Uranus

Uranus was discovered by William Herschel on 13 March 1781 from his garden in Bath, the first planet found in recorded history; every body known before it had been visible to the unaided eye since antiquity. Herschel initially took it for a comet, and proposed to name it Georgium Sidus after George III, but the name Uranus, suggested by Johann Bode after the Greek sky god who was father of Kronos, prevailed. It takes about eighty-four years to circle the zodiac, roughly seven years to a sign, and its axis is tipped over more than ninety degrees so that it effectively rolls along its orbit, a peculiarity modern astrology has been happy to make symbolic use of. Any astrological meaning it carries is therefore less than two and a half centuries old and cannot be found in Ptolemy, in the Arabic authors or in Lilly.

Because its astrological meaning is under two and a half centuries old, Uranus appears in no source before Herschel's 1781 discovery, and the essential-dignity table most classical and traditional astrologers still use assigns it no rulership at all, keeping Aquarius under Saturn alone as it was reckoned for roughly two thousand years before the eighteenth century; the widespread modern practice of giving Uranus co-rulership or outright rulership of Aquarius is a nineteenth-century innovation layered onto, rather than replacing, the older dignity scheme. The proposed alternative name Georgium Sidus, honouring King George III, was used in Britain for decades after the discovery before the mythological name Uranus, suggested by the German astronomer Johann Bode, became the international standard, making Uranus the only planet named for a Greek rather than Roman deity, since Ouranos has no separate Roman form distinct from the sky itself.

Nineteenth and twentieth century astrologers assigned Uranus the significations of sudden change, disruption, invention, electricity, rebellion and the breaking of established form, and this was reinforced by the coincidence of its discovery with the American and French revolutions and the early industrial revolution, an argument that is rhetorically effective and evidentially weak. Most modern astrology gives Uranus the rulership of Aquarius, displacing or sharing with Saturn. Traditional practitioners, and the revived Hellenistic and medieval schools of the last thirty years, generally decline the reassignment on the grounds that the system of domiciles is built on a coherent geometry of the two luminaries and the five visible planets which the addition of further bodies breaks. Both positions are held by serious practitioners, and the honest description is that this is an open and unresolved disagreement within astrology rather than a settled doctrine.

Two facts about the planet itself bear on the argument. Its orbit takes about 84 years, so it spends roughly seven years in each sign and everyone born within a few years of each other shares its placement; whatever it signifies, it cannot signify anything individual without the house and the aspects to localise it. And it was not invisible before 1781. At magnitude 5.7 at its brightest Uranus is at the edge of naked eye visibility, and John Flamsteed recorded it as a star in 1690, cataloguing it as 34 Tauri, one of several such sightings by observers who had no reason to look twice. It was discoverable for as long as anyone had been looking; what changed in 1781 was recognition, not visibility.

Uranus was discovered by William Herschel in 1781 and taken into astrological practice thereafter. Its glyph combines a circle and cross with a vertical stroke, one common form incorporating the letter H in honour of Herschel. That form comes from the French astronomer Jerome Lalande, who described his proposal in a letter to Herschel himself as "a globe surmounted by the first letter of your name," a rare case among the classical and near-classical planetary glyphs where the inventor's own explanation of the design survives directly rather than being reconstructed by later scholars.

Because Uranus was discovered too late to receive a sign in antiquity, and because its two competing glyphs, Lalande's monogram and the earlier platinum symbol combining the signs for iron and gold, continued to coexist rather than one simply replacing the other, Unicode eventually encoded both: the monogram form entered the standard with the rest of the astrological set in 1991, while the separate astronomical symbol for Uranus, closer to the platinum design, was added only in Unicode's sixth version in 2010, nearly two decades later. Uranus is consequently the only classical or near-classical planet with two formally distinct Unicode codepoints for its own sign, a small but telling trace, in the character-encoding standard itself, of a naming and symbol dispute that was never fully resolved between the astronomers and the astrologers who each kept the design that suited them.