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C/1883 D1 (Brooks–Swift)

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For other comets discovered by William R. Brooks and Lewis A. Swift, see Comet Brooks and Comet Swift.
C/1883 D1 (Brooks–Swift)
Discovery
Discovered byWilliam R. Brooks
Lewis A. Swift
Discovery siteNew York, USA
Discovery date24 February 1883
Designations
1883a[1]
1883 I
Orbital characteristics[2]
Epoch12 March 1883 (JD 2408881.5)
Observation arc31 days
Number of
observations		9
Perihelion0.760 AU
Eccentricity1.000077
Inclination78.066°
279.77°
Argument of
periapsis		110.89°
Last perihelion19 February 1883
Earth MOID0.110 AU
Jupiter MOID1.824 AU
Physical characteristics
6.0–7.0[a]
(1883 apparition)

Comet Brooks–Swift, also known as C/1883 D1 by its modern nomenclature, is a hyperbolic comet that was visible telescopically to Earth in the early months of 1883. It was discovered independently by two American astronomers, William Robert Brooks and Lewis A. Swift.[3]

Discovery and observations

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The comet was discovered on the morning of 24 February 1883 in the constellation Pegasus.[b] Both Brooks and Swift spotted the comet about 25 minutes from one another, with initial orbital calculations suggesting it already passed perihelion on 19 February.[4][5]

Nikolaus von Konkoly made spectroscopic observations of the comet on 3 March, two days after it made its closest approach to Earth at a distance of 1.156 AU (172.9 million km).[6] Seth C. Chandler, Jr. watched the comet occult an 8th-magnitude star on the night of 5 March, which enabled him to measure the comet's apparent magnitude at the time.[7] By late March, the comet started to fade away rapidly, until it was last observed within the constellation Orion on 24 April 1883.[3]

References

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Notes

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  1. ^ There are no estimates for the comet's total magnitude were recorded,[3] except for the central condensation of its nucleus.
  2. ^ Reported initial position upon discovery was: α = 22h 50m , δ = 28° 00′[3]

Citations

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  1. ^ "Comet Names and Designations". International Comet Quarterly. Retrieved 1 January 2025.
  2. ^ "C/1883 D1 (Brooks–Swift) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 1 January 2025.
  3. ^ a b c d G. W. Kronk (2003). Cometography: A Catalog of Comets. Vol. 2: 1800–1899. Cambridge University Press. pp. 518–520. ISBN 978-0-521-58505-7.
  4. ^ M. M. Neill (1883). "Observations of Comet 1883 Brooks-Swift at Princeton, New Jersey, USA" (PDF). Astronomische Nachrichten. 105 (24): 389–390. doi:10.1002/asna.18831052405.
  5. ^ R. Bryant (1884). "The Elements of the Orbit of Comet a, 1883 (Brooks–Swift)" (PDF). Monthly Notices of the Royal Astronomical Society. 44 (3): 88. doi:10.1093/mnras/44.3.88.
  6. ^ N. de Konkoly (1883). "Spectroscopic Observations of Comet a, 1883 (Brooks–Swift)" (PDF). Monthly Notices of the Royal Astronomical Society. 43 (6): 328–329. Bibcode:1883MNRAS..43..328D. doi:10.1093/mnras/43.6.328a.
  7. ^ S. C. Chandler, Jr. (1883). "Observations of Comet 1883 I (Brooks–Swift)". Astronomische Nachrichten. 106 (1): 9–12. Bibcode:1883AN....106....9C. doi:10.1002/asna.18841060105.
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