33 relations: Apparent magnitude, CK Vulpeculae, CRC Press, DM Geminorum, Dorrit Hoffleit, Edward Charles Pickering, Frank Schlesinger, GK Persei, Globular cluster, Harvard College Observatory, Ida Barney, John Adelbert Parkhurst, Kepler's Supernova, Messier 67, NGC 2281, NGC 2808, Nova, Open cluster, Photometry (astronomy), Q Cygni, Sky & Telescope, SN 1572, SN 1885A, Solon Irving Bailey, Star catalogue, Supernova, T Aurigae, T Coronae Borealis, Taylor & Francis, The New York Times, Yale University, Yale University Observatory, 47 Tucanae.
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
CK Vulpeculae (also Nova Vulpeculae 1670) may be the oldest cataloged nova variable.
The CRC Press, LLC is a publishing group based in the United States that specializes in producing technical books.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
DM Geminorum or Nova Geminorum 1903 was a nova, discovered by Herbert Hall Turner in 1903 in the constellation Gemini and reached a brightness of 4.8 mag.
Ellen Dorrit Hoffleit (March 12, 1907 – April 9, 2007) was an American senior research astronomer at Yale University.
Prof Edward Charles Pickering FRS(For) HFRSE (July 19, 1846 – February 3, 1919) was an American astronomer and physicist and the older brother to William Henry Pickering.
Frank Schlesinger (May 11, 1871 New York City – July 10, 1943 Old Lyme, Connecticut) was an American astronomer.
GK Persei (also Nova Persei 1901) was a bright nova occurring in 1901.
A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite.
The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy.
Ida Barney (November 6, 1886 – March 7, 1982) was an American astronomer, best known for her 22 volumes of astrometric measurements on 150,000 stars.
John Adelbert Parkhurst (September 24, 1861 – March 1, 1925) was an American astronomer.
SN 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus.
Messier 67 (also known as M67 or NGC 2682) is an open cluster in the constellation of Cancer.
NGC 2281 is an open cluster in the constellation Auriga.
NGC 2808 is a globular cluster in the constellation Carina.
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
A nova (plural novae or novas) or classical nova (CN, plural CNe) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star, that slowly fades over several weeks or many months.
An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.
Photometry is a technique of astronomy concerned with measuring the flux, or intensity of an astronomical object's electromagnetic radiation.
Q Cygni (Q Cyg), is a star located in the constellation Cygnus.
Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy, including the following.
SN 1572 (Tycho's Supernova, Tycho's Nova), or B Cassiopeiae (B Cas), was a supernova of Type Ia in the constellation Cassiopeia, one of about eight supernovae visible to the naked eye in historical records.
Solon Irving Bailey (December 29, 1854 in Lisbon, New Hampshire – June 5, 1931 in Norwell, Massachusetts) was an American astronomer and discoverer of the main-belt asteroid 504 Cora, on June 30, 1902.
A star catalogue (Commonwealth English) or star catalog (American English), is an astronomical catalogue that lists stars.
A supernova (plural: supernovae or supernovas, abbreviations: SN and SNe) is a transient astronomical event that occurs during the last stellar evolutionary stages of a star's life, either a massive star or a white dwarf, whose destruction is marked by one final, titanic explosion.
T Aurigae (or Nova Aurigae 1891) was a nova, which lit up in the constellation Auriga in 1891.
T Coronae Borealis (T CrB), is a recurring nova in the constellation Corona Borealis.
Taylor & Francis Group is an international company originating in England that publishes books and academic journals.
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
Yale University is an American private Ivy League research university in New Haven, Connecticut.
The Yale University Observatory, also known as the Leitner Family Observatory and Planetarium, is an astronomical observatory owned and operated by Yale University, and maintained for student use.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
47 Tucanae, 47 Tuc (or NGC 104) is a globular cluster located in the constellation Tucana.
1964BS....C......0H, Bright Star Catalog, Catalogue of bright stars, HR catalog, HR catalogue, HR number, HR star catalog, HR star catalogue, Harvard Photometry, Harvard Photometry Catalogue, Harvard Revised Catalog, Harvard Revised Catalogue, Harvard Revised Photometry, Harvard Revised Photometry Catalog, Harvard Revised Photometry Catalogue, Harvard Revised catalog, Harvard Revised catalogue, Revised Harvard Photometry, VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H, YBSC, Yale Bright Star, Yale Bright Star Catalog, Yale Bright Star Catalogue, Yale Catalogue of Bright Stars.