Burgess: the row β, δ, π Scorpionis, 'δ (2.3) being the junction-star' (the middle, per v. 18).
अनुराधा Anurādhā
Dschubba · δ Scorpii · Scorpius
Attestations
FOUR stars, shaped like a string of jewels (ratnāvalī-saṃsthāna), deity Mitra, gotra Ālaṃbāyanīya. The jewel-string of four fits β, δ, π, ρ Scorpii. Mitra lordship agrees with the Vedic lists and with the siddhāntic epithet Maitra.
See the bahula entry for the three-witness collation of this sūtra.
Named by Pāṇini himself in the ten-asterism list at 4.3.34. Vasu's commentary on 1.2.63 additionally cites viśākhānurādhāḥ 'the stars Viśākhā and Anurādhā' as the standard counter-example to that rule, so the compound was traditional; but that phrase is the Kāśikā's, not Pāṇini's. The archaic Vedic alternative Rādhā does not occur in the Aṣṭādhyāyī.
Devanagari transcribed by the compiler from the page FACSIMILE of the Ray edition (Calcutta 1899), scan leaf n216 = printed p. 114–115: https://archive.org/download/in.ernet.dli.2015.292705/page/n216.jpg . The archive.org OCR of this volume is unusable for Devanagari, so no verse here is taken from the OCR text; every figure was re-read at full scan resolution and cross-checked against a second independent scan of the same edition (https://archive.org/download/siddhantadarpanachandrashekarsimha1897_252_Z/page/n217.jpg). Round brackets and the figures in them are the PRINTED EDITION'S own: (n) is the serial number of the asterism/star and the figure following it is the edition's decoding of the bhūtasaṅkhyā word-numeral that precedes it. These are the two printed segments of the dhruva list (vv. 2–6) and the śara list (vv. 7–10) that carry this asterism's own figures; the complete verses are given under db_id 'yogatara-catalog'.
SIDDHĀNTA DARPAṆA XII (Sāmanta, 1869): dhruva (polar longitude) 218°30', śara (polar latitude) 2°00' south. The direction comes from XII.11, which makes the śara southern for the asterisms numbered 4, 5, 6, 9, 13, 14, 16–21 and 24 and northern for all the rest; XII.12–13 give the asterism 7 star(s). TRUE VALUES for 1870 CE, reduced to Sāmanta's OWN sidereal zero (his Citrā = 179°, i.e. Spica; implied ayanāṃśa 22°12'), as polar longitude / polar latitude: δ Sco 218°08' / -2°01'. VAṬEŚVARA-SIDDHĀNTA VIII.2.1–2 (904 CE) puts the same junction star at Alin 14° (= 224°00' measured from the sidereal origin) with a śara of 3°00' south (VIII.2.5–6, direction by VIII.2.8).
This is the printed segment of the continuous dhruvaka list (VIII.2.1–2) that carries this star's own figure; the star's kṣepa is item no. 17 of the unbroken numeral run of VIII.2.5–6, which cannot be split, so the whole passage is also given verbatim under db_id 'yogatara-catalog'. Devanagari transcribed by the compiler from the page FACSIMILE of K. S. Shukla's INSA edition of the Sanskrit text, scan leaf n317 = printed p. 293: https://archive.org/download/VatesvaraSiddhantaSanskritText/page/n317.jpg . The archive.org OCR is unusable for Devanagari. The SQUARE brackets and the figures inside them are the EDITION'S own decoding of the bhūtasaṅkhyā word-numerals, reproduced here so that no numeral is silently converted. Shukla's English translation and notes are in copyright: they are neither quoted nor relied on here — only the constituted mūla text and the edition's numeric glosses.
VAṬEŚVARA-SIDDHĀNTA VIII.2 (904 CE) gives the junction star's dhruvaka (polar longitude) as Alin 14° — Vaṭeśvara states the dhruvakas as degrees WITHIN each zodiacal sign, not as absolute longitudes, so this is 224°00' from the sidereal origin — and its kṣepa (polar latitude, VIII.2.5–6) as 3°00', south by the rule of VIII.2.8 (a verse the edition notes is identical with Brahmagupta's Khaṇḍakhādyaka I.9.13). TRUE VALUES for 904 CE reduced to Vaṭeśvara's own sidereal zero (his Citrā = 3° of Libra = 183°), as polar longitude / polar latitude: δ Sco 222°02' / -1°55'. For comparison Sāmanta (1869) gives 218°30' / 2°00' south. Vaṭeśvara's list is essentially the inherited Sūrya-Siddhānta/Brahmagupta set: it is a fourth independent witness to those values rather than a fresh observation.
Verbatim parallels from the two earlier Chinese versions of the same Śārdūlakarṇāvadāna material, and the Tang commentator's note on the Chinese star-count: 摩登伽經 (Mātaṅga-sūtra) T21n1300, T21.0405a05: 「房宿四星,形類珠貫,一日一夜與月共俱,酒肉為祭,係於親神,姓阿藍婆。」 | 舍頭諫太子二十八宿經 T21n1301: NO per-asterism entry — the name appears in the list but the description is missing from the received text. | Yang Jingfeng's interlinear note in T21n1299 at T21.0389c17: 「景風曰:中國天文,房四星,主天道,東方之宿也」
Chinese lunar lodge (xiu) 房 Fang; T1301 renders the name semantically as — (entry lost). A FIVE-FOR-FIVE match with the Śārdūlakarṇāvadāna: four stars (catustāram), a STRUNG-JEWEL figure (T1300 形類珠貫 = ratnāvalī-saṃsthānam), MITRA as deity (T1299 密多羅, T1300 親神 'the deity of friendship' = mitra-daivatam), LIQUOR-AND-FLESH as food (酒肉 = surāmāṃsāhāram), and the gotra 阿藍婆 = Ālaṃba, matching ālaṃbāyanīyaṃ gotreṇa. NEGATIVE FINDING: T1301 omits Anurādhā (悅可) from its per-asterism descriptions altogether — the name stands at no. 15 in its list (十五曰悅可, T21.415a28) but the western group runs straight from Viśākhā to Jyeṣṭhā and yields only six described asterisms where the text claims seven. 悅可 'pleasing' is itself a good gloss on anu-rādh 'to propitiate'.