Charles Messier was a French astronomer. He published an astronomical catalogue consisting of 110 nebulae and star clusters, which came to be known as the Messier objects, referred to with the letter M and their number between 1 and 110. Messier's purpose for the catalogue was to help astronomical observers distinguish between permanent and transient visually diffuse objects in the sky.
Horace Parnell Tuttle was an American astronomer, an American Civil War veteran and brother of astronomer Charles Wesley Tuttle.
Maximilian Franz Joseph Cornelius Wolf was a German astronomer and a pioneer in the field of astrophotography. He was the chairman of astronomy at the University of Heidelberg and director of the Heidelberg-Königstuhl State Observatory from 1902 until his death in 1932.
Edward Emerson Barnard was an American astronomer. He was commonly known as E. E. Barnard, and was recognized as a gifted observational astronomer. He is best known for his discovery of the high proper motion of Barnard's Star in 1916, which is named in his honor.
Maria Mitchell was an American astronomer, librarian, naturalist, and educator. In 1847, she discovered a comet named 1847 VI that was later known as "Miss Mitchell's Comet" in her honor. She won a gold medal prize for her discovery, which was presented to her by King Christian VIII of Denmark in 1848. Mitchell was the first internationally known woman to work as both a professional astronomer and a professor of astronomy after accepting a position at Vassar College in 1865. She was also the first woman elected Fellow of the American Academy of Arts and Sciences and the American Association for the Advancement of Science.
David Howard Levy is a Canadian amateur astronomer, science writer and discoverer of comets and minor planets, who co-discovered Comet Shoemaker–Levy 9 in 1993, which collided with the planet Jupiter in 1994.
William Robert Brooks was a British-born American astronomer, mainly noted as being one of the most prolific discoverers of new comets of all time, second only to Jean-Louis Pons.
Robert H. McNaught is a Scottish-Australian astronomer at the Research School of Astronomy and Astrophysics of the Australian National University (ANU). He has collaborated with David J. Asher of the Armagh Observatory.
Carl Ernst Albrecht Hartwig was a German astronomer.
John Edward Mellish was an American amateur astronomer and telescope builder.
Miss Mitchell's Comet, formally designated as C/1847 T1, is a non-periodic comet that American astronomer Maria Mitchell discovered in 1847.
Comet McNaught can refer to any one of more than 50 comets discovered by the astronomer Robert H. McNaught.
Comet Brooks may refer to any one of 17 comets:
206P/Barnard–Boattini was the first comet to be discovered by photographic means. The American astronomer Edward Emerson Barnard did so on the night of October 13, 1892. After this apparition this comet was lost and was thus designated D/1892 T1. Ľuboš Neslušan suggests that 14P/Wolf and this comet are siblings which stem from a common parent comet.
D/1770 L1, popularly known as Lexell's Comet after its orbit computer Anders Johan Lexell, was a comet discovered by astronomer Charles Messier in June 1770. It is notable for having passed closer to Earth than any other comet in recorded history, approaching to a distance of only 0.015 astronomical units, or six times the distance from the Earth to the Moon. The comet has not been seen since 1770 and is considered a lost comet.
A lost comet is one which was not detected during its most recent perihelion passage. This generally happens when data is insufficient to reliably calculate the comet's location or if the solar elongation is unfavorable near perihelion passage. The D/ designation is used for a periodic comet that no longer exists or is deemed to have disappeared.
The Great Southern Comet of 1887, or C/1887 B1 using its International Astronomical Union (IAU) designation, was a bright comet seen from the Southern Hemisphere during January 1887. Later calculations indicated it to be part of the Kreutz Sungrazing group. It came to perihelion on 11 January 1877 at a distance of 0.00483 AU (723 thousand km) with a velocity of 606.1 km/s. Since the Sun has a radius of 696000 km, the comet passed about 27000 km from the surface of the Sun.
Comet Boattini can refer to any comets discovered by the astronomer Andrea Boattini:
Comet Barnard–Denning, also known as C/1891 F1 by its modern nomenclature, is a parabolic comet that was observed through telescopes between March and July 1891. It was discovered by American astronomer, Edward Emerson Barnard, and British astronomer, William Frederick Denning.
Comet Denning, or Denning's Comet, may refer to any of the three comets discovered by British astronomer, William Frederick Denning, below:
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