Top Tweets for #IAUStarNames
🔵 Kautoki — ζ¹ Lyr
Yellow-white binary in Lyra, preserving Kapingamarangi’s Polynesian sky tradition.
🧵 “Handle of the adze” (kau-toki), a celestial woodworking tool.
🌡️ 7,914 K | 2.36 M☉ | 153 ly
🔬 Chemically peculiar binary.
#Kautoki #IAUStarNames 🌌
🟡 Genghe — σ Boo
Yellow-white F-type star in Boötes. Gěnghé (梗河) means “Celestial Lance,” an ancient Chinese asterism of three stars.
🌡️ 6,594 K | 3.84 M☉ | 1.47 R☉ | 50 ly
🔬 F4 V star with a strong magnetic field & X-ray emission.
#Genghe #IAUStarNames #Bootes ✨
🟡 Tepiamenit — τ Boo
🔵 Khepdenreret — ε Her
Ancient Egyptian sky names reborn. These stars preserve Menit and Reret, the Hippopotamus Goddess, from the Ramesside Star Clocks (~1200 BCE), reconnecting modern stars with Egypt’s celestial heritage. ✨
#IAUStarNames #AncientEgypt
🟠 Tianbian — α Sct
An orange giant in Scutum, preserving the ancient Chinese asterism Tiān Biàn (“Celestial Cap”), recorded since ~100 BCE as part of the Celestial Market.
🌡️ 4,315 K | 1.14 M☉ | 31 R☉ | 174 ly
🔬 K-type giant with slight brightness variations.
#IAUStarNames
🟡 Naga — γ Hydrae
A golden G-type giant (mag 3.0) marking the tip of Hydra’s tail. Nāga means “serpent” in Sanskrit, echoing sacred serpent traditions across South & SE Asia. Spectroscopic binary, ~5127 K, 19 R☉, 132 ly.
IAU Feb 2026.
#Naga #IAUStarNames 🐍✨
⚪ Huagai — ι Cassiopeiae
A complex multiple-star system in Cassiopeia. Huagai (“Imperial Canopy”) crowns the Purple Forbidden Palace in ancient Chinese astronomy. Magnetic, hierarchical system, ~141 ly, circumpolar.
IAU Dec 2025.
#Huagai #IAUStarNames
⚪️ Shangcheng (上丞) — HIP 14862
A fast-spinning white star in Cassiopeia. Shangcheng (“Great Imperial Minister”) guards the northern gate of China’s Purple Forbidden Palace. Strongly oblate A-type star, ~160 ly away.
IAU Dec 2025.
#Shangcheng #IAUStarNames
🎄🟠 Kamelos — HD 45866
A faint K-type red giant in Camelopardalis. Kamelos (“camel”) plays on the Greek roots of the Giraffe constellation and its 17th-century lore. Cool, swollen, and quiet: 4200 K, ~52 R☉, 579 ly.
IAU Dec 2025.
#Kamelos #IAUStarNames
🎄🦌 Aldu — ε Persei A bluish-white B-type star (mag 2.9) in Perseus. Named Áldu (“Reindeer Cow”) from Sami tradition, part of the winter reindeer constellation. Rapidly pulsating spectroscopic binary, 26,500 K, 15 M☉, 6 R☉, 537 ly. IAU Dec 2025. #Aldu #IAUStarNames
🎄 Rangifer — 49 Cas
A circumpolar G-type giant (mag ~5) in Cassiopeia.
Named after the extinct constellation Rangifer (Reindeer), inspired by Sámi sky traditions and introduced in 1743.
🌡️ ~4880 K | ~1.1 M☉ | ~19 R☉ | ~426 ly
IAU adopted Dec 2025.
#Rangifer #IAUStarNames 🦌✨
⚪️ Alaybasan (β Tri) — mag 3.0 white A-type binary in #Triangulum.
🌡️ 7,680 K | 3.25 M☉ | 3.4 R☉ | 124 ly | A5 III
Name from Arabic al-Aybasān, “the Two Bone-Joints.”
A 31.4-day spectroscopic binary as tight as Mercury’s orbit.
#Alaybasan #IAUStarNames #BinaryStars
🟡 Ain (ε Tau) – yellow giant in #Taurus, mag 3.5, ~154 ly away.
🌡️ 4,880 K | 2.45 M☉ | 12 R☉
Hosts giant planet Amateru (ε Tau b), a hot super-Jupiter (~7 M♃) orbiting every 586 d.
Name “Ain” = Arabic ʿAyn al-Thawr, “Bull’s Eye.”
#Ain #Amateru #IAUStarNames #Exoplanet
🟡 Achird (η Cas) – HIP 3821
A nearby Sun-like star in Cassiopeia ✨ mag 3.44, just 19 ly away.
F9V main sequence: 🌡️ 6012 K | 1.0 M☉ | 1.0 R☉
Binary system discovered by Herschel (1779).
✅ IAU-approved name
#Achird #IAUStarNames #Cassiopeia #NearbyStars
🔵 Rasalnaqa (ι And) – HIP 116631
Arabic for “Head of the She-Camel” 🐪 — from Arabian sky lore blended with Almagest 🌌
🔬 B8V blue-white main-sequence | mag 4.29 | 502 ly | ~116 Myr young
✨ IAU-approved 2025
#Rasalnaqa #IAUStarNames #WGSN #Andromeda #ArabicStarNames @IAU_org
🟠 Paradys (α Apodis) – HIP 72370
“Bird of Paradise” 🌺 Named by Plancius (1598), now IAU-approved (2025)
🔬 K3III orange giant | mag 3.79 | 411 ly
📍 Tail of Apus, decl. –79° — circumpolar in southern skies
#Paradys #IAUStarNames #WGSN #Apus #Plancius
🟠 Udkadua (λ And) – HIP 116584
Sumerian for “Storm Demon with the Gaping Mouth” ⚡ — from a Babylonian timekeeping asterism ⏳
🔬 G8IVK yellow-orange subgiant | mag 3.82 | 84 ly
📍 Hand of Andromeda, near Cassiopeia
✨ IAU-adopted 2025
#Udkadua #IAUStarNames #WGSN #Andromeda
🟡 Honores (7 And) – HIP 114570
Latin for “honours” — a name from Bode’s lost constellation (1801) 🌟
🔬 F1V main-sequence | mag 4.52 | 80 ly
📍 Left arm of Andromeda
✨ Adopted by IAU in 2025
#Honores #IAUStarNames #WGSN #Andromeda #StellarHeritage @IAU_org
🟠 Tusizuo (屠肆左) – 109 Her
"Left Star of the Butcher’s Shop" from Han dynasty asterism Tú Sì 🐂
🌟 K2III red giant | 3.84 mag | 128 ly
☀️ 52× Sun’s luminosity
📍 Between Hercules’ hand & head
#Tusizuo #IAUStarNames #ChineseAsterism #WGSN #109Her @IAU_org
✨ On 22 July, PM Anthony Albanese proudly called Epsilon Crucis "Ginan", an Australian star — featured in the flag 🇳🇿.
Named by the @IAU_org in honour of the Wardaman people and their sky stories.
#Ginan #EpsilonCrucis #IAUStarNames #CulturalAstronomy #SouthernCross
⚪ Bodu (帛度) – 95 Her
A luminous white subgiant (A2IV), named after a Han dynasty textile ruler asterism 🌟
✨ 167× Sun's luminosity, 432 ly away
🧵 IAU-approved June 2025
#Bodu #IAUStarNames #WGSN #ChineseAsterism #95Her #SkyHeritage
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