31 Crateris is a binary star system in the constellation Corvus. Varying between apparent magnitudes 5.19 and 5.23 over 1.48 days, it has the variable star designation of TY Corvi. [3] It is actually a remote system with a hot blue-white star of spectral type B1.5V and a companion about which little is known.

A "moon" was detected moving away from Mercury in 1974, and was eventually identified as a background star, 31 Crateris. 31 Crateris is a spectroscopic binary with a period of 2.9 days, and this may have been the source of the ultraviolet radiation detected in 1974. [6]

31 Crateris is a blue subgiant star in the constellation of Corvus. It can be seen in the southern hemisphere night sky. 31 Crateris distance from Earth is 3166.63 light years away.

31 Crateris (which was originally placed in Crater by Flamsteed) is a 5.26 magnitude star which was once mistaken for a moon of Mercury. On 27 March 1974, the Mariner 10 mission detected emissions in the far ultraviolet from the planet (suggesting a satellite), but they were found to emanate from the star.

New observational clues to understand macroturbulent broadening in massive O- and B-type stars.

A naked-eye star is a star that can be seen in the night sky without using binoculars or a telescope. As a guide, the nearest naked-eye star to Antennae Galaxies is 31 Crateris. Although visible eye stars can reach 6.5 in magnitude, the dimmest star for this will be 6.0.

Jun 11, 2024 · 31 Crateris (which was originally numbered in Crater) is a 5.2 magnitude star which was once mistaken for a moon of Mercury. Corvus has no Messier objects. The Antennae galaxies are made up of two galaxies that are colliding, NGC 4038 and NGC 4039. It has a heart shape as seen from Earth.

Sep 25, 2019 · And the “moon” itself? It headed straight on out from Mercury, and was eventually identified as a hot star, 31 Crateris. What the original emissions came from, the ones spotted on the approach to the planet, remains a mystery.

31 Crateris is a binary star system in the constellation Corvus. Varying between apparent magnitudes 5.19 and 5.23 over 1.48 days, it has the variable star designation of TY Corvi. [3] It is actually a remote system with a hot blue-white star of spectral type B1.5V and a companion about which little is known.

Eta Crateris lies in the sky NE of Zeta Crateris and NNW of 31 Crateris, the three stars forming an almost perfect right triangle with Eta at the right angle and 31 and Zeta the ends of the hypotenuse. Eta Crateris also lies to the right (west) of the bright star Gamma Corvi.