Bessel's day numbers
plural noun
variants
or Bessel's star numbers
: four numbers, A, B, C, D, constant for all stars, whose logarithms are tabulated for different dates and used in calculating the apparent change in right ascension and declination for any date from any date
Dictionary Entries Near Bessel's day numbers
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“Bessel's day numbers.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Bessel%27s%20day%20numbers. Accessed 28 Nov. 2024.
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