R. A. Jacobson, V. Lainey (2014) "Martian Satellite Orbits and Ephemerides". Planet. Space Sci. 102:35-44. D. Durante, M. Parisi, D. Serra, M. Zannoni, V. Notaro, P. Racioppa, D. R. Buccino, G. Lari, L. Gomez Casajus, L. Iess, W. M. Folkner, G. Tommei, P. Tortora, S. J. Bolton (2020) "Jupiter's Gravity Field Halfway Through the Juno Mission". Geophys. Res. Lett. 47:e86572. Ephemeris meaning in Latin is diary or journal. Since ancient times, the current planetary positions on a given date (Grah position or Grah Stithi) have been assigned printed values in a tabular format. These attributes tend to change from time to time with the change in the trajectory of the celestial bodies. As a result, such a tabular compilation would usually last for a day only to be replaced by new values on the following day. Such a diary was, therefore, termed as Planetary Ephemeris.

A 1801 A 1802 A 1803 A 1804 A 1805 A 1806 A 1807 A 1808 A 1809 A 1810 A 1811 A 1812 A 1813 A 1814 A 1815 A 1816 A 1817 A 1818 A 1819 A 1820 A 1821 A 1822 A 1823 A 1824 A 1825 A 1826 A 1827 A 1828 A 1829 A 1830 A 1831 A 1832 A 1833 A 1834 A 1835 A 1836 A 1837 A 1838 A 1839 A 1840 A 1841 A 1842 A 1843 A 1844 A 1845 A 1846 A 1847 A 1848 A 1849 A 1850 A 1851 A 1852 A 1853 A 1854 A 1855 A 1856 A 1857 A 1858 A 1859 A 1860 A 1861 A 1862 A 1863 A 1864 A 1865 A 1866 A 1867 A 1868 A 1869 A 1870 A 1871 A 1872 A 1873 A 1874 A 1875 A 1876 A 1877 A 1878 A 1879 A 1880 A 1881 A 1882 A 1883 A 1884 A 1885 A 1886 A 1887 A 1888 A 1889 A 1890 A 1891 A 1892 A 1893 A 1894 A 1895 A 1896 A 1897 A 1898 A 1899 A A special favour for our friend Karl Weber in Unterhaching. He uses planetary and midpoint ephemerides in the 22°30 (modulo 16) system. Here they are. Have fun!M. Brozovic (2023) "Ephemerides of the 15 new jovian irregulars — JUP346". personal communication to Horizons/NAIF. BCE• 5000 BC 4950 BC 4900 BC 4850 BC 4800 BC 4750 BC 4700 BC 4650 BC 4600 BC 4550 BC 4500 BC 4450 BC 4400 BC 4350 BC 4300 BC 4250 BC 4200 BC 4150 BC 4100 BC 4050 BC 4000 BC 3950 BC 3900 BC 3850 BC 3800 BC 3750 BC 3700 BC 3650 BC 3600 BC 3550 BC 3500 BC 3450 BC 3400 BC 3350 BC 3300 BC 3250 BC 3200 BC 3150 BC 3100 BC 3050 BC 3000 BC 2950 BC 2900 BC 2850 BC 2800 BC 2750 BC 2700 BC 2650 BC 2600 BC 2550 BC 2500 BC 2450 BC 2400 BC 2350 BC 2300 BC 2250 BC 2200 BC 2150 BC 2100 BC 2050 BC 2000 BC 1950 BC 1900 BC 1850 BC 1800 BC 1750 BC 1700 BC 1650 BC 1600 BC 1550 BC 1500 BC 1450 BC 1400 BC 1350 BC 1300 BC 1250 BC 1200 BC 1150 BC 1100 BC 1050 BC 1000 BC 950 BC 900 BC 850 BC 800 BC 750 BC 700 BC 650 BC 600 BC 550 BC 500 BC 450 BC 400 BC 350 BC 300 BC 250 BC 200 BC 150 BC 100 BC 50 BC Heliocentric 21st Century 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 R. A. Jacobson (2020) "Ephemerides for the final comprehensive Cassini reconstruction — SAT427". personal communication to Horizons/NAIF.

