NGC 2477 is an open cluster in the Puppis constellation, consisting of about 300 stars, which was discovered by Abbe Lacaille in 1751. An open cluster is a group of up to a few thousand Stars that were formed from the same Giant molecular cloud, and are still loosely gravitationally Puppis (ˈpʌpɪs Poop deck) is a southern Constellation. It is the largest of the three parts into which Argo Navis was split (the other two being Abbé Nicolas Louis de Lacaille ( March 15, 1713 &ndash March 21, 1762) was a French Astronomer. Year 1751 ( MDCCLI) was a Common year starting on Friday (link will display the full calendar of the Gregorian calendar (or a The cluster's age has been estimated at about 700 million years.
Stars
- L2 Pup
a red giant which brightness varies from 3rd to 6th magnitude every ~140 years. A red giant is a luminous Giant star of low or intermediate mass (roughly 0 The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value
- V Pup
is an eclipsing binary system consisting of a B1 main sequence star and a B3 subgiant. Its magnitude goes down from 4. 5 mag to 5. 1 mag every 35 hours when the fainter star crosses the brighter one in the line of sight.
- ξ (xi) Pup
is a yellow supergiant of 3. Xi (uppercase Ξ, lowercase ξ) is the 14th letter of the Greek alphabet. 34 mag. When viewed through binoculars, an unrelated companion can be seen. Binocular telescopes, or binoculars (also known as field glasses are two identical or Mirror - symmetrical telescopes mounted side-by-side and
- κ (kappa) Pup is a double star consisting of two nearly identical blue-white stars of 4. Kappa (uppercase &Kappa, lowercase &kappa or ϰ; Κάππα is the 10th letter of the Greek alphabet, used to represent the Voiceless Double Star is a Science fiction Novel by Robert A Heinlein, first serialized in Astounding Science Fiction 5 and 4. 6 mag
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