LTT

LTT is an initialism for the following:

ADS 48

ADS 48 is a multiple star system in the constellation of Andromeda consisting of 7 stars. The components, in order from A to G, have apparent visual magnitudes of 8.83, 9.00, 13.30, 12.53, 11.68, 9.97, and 13.00.

ADS 48A and ADS 48B are in orbital motion around each other while ADS 48F is a common proper motion companion. The others are unassociated background stars.

References

31 Arietis

31 Arietis (abbreviated 31 Ari) is a binary star in the northern constellation of Aries. 31 Arietis is the Flamsteed designation. The two members of this system orbit each other with a period of 1.924 years and an eccentricity of 0.88. The primary component is an F-type main sequence star with a stellar classification of F7 V. The pair have an apparent visual magnitude of 5.75, which is just bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 28.79 mas, the distance to this system is approximately 113 light-years (35 parsecs).

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