Variable-star nomenclature: the Argelander system (was Novae, etc.)
- --- "Diana K. Rosenberg" <ye-stars@...>
> Mark sent:This is called the star's Argelander designation,
> It seems a good many novae have been put in the
> category by astronomers.
> CP Lacertae hit magnitude +2.1 in 1936, and CP
> Puppis hit magnitude
> +0.3 in 1942.
> Wow - that's pretty bright - especially CP Puppis.
> What does "CP"
> stand for - do you know?
after Friedrich Argelander, the Lithuanian-born
German-Finnish astronomer who developed this naming
system for variable stars in the mid-19th-century. He
gave letters of the Roman alphabet to variable stars,
starting with R, and moving on to S, T, U, etc., and
after Z the system goes on to RR, RS, RT, and so
forth, until QZ is reached; the letter J isn't used.
Past QZ astronomers start using alphanumeric
designations, V plus a number which indicates the
variable's order of discovery, e.g., V322 Orionis.
> Here's a Wikipedia page on novae that includes a
> list of novae that
> attained seventh magnitude and up since 1891, more
> objects for my
> fixed-stars lists (probably the novae page, too,
> once I can get a
> handle on their astrological influence).
> And this is the Wikipedia supernova page.
> Thank you for these! I've copied both pages into my
> files - very
Mark A. Holmes
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