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Revision as of 22:43, 2 January 2025 editKyloRen2017 (talk | contribs)Extended confirmed users5,214 editsm KyloRen2017 moved page C/1900 O1 (Borrelly-Brooks) to C/1900 O1 (Borrelly–Brooks)← Previous edit Latest revision as of 21:54, 3 January 2025 edit undoEighteenFiftyNine (talk | contribs)Extended confirmed users1,856 edits Copy editTag: Visual edit 
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| name = C/1900 O1 (Borrelly–Brooks) | name = C/1900 O1 (Borrelly–Brooks)
| discovery_ref = | discovery_ref =
| discoverer = ]<br>] | discoverer = ]<br>]
| discovery_site = | discovery_site =
| discovery_date = 23 July 1900 | discovery_date = 23 July 1900
Line 16: Line 16:
| aphelion = | aphelion =
| semimajor = | semimajor =
| period = | period = ~66,000 years (inbound)
| eccentricity = 1.00032 | eccentricity = 1.00032
| inclination = 62.533° | inclination = 62.533°
Line 24: Line 24:
| Earth_moid = 0.0154 AU | Earth_moid = 0.0154 AU
| Jupiter_moid = 3.0621 AU | Jupiter_moid = 3.0621 AU
| physical_ref = | physical_ref = {{r|Kronk_2007}}
| M1 = | M1 = 5.0
| M2 = | M2 = 8.0
| magnitude = | magnitude = 8.64<br><small>(1900 apparition)</small>
| last_p = 3 August 1900 | last_p = 3 August 1900
| next_p = | next_p =
}} }}


'''Comet Borrelly–Brooks''', formal designation '''C/1900 O1''', is a ] '''Comet Borrelly–Brooks''', formal designation '''C/1900 O1''', is a ] that was seen throughout the latter half of 1900.

== Discovery and observations ==
French astronomer ] was the first person to discover the comet on the early morning of 24 July 1900, while ] independently spotted the same comet about 15 minutes later.{{r|Kronk_2007}} They reported the comet as a 9th-magnitude object with a short ] located within the constellation ].{{efn|Reported initial position upon discovery was: ] {{=}} {{RA|2|43.3}}, ] {{=}} {{DEC|11|51}}{{r|Kronk_2007}}}} A day later, H. K. Palmer started to take a series of photographs of the comet itself for the remainder of the month.{{r|Palmer_1901}}

] was the last astronomer to observe Comet Borrelly–Brooks as it faded to a 15th-magnitude object within the constellation ] on 23 December 1900.{{r|Aitken_1901}}

== Orbit ==
] and others calculated the first parabolic trajectory of the comet, concluding that it reached perihelion on 3 August 1900.{{r|Crawford_1900}} In 1903, ] later revised it to a hyperbolic trajectory.{{r|De_Simas_1903}} ] found that the comet had accelerated during its inbound flight to the ] in 1900,{{r|Poor_1903}} with ] and ] later calculating this original trajectory had an orbital period of 66,000 years before it was ejected from the Solar System.{{r|Kronk_2007}}

== Possible meteor shower ==
Due to the comet's very small ] with Earth, around {{convert|0.015|AU|e6km|abbr=unit}} away, it is theorized that this comet is a potential parent body of a ] that should appear 21 August of each year from a radiant in the direction of the constellation ].{{r|Davidson_1920}} However, no associated meteor shower has yet been found.


== References == == References ==
=== Notes ===
{{Notelist}}

=== Citations ===
{{Reflist|refs= {{Reflist|refs=

<ref name="Aitken_1901">{{cite journal
| author1= R. G. Aitken
| title= Observations of Comet 1900b
| url= https://ui.adsabs.harvard.edu/link_gateway/1901AJ.....21...80A/ADS_PDF
| journal= Astronomical Journal
| year= 1901
| volume= 21
| issue= 490
| page= 80
| bibcode= 1901AJ.....21...80A
| doi= 10.1086/103261
| doi-access= free }}
</ref>

<ref name="Crawford_1900">{{cite journal
| author1= R. T. Crawford
| author2= C. D. Perrine
| title= Comet b, 1900 (Borrelly–Brooks)
| url= https://www.jstor.org/stable/pdf/40668090.pdf
| journal= Publications of the Astronomical Society of the Pacific
| year= 1900
| volume= 12
| issue= 75
| page= 204
| jstor= 40668090
| jstor-access= free }}
</ref>

<ref name="Davidson_1920">{{cite journal
| author1= M. Davidson
| title= Cometary Radiant Points, 1875–1920
| url= https://academic.oup.com/mnras/article-pdf/80/8/739/3654970/mnras80-0739.pdf
| journal= Monthly Notices of the Royal Astronomical Society
| year= 1920
| volume= 80
| issue= 8
| pages= 739–741
| bibcode= 1920MNRAS..80..739D
| doi= 10.1093/mnras/80.8.739
| doi-access= free }}
</ref>

<ref name="De_Simas_1903">{{cite book
| author1= M. De Simas
| title= Definitive Orbit Elements of Comet 1900 II
| url= https://books.google.com/books?id=DThh0AEACAAJ
| publisher= Astronomische Nachrichten
| year= 1903
| isbn= 978-1-247-73236-7 }}
</ref>


