Tool to discover and decode the astronomical symbols of the planets (and other stars) of the solar system (the 8 planets, the sun, the moons, the dwarf planets, etc.)
Astronomical Symbol - dCode
Tag(s) : Raw Data, Symbol Substitution
dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!
Astronomical Symbol
Astronomical Symbols of Solar System Objects
Answers to Questions (FAQ)
What is an astronomical symbol? (Definition)
An astronomical symbol is a conventional graphic sign historically used to represent a celestial object (Sun, Moon, planet, dwarf planet, or asteroid). These symbols appeared as early as Antiquity and developed primarily during the Renaissance, in the fields of astronomy, astrology, and alchemy.
Each celestial body in the solar system was assigned a name and sometimes a symbol, often inspired by Greco-Roman mythology. Today, modern astronomy favors standardized designations (official names, numbers, IAU codes), but symbols remain in use for historical, educational, or cultural purposes.
How to recognize astronomical symbols?
Apart from the sun and the moon, the symbols are rather unrepresentative and sometimes there are several symbols (depending on the source) for a same asteroid or planet.
Example: Here are the most common symbols:
.png) | Sun |
.png) .png) .png) | Moon |
.png) | Mercury |
.png) | Venus |
.png) .png) | Earth |
.png) | Mars |
.png) | Jupiter |
.png) | Saturn |
.png) .png) | Uranus |
.png) .png) | Neptune |
For others, use the form at the top of the page.
Do not confuse astronomical symbols and astrological signs (Zodiac signs).
What is the list of minor/dwarf planets in the solar system?
Many stars are listed, the best known are: Pluto, Ceres, Pallas, Juno, Vesta, Astraea, Hebe, Iris, Flora, Metis, Hygie, Parthenope, Victoria, Egeria, Irene, Eunomia, Psyche, Thetis, Melpomene, Fortuna, Proserpine, Bellona, Amphitrite, Leucotheae, Fides, etc.
The astronomical symbols for these asteroids are:
| Amphitrite | .png) |
| Astraea | .png) .png) |
| Bellona | .png) |
| Ceres | .png) |
| Egeria | .png) |
| Eunomia | .png) |
| Fides | .png) |
| Flora | .png) |
| Fortuna | .png) |
| Hebe | .png) .png) |
| Hygeia | .png) .png) |
| Irene | .png) |
| Iris | .png) |
| Juno | .png) .png) |
| Leukothea | .png) |
| Melpomene | .png) |
| Metis | .png) |
| Pallas | .png) |
| Parthenope | .png) .png) |
| Pluto | .png) .png) |
| Proserpina | .png) |
| Psyche | .png) |
| Thetis | .png) |
| Vesta | .png) .png) |
| Victoria | .png) |
Are there Unicode codes for astronomical symbols?
Unicode codes exist for several astronomical symbols, but coverage is partial and limited: Sun (☉ U+2609), Moon (☽ U+263D), Mercury (☿ U+263F), Venus (♀ U+2640), Earth (⊕ U+2295), Mars (♂ U+2642), Jupiter (♃ U+2643), Saturn (♄ U+2644), Uranus (♅ U+2645), Neptune (♆ U+2646), and Pluto (♇ U+2647).
In contrast, the vast majority of asteroids and dwarf planets do not have official Unicode symbols because their historical glyphs are too numerous, variable, or poorly standardized.
Source code
dCode retains ownership of the "Astronomical Symbol" source code. Any algorithm for the "Astronomical Symbol" algorithm, applet or snippet or script (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or any "Astronomical Symbol" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) or any database download or API access for "Astronomical Symbol" or any other element are not public (except explicit open source licence). Same with the download for offline use on PC, mobile, tablet, iPhone or Android app.
Reminder: dCode is an educational and teaching resource, accessible online for free and for everyone.
Cite dCode
The content of the page "Astronomical Symbol" and its results may be freely copied and reused, including for commercial purposes, provided that dCode.fr is cited as the source (Creative Commons CC-BY free distribution license).
Exporting the results is free and can be done simply by clicking on the export icons ⤓ (.csv or .txt format) or ⧉ (copy and paste).
To cite dCode.fr on another website, use the link:
In a scientific article or book, the recommended bibliographic citation is: Astronomical Symbol on dCode.fr [online website], retrieved on 2026-01-28,
