The most common and most likely answer to this crossword clue is the 13 letter word CONSTELLATION
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More clues leading to the result CONSTELLATION
- Groups of stars interfered with colonial’s tent
- Tories inform country to snub new stars
- Twins, perhaps, sent out during light meal
- Number of stars misbehaving, so I cannot tell
- Trick woman into cooking for stars
- Hercules, perhaps, to clean silt on bananas
- Location sent out about large group of stars
- Fools give away leaderless land to a bunch of stars
- Celebrity’s foremost lot on an islet, cavorting group of stars
- Stars sent bananas during light meal
Buddy explains!

The straight part
We know that "Number of stars" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case number of stars = constellation.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONSTELLATION mean?
CONSTELLATION noun- An asterism, an arbitrary formation of stars perceived as a figure or pattern, or a division of the sky including it, especially one officially recognised by astronomers.
- An image associated with a group of stars.
- The configuration of planets at a given time (notably of birth), as used for determining a horoscope.
- A wide, seemingly unlimited assortment.
- A fleet of satellites of the same purpose (such as the set of GPS satellites, or Iridium satcom fleet).
- A configuration or grouping.
- A network of connections that exists between people who are in polyamorous relationships, for example between one person, their partner, and that person's partner.