<ref name="ICQ1">{{cite web <ref name="ICQ1">{{cite web
Line 50: Line 116:
| publisher= ] | publisher= ]
| access-date= 24 November 2023 }} | access-date= 24 November 2023 }}
</ref>

<ref name="Kronk_2007">{{cite book
| author1= G. W. Kronk
| title= Cometography: A Catalog of Comets
| volume= 3: 1900–1932
| year= 2007
| publisher= ]
| pages= 3–8
| isbn= 978-0-521-58506-4 }}
</ref> </ref>


Line 65: Line 141:
| jstor-access= free | jstor-access= free
| doi= 10.1086/121418 | doi= 10.1086/121418
| doi-access= free }}
</ref>

<ref name="Poor_1903">{{cite journal
| author1= J. M. Poor
| title= Orbit of Comet 1900 II
| url= https://ui.adsabs.harvard.edu/link_gateway/1903AJ.....23..183P/ADS_PDF
| journal= Astronomical Journal
| year= 1903
| volume= 23
| issue= 548
| pages= 183–188
| bibcode= 1903AJ.....23..183P
| doi= 10.1086/103509
| doi-access= free }} | doi-access= free }}
</ref> </ref>
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] ]
] ]

{{Comet-stub}}

Latest revision as of 21:54, 3 January 2025

Hyperbolic comet
C/1900 O1 (Borrelly–Brooks)
Comet Borrelly–Brooks photographed by H. K. Palmer on 31 July 1900
Discovery
Discovered byAlphonse Borrelly
William R. Brooks
Discovery date23 July 1900
Designations
Alternative designations1900b
1900 II
Orbital characteristics
Epoch15 August 1900 (JD 2415246.5)
Observation arc94 days
Number of
observations		121
Perihelion1.015 AU
Eccentricity1.00032
Orbital period~66,000 years (inbound)
Inclination62.533°
Longitude of
ascending node		329.41°
Argument of
periapsis		12.423°
Last perihelion3 August 1900
Earth MOID0.0154 AU
Jupiter MOID3.0621 AU
Physical characteristics
Comet total
magnitude (M1)		5.0
Comet nuclear
magnitude (M2)		8.0
Apparent magnitude8.64
(1900 apparition)

Comet Borrelly–Brooks, formal designation C/1900 O1, is a hyperbolic comet that was seen throughout the latter half of 1900.

Discovery and observations

French astronomer Alphonse Borrelly was the first person to discover the comet on the early morning of 24 July 1900, while William Robert Brooks independently spotted the same comet about 15 minutes later. They reported the comet as a 9th-magnitude object with a short tail located within the constellation Aries. A day later, H. K. Palmer started to take a series of photographs of the comet itself for the remainder of the month.

Robert G. Aitken was the last astronomer to observe Comet Borrelly–Brooks as it faded to a 15th-magnitude object within the constellation Ursa Minor on 23 December 1900.

Orbit

Charles D. Perrine and others calculated the first parabolic trajectory of the comet, concluding that it reached perihelion on 3 August 1900. In 1903, Manuel de Simas later revised it to a hyperbolic trajectory. J. M. Poor found that the comet had accelerated during its inbound flight to the Sun in 1900, with Brian G. Marsden and Ichiro Hasegawa later calculating this original trajectory had an orbital period of 66,000 years before it was ejected from the Solar System.

Possible meteor shower

Due to the comet's very small minimum orbit intersection distance with Earth, around 0.015 AU (2.2 million km) away, it is theorized that this comet is a potential parent body of a meteor shower that should appear 21 August of each year from a radiant in the direction of the constellation Hydrus. However, no associated meteor shower has yet been found.

References

Notes

  1. Reported initial position upon discovery was: α = 2 43.3 , δ = 11° 51′

Citations

  1. ^ H. K. Palmer (1901). "Photographic Observations of Comet II, 1900 (Borrelly–Brooks)" (PDF). Publications of the Astronomical Society of the Pacific. 13 (78): 48–51. Bibcode:1901PASP...13...48P. doi:10.1086/121418. JSTOR 40671436.
  2. "Comet Names and Designations". International Comet Quarterly. Retrieved 3 January 2025.
  3. "C/1900 O1 (Borrelly–Brooks) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 24 November 2023.
  4. ^ G. W. Kronk (2007). Cometography: A Catalog of Comets. Vol. 3: 1900–1932. Cambridge University Press. pp. 3–8. ISBN 978-0-521-58506-4.
  5. R. G. Aitken (1901). "Observations of Comet 1900b". Astronomical Journal. 21 (490): 80. Bibcode:1901AJ.....21...80A. doi:10.1086/103261.
  6. R. T. Crawford; C. D. Perrine (1900). "Comet b, 1900 (Borrelly–Brooks)" (PDF). Publications of the Astronomical Society of the Pacific. 12 (75): 204. JSTOR 40668090.
  7. M. De Simas (1903). Definitive Orbit Elements of Comet 1900 II. Astronomische Nachrichten. ISBN 978-1-247-73236-7.
  8. J. M. Poor (1903). "Orbit of Comet 1900 II". Astronomical Journal. 23 (548): 183–188. Bibcode:1903AJ.....23..183P. doi:10.1086/103509.
  9. M. Davidson (1920). "Cometary Radiant Points, 1875–1920" (PDF). Monthly Notices of the Royal Astronomical Society. 80 (8): 739–741. Bibcode:1920MNRAS..80..739D. doi:10.1093/mnras/80.8.739.

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