Although many speculations concerning the reasoning behind it have been put forth over the centuries, there are, as Robert Hand has said, still anomalies that are almost impossible to explain with any consistency, such as the exaltation of vigorous Mars in cold Capricorn. The Western sidereal astrologer, Cyril Fagan, has speculated that the planets all rose heliacally at these degrees in the year of the erection of an important temple to the Babylonian god Nabu in the year 786 BC, but this is still very speculative. Since in Hellenistic astrology aspects were generally recognised from sign to sign, it is uncertain whether the distance of a planet from the exact degree of exaltation had much significance. However, the degree itself was used by ancient astrologers; for example, the exact degree of exaltation of each of the luminaries (the Sun and Moon) was used in the formula for the Hellenistic Lot of Exaltation. In later Medieval astrology, influenced by the Arab and Byzantine, a hierarchy of all five essential dignities was favored, in which the most important dignity was that of the domicile ruler, followed in importance by exaltation. Medieval astrologers assigned numerical values to each dignity in the hierarchy, and these were tabulated to provide a rough statistical mode of comparison (see Essential dignity.) These weighted valuations are still in use today by astrologers. After the discovery of the three outer planets--Uranus, Neptune, and Pluto—modern astrologers speculated on possible domicile and exaltation rulerships for these planets. It was suggested, for example, that Neptune was the "true" domicile ruler of Pisces (usurping one of Jupiter's two domicile rulerships). The ancient system was complex and symmetrical, making no allowance for additional, unseen planets, and it is difficult to include them in traditional techniques. Most modern astrologers have therefore abandoned attempts to assign exaltations to these newer planets. Traditional Hindu Astrology, based the notion of exaltation primarily on the stellar constellations, also called Nakshatras, in which the planet fell. There are 27 Nakshatras present in the Sidereal Zodiac. Taking 360°/27 results in a precise arc of 13° 20′ per Nakshatra, remembering that 60′ constitute 1°. For example, although Jupiter is exalted in Cancer there are 3 different Nakshatras Jupiter could occupy within the 30° arc of Cancer, namely, Punarvasu (20°00′ Gemini to 3°20 Cancer), Pushya (3°20′ to 16°40′ Cancer), and Ashlesha (16°40′ to 29°59′ Cancer). Since Jupiter is exalted at 5° Cancer this