Errata 2017


Phenomena, Section A

  • Page A2, Occultations of X-ray sources by the Moon:

    A table of occultations of X-ray sources by the Moon has not been available on The Astronomical Almanac Online.

Natural Satellites, Section F

  • Pages F6, F8, F40, F47, F50, F51; orbital periods of certain bodies

    The values for the orbital periods given on F2 and F4 occasionally do not match similar data given on F6, F8, F40, F47, F50, or F51. In all cases, the values on F2 and F4 are the most up-to-date.

  • Page F43, Satellites of Saturn:

    Under the Western Elongation for Titan, replace the last entry (Dec 41) with Dec 45 03.4 hours. Under the Superior Conjuntion for Titan, delete the last entry (Dec 45) in its entirety.

Dwarf Planets and Small Solar System Bodies, Section G

  • Page G7, Pluto, Geocentric Positions for 0h Terrestrial Time

    The values given for the ecliptic longitude, Ls, are in error by 180°.

The Astronomical Almanac Online! 2020