the dragon · pronounced DRAY-koh. Draco winds around Ursa Minor in the far northern sky, forming a long chain between the Big and Little Dippers. Much of it is circumpolar from mid-northern latitudes, so the constellation can be followed throughout the year, with its head highest on summer evenings. Ptolemy catalogued Draco among the ancient 48, and Greek authors linked it with several dragons, most commonly Ladon, guardian of the Hesperides’ golden apples. Thuban was the pole star near 2700 BCE because Earth’s rotational axis slowly precesses; Polaris holds that role today, and the pole will continue to shift. Eltanin is now Draco’s brightest star and anchors its compact head. The constellation contains the Cat’s Eye Nebula, whose intricate shells trace repeated mass loss from a dying star, and numerous remote galaxies including the edge-on Spindle Galaxy. The annual Draconid meteors radiate from its direction and can occasionally surge. Draco’s IAU boundary defines a large astronomical region; the dragon outline is a historical selection of stars, not a physical object or universal cultural map.
About Draco
Draco is one of the 88 constellations recognized by the International Astronomical Union. Its standard three-letter abbreviation is Dra, and astronomers use the genitive form Draconis when naming stars associated with it. The constellation's reference position lies around right ascension -6.1 hours and declination +64 degrees.
Its location places it in the northern sky. For a typical mid-latitude observer, this part of the celestial sphere is especially well placed during summer evenings. Exact visibility depends on latitude, local horizon, date and time.
History and mythology of Draco
Historical origin
Ptolemy catalogued Draco among the ancient 48, and Greek authors linked it with several dragons, most commonly Ladon, guardian of the Hesperides’ golden apples. Thuban was the pole star near 2700 BCE because Earth’s rotational axis slowly precesses; Polaris holds that role today, and the pole will continue to shift.
The modern constellation
Draco became one of the 88 official constellations standardized by the International Astronomical Union. Its boundary is a coordinate-defined sky region, while the familiar line figure joins only selected stars and has no physical depth.
Reading the cultural record
Names and stories attached to this part of the sky changed across languages, periods and communities. Cultural parallels should be identified from specialist sources rather than presented as interchangeable versions of Draco.
How to find Draco
- Use a location-aware chart and observe when Draco reaches its highest evening altitude; check that the full constellation rises from your latitude.
- Locate Eltanin, magnitude 2.2, then compare its direction with a brighter neighboring constellation rather than relying on line art alone.
- Trace the main pattern toward Rastaban; binoculars reveal the fainter connecting stars while preserving a wide field.
- Move to Cat’s Eye Nebula with a low-power eyepiece or binoculars, then increase magnification only if its surface brightness permits.
Bright stars in Draco
Eltanin
Notable star- Magnitude
- 2.2
- Distance
- 154 ly
An orange giant in the dragon’s head and Draco’s brightest star.
Rastaban
Notable star- Magnitude
- 2.8
- Distance
- 380 ly
A luminous yellow giant forming another corner of the head.
Thuban
Notable star- Magnitude
- 3.7
- Distance
- 303 ly
Earth’s northern pole star around 2700 BCE because of axial precession.
Edasich
Notable star- Magnitude
- 3.3
- Distance
- 103 ly
An orange giant known to host an exoplanet.
Deep-sky objects in Draco
Cat’s Eye Nebula
NGC 6543 has nested shells and knots produced by complex late-stage stellar mass loss.
NGC 5866
Often identified with Messier 102, this edge-on system shows a sharp equatorial dust lane.
Draco Dwarf Galaxy
A faint satellite of the Milky Way dominated dynamically by dark matter.
Meteor showers associated with Draco
Draconids
Peak: around 8 OctoberSlow meteors from comet 21P/Giacobini–Zinner; some returns produce brief outbursts.
Interesting facts about Draco
- Draco’s traditional name refers to dragon, while its official IAU boundary defines a precise region of the sky.
- Eltanin, at magnitude 2.2, is a key star in Draco. An orange giant in the dragon’s head and Draco’s brightest star.
- Cat’s Eye Nebula is a notable planetary nebula in Draco. NGC 6543 has nested shells and knots produced by complex late-stage stellar mass loss.
- The Draconids meteor shower peaks around 8 October. Slow meteors from comet 21P/Giacobini–Zinner; some returns produce brief outbursts.
- Ptolemy catalogued Draco among the ancient 48, and Greek authors linked it with several dragons, most commonly Ladon, guardian of the Hesperides’ golden apples.