاثة أخبية» English translation "And when twenty-five nights of it have passed, Saʿd al-Akhbiya rises at dawn. It is four closely grouped stars, one of them in their midst, figured as a duck's foot. It is said that the Saʿd of them is one, the brightest, and the three are tents.".
Al-Marzūqī (d. 421 AH / 1030 CE) gives the following account (vol. 1, p. 174). Original Arabic «وأمّا سَعْدُ الأَخْبِيَة: فثلاثة كواكب متحاذية، فوق الأوسط منها كوكب رابع، كأنها به في التمثيل رجل بطّة. وقيل: إنّ السّعد منها واحد، وهو أنورها وإنّ الثلاثة أخبية، وقيل: سمّي بالأخبية لأنه إذا طلع انتشرت [الهوام] فخرج منها ما كان مختبئا في البرد، لأنّ طلوعه في وقت الدّفاء.» English translation “As for Saʿd al-Aḫbiya, it consists of three stars aligned in a row, with a fourth star above the middle one. In their configuration, they resemble the leg of a duck. It is said that only one of them is the saʿd—the brightest—while the other three are its aḫbiya (‘tents’). It is also said that it was named al-Aḫbiya because, when it rises, the creeping creatures disperse: those that had been in hiding during the cold come out, since its rising occurs in the season of warmth.” متحاذية, “aligned in a row”: The reading is likely corrupt. Read متقاربة, “close together,” as in the parallel account: وهو أربعة كواكب متقاربة، واحد منها في وسطها. The emendation gives the expected description of the four-star group and avoids the implausibly restrictive sense “three stars aligned in a row.”
Al-Ṣūfī (d. 376 AH / 986 CE) Original Arabic (description of Aquarius) «وتسمِّي التاسع الذي على ساعده الأيمن مع العاشر والحادي عشر والثاني عشر التي على يده اليمنى: سَعْدَ الأَخْبِيَةِ، وهو المنزل الخامس والعشرون من منازل القمر، سُمِّيَ بهذا الاسم لأنه من أربعة كواكب: ثلاثة منها على مثلث، وواحد في وسط المُثَلَّثِ وهو الحادي عشر, فجعلوا هذا الواحد سعدًا والثلاثة له بمنزلة الخِبَاءِ، ويقال أيضًا إنه سُمِّيَ: سَعْدَ الأَخْبِيَةِ، لأنه إذا طلع، طاب الهواء، وخرج ما كان من الهوام مختبئًا تحت الأرض من البرد في الشتاء» English translation “It calls the ninth, which is on his right forearm, together with the tenth, eleventh and twelfth which are on his right hand: Saʿd al-Aḫbiya, the twenty-fifth station of the moon. It was so named because it consists of four stars: three of them on a triangle, and one in the middle of the triangle, which is the eleventh; they made this one the Saʿd and the three stand to it as a tent. It is also said that it was called Saʿd al-Aḫbiya because when it rises the air turns pleasant and there comes out what had been hidden of the vermin under the ground from the cold in winter.” Al-Ṣūfī names the enclosed star by its number in his catalogue of Aquarius: the eleventh = ζ² Aqr. The four are his nos. 9, 10, 11, 12 = γ, π, ζ², η Aquarii.

Stars Identification

Saʿd al-Aḫbiya isidentified as the four stars γ, π, ζ², η Aquarii. All primary sources are in agreement.

IAU Working Group Star Names

In 2026, the name Saad was suggested as a star name being a member star of Saʿd al-Aḫbiya historical asterism. It is suggested to be used for ζ² Aqr.

WGSN decided in ... 202x to name ... ...