22 relations: American Association of Variable Star Observers, Andromeda (constellation), Andromeda Galaxy, Belfast, Coordinated Universal Time, Durchmusterung, Epoch (astronomy), Ernst Hartwig, Estonia, Galaxy, Gérard de Vaucouleurs, Hubble Space Telescope, Kitt Peak, Light-year, Milky Way, Nicholas U. Mayall Telescope, Spectrum, Supernova, Tartu Observatory, Type Ia supernova, Variable star designation, 2MASS.
Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.
Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.
The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth.
New!!: SN 1885A and Andromeda Galaxy ·
Belfast is the capital and largest city of Northern Ireland (United Kingdom).
New!!: SN 1885A and Belfast ·
Coordinated Universal Time (temps universel coordonné), abbreviated as UTC, is the primary time standard by which the world regulates clocks and time.
In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.
New!!: SN 1885A and Durchmusterung ·
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
New!!: SN 1885A and Epoch (astronomy) ·
Carl Ernst Albrecht Hartwig (14 January 1851 in Frankfurt – 3 May 1923 in Bamberg) was a German astronomer.
New!!: SN 1885A and Ernst Hartwig ·
Estonia (Eesti), officially the Republic of Estonia (Eesti Vabariik), is a country in the Baltic region of Northern Europe.
New!!: SN 1885A and Estonia ·
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas and dust, and dark matter.
New!!: SN 1885A and Galaxy ·
Gérard Henri de Vaucouleurs (25 April 1918 – 7 October 1995) was a French astronomer.
New!!: SN 1885A and Gérard de Vaucouleurs ·
The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990, and remains in operation.
New!!: SN 1885A and Hubble Space Telescope ·
Kitt Peak (Ioligam) is a mountain in the U.S. state of Arizona, and at is the highest point in the Quinlan Mountains.
New!!: SN 1885A and Kitt Peak ·
A light-year (abbreviation: ly), sometimes written light year, is a unit of length used informally to express astronomical distances.
New!!: SN 1885A and Light-year ·
The Milky Way is the galaxy that contains our Solar System.
New!!: SN 1885A and Milky Way ·
The Nicholas U. Mayall Telescope, also known as the Mayall 4-meter Telescope, is a four meter reflector telescope located at the Kitt Peak National Observatory and named after Nicholas U. Mayall.
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary infinitely within a continuum.
New!!: SN 1885A and Spectrum ·
A supernova is a stellar explosion that briefly outshines an entire galaxy, radiating as much energy as the Sun or any ordinary star is expected to emit over its entire life span, before fading from view over several weeks or months.
New!!: SN 1885A and Supernova ·
The Tartu Observatory (Tartu Observatoorium) is the largest astronomical observatory in Estonia.
New!!: SN 1885A and Tartu Observatory ·
Type Ia supernovae occur in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf while the other can vary from a giant star to an even smaller white dwarf.
New!!: SN 1885A and Type Ia supernova ·
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
The Two Micron All-Sky Survey (2MASS) was a survey of the whole sky in three infrared wavebands around 2 micrometres (μm): J (1.25 μm), H (1.65 μm), and Ks (2.17 μm).
New!!: SN 1885A and 2MASS ·