Here are the zodiac signs and their ruling planets/celestial bodies (the 1st or ruling, 2nd or co-ruler and 3rd-domicile or decan, with my own interpretation of detrimental, exaltation and fall/weak). Each sign has about ten of them with the first three with most influence.
ARIES: Mars, Pluto, Venus, the Sun, Saturn, Jupiter, Cruithne, Uranus, Eris, the Moon, Pluto's moon Charon, Mercury, and "east" or "west Points".
TAURUS: Venus, Ceres, Mars, the Moon, Saturn, Uranus, Cruithne, Jupiter, Eris, the Sun, Mercury, and "east point" or Charon.
GEMINI: Mercury, Eris, Jupiter, Venus, Sedna, North (or south) Node(s), Mars, Uranus, Pluto, the Moon, Cruithne, and Lilith.
CANCER: The Moon, Ceres, Saturn, Jupiter, Mars, Mercury, Venus, Neptune, Cruithne, the Sun, and True Node.
LEO: The Sun (our closest star), Saturn, Neptune, Mars, Uranus, Lilith, Saturn, Jupiter, Venus, Xena, Eris, the Moon, and True Node or Mercury.
VIRGO: Mercury (some declare it an exalting planet), Jupiter, Venus, Saturn, True Node, the Moon, Ceres, Chiron, Lilith, Eris, Mars, and "west Point".
LIBRA: Venus, Eris, Mars, Saturn, the Sun, the Moon, True Node, Chiron, Cruithne, Jupiter, "west point" or Mercury, and Pluto's moon Charon.
SCORPIO: Mars, Pluto (+Charon), Venus, Uranus, the Sun, the Moon, Saturn, Neptune, Sedna, Lilith, Chiron, "west Point" or Mercury, and Jupiter.
SAGITTARIUS: Jupiter, Neptune, Mercury, the Sun, south (or North) Nodes, Mars, Uranus, Saturn, Pluto, Lilith, Eris, Cruithne, and Venus or Sedna.
CAPRICORN: Saturn, Uranus, the Moon, Mars, Jupiter, Venus, Mercury, True Node, Xena, Sedna, "west point" or the Sun, and Cruithne.
AQUARIUS: Uranus, Saturn, the Sun, Mercury, Mars, Neptune, Jupiter, Pluto, Xena, Sedna, Eris, the Moon or True Node, and Venus.
PISCES: Neptune, Jupiter, Mercury (some declare it a "fall" planet), Venus, Mars, the Moon, Lilith, Chiron, Pluto (+Charon), Sedna, the Sun, and Saturn or "East Point".
The four "new" signs theorotically by some other astrologers due to the sidereal or astronomically correct zodiac system:
OPHIUCHUS+SERPEN(TARIU)S: the Sun, the Moon, True Node, Jupiter, Venus, Mars, Pluto's moon Charon, Eris, Ceres, Chiron, Lilith, and Mercury or Cruithne.
ORION: The Sun, the Moon, Mars, Uranus, Jupiter, Mercury, Venus, Chiron, True Node, Cruithne, Eris, Sedna, and Saturn or Xena.
CETUS: The Moon, the Sun, Neptune, Pluto's moon Charon, North (or South) Nodes, Eris, Ceres, Sedna, Xena, Lilith, Saturn, Mars, and Mercury or Cruithne.
CORVUS/CRATER/DRACO/ORPHEUS DE HYDRA (?) The Moon, the Sun, Mars, Saturn, Chiron, Sedna, Xena, Lilith, Pluto, True Node, and/or the South (or North) Nodes.
Theories abound on the rulership affect from five more celestial objects: The Galactic Center for Aries/Taurus/Orion, the Earth for Virgo/Libra/Orphus or Ophiuchus, the Messier or Virgo supercluster for Aquarius/Pisces/Cetus, the Andromeda Galaxy or the Casseiopiea cluster for Gemini/Cancer/Leo, and the antipodial galactic center (the Pleaides?) for Scorpio/Sagittarius/Capricorn.
The Sun and/or Moon are known to cross through parazodiac constellations of Andromeda/Pegasus, Perseus, Auriga, Sextans, Lynx, Lupus/Centaurus, Scutum, Fomalhaute, and Aquila on some occassions.
But the Decans or the one-thirds of the degree month table of planetary Decanates-according to William Lilly, the 17th century English astrologer- are also organized as shown (first 0-10 degree, second 10-20 deg. and third 20-30 deg.). The faces of the planets in dignity astrology, without the additional 3 to 6 "planets" discovered or classified in the following 4 centuries (the additions of Uranus or Neptune undecided, unless somebody on here are able to determine the additional co-ruling planets for each degrees). In my case, I have a Venus (1 Aquarius sidereal) or a Mars (26 degree Aquarius) decan:
ARIES: Mars, Sun and Venus; TAURUS: Mercury, Moon and Saturn; GEMINI: Jupiter, Mars and Sun;
CANCER: Venus, Mercury and Moon; LEO: Saturn, Jupiter and Mars; VIRGO: Sun, Venus and Mercury;
LIBRA: Moon, Saturn and Jupiter; SCORPIO: Mars, Sun and Venus; SAGITTARIUS: Mercury, Moon & Saturn;
CAPRICORN: Jupiter, Mars & Sun; AQUARIUS: Venus, Mercury and Mars; PISCES: Saturn, Jupiter and Mars.
For examples with 20-29 Aries has a Perseus part; while Taurus has a Hyades part (0-10 deg), then a Pleiades part (10-20 deg) & finally an Auriga part (20-30 deg).
From the wikipedia.org article on Decans
Notice that rulerships follow a repeating pattern, the so-called "Chaldaean" order of the planets: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon and the so-called 8th planet (Nibiru?). This planetary order, in which the Sun stands at the center of the continuum, with the planets between the Sun and the Earth on one side and the outer planets on the other side, reflected the perception of the speed of each planet's motion as seen from the Earth. Decans or "faces" are the least important of the essential dignities, representing about one-fifteenth of a planet's overall strength in medieval astrology.
Last edit and final statement on the topic: Uranus was occassionally seen by the naked eye in a very dark clear night sky, and something about Pluto (the IAU declared Charon to be a "double/binary planetoid") and Neptune were mistaken for being moons of Jupiter or Saturn by Galileo's telescope about 400 years ago: they had irregular orbits or closer to the earth in the past when the Mesopotamian civilizations (i.e. Sumeria, Akkadia or Chaldea) existed from 3000-5000 years ago.
EDIT: I made this post 3 years ago (can't believe I found it tonight!) The only thing I disagree now is I'm for the idea of Eris co-rulership of Taurus and Gemini, and Ceres co-rulership of Virgo and Libra. There should be considerations of asteroids Juno, Pallas and Vesta if they have any rulerships of the astrological zodiac, if so I would know which signs they could affect.