Dictionary term
Sadr
Direct answer
Sadr is Gamma Cygni, a luminous yellow-white supergiant at the center of the Northern Cross and the chest of Cygnus.
Sadr is the central hub star where the Northern Cross's arms meet.
Sadr is the central hub star where the Northern Cross's arms meet.
A symbolic locator, not a substitute for an observational chart at a specific place and time.Quick reference
- Use when
- Trace from Deneb toward Albireo; Sadr marks the midpoint where the crossbar extends to either side.
- Do not use it for
- Sadr is foreground to much of the apparent nebulosity and does not illuminate every cloud projected around it.
- Reference category
- Constellations & Star Lore
- Related terms
- Zubeneschamali, Unukalhai, Albireo, Gacrux
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The story behind Sadr
Its Arabic-derived proper name means chest, matching the traditional Swan figure.
Sadr in spiritual tradition
Sadr centers a human cross within a physically turbulent nursery of stars.
Sadr: fact and faith, kept distinct
This is a factual sky reference. It can support wonder and orientation without turning a measured position or inherited pattern into a claim of fate or private revelation.
Sadr in numerology
Sadr is not a numerology claim. Any numbers attached to it should retain their ordinary scientific, calendrical, navigational, or historical meaning unless a separate symbolic interpretation is clearly labeled.
Why Sadr matters
Its position sits within a complex of bright emission nebulae and dense Milky Way star fields.
Sadr at work: an example
Wide-field photographs reveal the extensive Gamma Cygni Nebula surrounding the line of sight near Sadr.
Where interpretation stops
Sadr is presented as sourced astronomy, calendrical, Earth-science, cultural, or instrument-history reference. Definitions should distinguish measured phenomena from civil convention and historical interpretation, preserve location and time dependencies, and avoid turning factual sky data into a deterministic personal claim.
Sources and editorial method
Research references used for this entry include:
- IAU Division C Working Group on Star Names - Official IAU working group responsible for standardizing star names used in international astronomy.
- CDS SIMBAD Astronomical Database - Professional astronomical database for stellar identifiers, positions, classifications, and bibliography.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Also appears in
- Constellations & Star Lore
- Aliases
- None listed
- Last updated
- 2026-07-16
Stand at the heart of the Northern Cross
Sadr in a book is one thing; Sadr in your own birth chart is your life. The Oracle casts your real chart and tells you what it means for your love, your work, and your year ahead, in conversation, free.
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Common questions
What is Sadr?
Sadr is Gamma Cygni, a luminous yellow-white supergiant at the center of the Northern Cross and the chest of Cygnus.
How is Sadr used in an almanac?
Trace from Deneb toward Albireo; Sadr marks the midpoint where the crossbar extends to either side.
What should I avoid when interpreting Sadr?
Sadr is foreground to much of the apparent nebulosity and does not illuminate every cloud projected around it.
