Zodiac celestial coordinate system, or more specifically an ecliptic coordinate system, which takes the ecliptic as the origin of latitude and the Sun's position at vernal equinox as the origin of longitude. The English word ' derives from ', the Latinized form of the Ancient Greek "zōidiakòs kýklos" (), meaning "cycle or circle of little animals". "Zōidion" () is the diminutive of "zōion" (, "animal"). The name reflects the prominence of animals (and mythological hybrids) among the twelve signs. The zodiac was in use by the Roman era, based on concepts inherited by Hellenistic astronomy from Babylonian astronomy of the Chaldean
Ivan (name) It is the Slavic relative of the Latin name "Johannes", corresponding to English "John". This Slavic version of the name originates from New Testament Greek "" ("Iōánnēs") rather than from the Latin "Io(h)annes". The Greek name is in turn derived from Hebrew יוֹחָנָן ("Yôḥānān"), meaning "YHWH (God) is gracious". The name is ultimately derived from the Biblical Hebrew name יוחנן (), short for יהוחנן (), meaning "God is merciful". Common patronymics derived from the name are Ivanović (Serbo-Croatian), Ivanov (Russian and Bulgarian), and Ivanovich (Russian, used as middle name), corresponding to "Ivan's son". The name is common among Russians, Ukrainians,