M. Brozović, R. A. Jacobson, S. S. Sheppard (2011) "The Orbits of the Outer Neptunian Satellites". AJ 141:135. R. A. Jacobson (2021) "Ephemerides of the unnamed Saturnian irregulars including the newly discovered S/2019~S1 — SAT450". personal communication to Horizons/NAIF. M. Brozović (2021) "Update of the inner Neptunian satellite orbits — NEP100". personal communication to Horizons/NAIF.R. A. Jacobson (2021) "The Orbits of the Regular Jovian Satellites and the Orientation of the Pole of Jupiter". personal communication to Horizons/NAIF. R. A. Jacobson (2020) "The Orbits of the Regular Jovian Satellites, the Trajectories of Spacecraft at Jupiter, the Gravity Field of the Jovian System, and the Orientation of the Pole of Jupiter". Interoffice Memo. 392R-20-006 (internal document). R. A. Jacobson (2022) "The Orbits of the Main Saturnian Satellites, the Saturnian System Gravity Field, and the Orientation of Saturn's Pole". AJ 164:199-217. A 1771 A 1772 A 1773 A 1774 A 1775 A 1776 A 1777 A 1778 A 1779 A 1780 A 1781 A 1782 A 1783 A 1784 A 1785 A 1786 A 1787 A 1788 A 1789 A 1790 A 1791 A 1792 A 1793 A 1794 A 1795 A 1796 A 1797 A 1798 A 1799 A

Heliocentric 20th Century 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 A 2001 A 2002 A 2003 A 2004 A 2005 A 2006 A 2007 A 2008 A 2009 A 2010 A 2011 A 2012 A 2013 A 2014 A 2015 A 2016 A 2017 A 2018 A 2019 A 2020 A 2021 A 2022 A 2023 A 2024 A 2025 A 2026 A 2027 A 2028 A 2029 A 2030 A 2031 A 2032 A 2033 A 2034 A 2035 A 2036 A 2037 A 2038 A 2039 A 2040 A 2041 A 2042 A 2043 A 2044 A 2045 A 2046 A 2047 A 2048 A 2049 A JK) 1500-1599(GK) 1600-1699 1700-1799 1800-1899 1900-1999 2000-2099 2100-2199 2200-2299 2300-2399 2400-2499 2500-2599 2600-2699 2700-2799 2800-2899 2900-2999 3000-3099 3100-3199 3200-3299 3300-3399 3400-3499 3500-3599 3600-3699 3700-3799 3800-3899 3900-3999 4000-4099 4100-4199 4200-4299 4300-4399 4400-4499 4500-4599 4600-4699 4700-4799 4800-4899 4900-4999 The middle column lists Lunar Ingresses, showing dates and times that the Moon changes zodiac sign, and Void Moon data. A 1901 A 1902 A 1903 A 1904 A 1905 A 1906 A 1907 A 1908 A 1909 A 1910 A 1911 A 1912 A 1913 A 1914 A 1915 A 1916 A 1917 A 1918 A 1919 A 1920 A 1921 A 1922 A 1923 A 1924 A 1925 A 1926 A 1927 A 1928 A 1929 A 1930 A 1931 A 1932 A 1933 A 1934 A 1935 A 1936 A 1937 A 1938 A 1939 A 1940 A 1941 A 1942 A 1943 A 1944 A 1945 A 1946 A 1947 A 1948 A 1949 A 1950 A 1951 A 1952 A 1953 A 1954 A 1955 A 1956 A 1957 A 1958 A 1959 A 1960 A 1961 A 1962 A 1963 A 1964 A 1965 A 1966 A 1967 A 1968 A 1969 A 1970 A 1971 A 1972 A 1973 A 1974 A 1975 A 1976 A 1977 A 1978 A 1979 A 1980 A 1981 A 1982 A 1983 A 1984 A 1985 A 1986 A 1987 A 1988 A 1989 A 1990 A 1991 A 1992 A 1993 A 1994 A 1995 A 1996 A 1997 A 1998 A 1999 AThis monthly ephemeris is based on the Tropical Zodiac. It lists planetary positions by sign and degree on a daily basis at midnight Eastern Time. Note that Eastern Time is 5 hours from UT. For instance, the astronomers following astronomical events of solar and lunar eclipses, planets retrograde and terrestrial events impacted by the cosmic alignment of stars and planets are interested in knowing the time of their happening. R. A. Jacobson (2014) "Update of the irregular Uranian satellite orbits with data through 2013 — URA112". personal communication to Horizons/NAIF. A scientific Ephemeris shows planetary positions’ current overview using the spherical polar coordinate system, a system used by mathematicians and physicians on a variety of applications to plot the trajectory of a moving body. The current planetary positions are then used in preparing maps of stars in the sky, and telescopes. In astronomy, it finds use in determining the movement and the centre of the planets, stars and galaxies.