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Revision as of 08:28, 4 January 2025 editKyloRen2017 (talk | contribs)Extended confirmed users5,127 editsm Z. Daniel discovered three comets, not two← Previous edit Revision as of 08:56, 4 January 2025 edit undoKyloRen2017 (talk | contribs)Extended confirmed users5,127 edits →Discovery and observations: First recorded observations of the cometTag: Disambiguation links addedNext edit →
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'''Comet Daniel''', formally known as '''C/1907 L2''', is a ] that became visible in the naked eye in 1907. It was the first of three comets discovered by American astronomer, ]. '''Comet Daniel''', formally known as '''C/1907 L2''', is a ] that became visible in the naked eye in 1907. It was the first of three comets discovered by American astronomer, ].

== Discovery and observations ==
The comet was discovered by ] using a {{cvt|15|cm|in}} ] on the dawn of 10 June 1907, however its nature as a comet wasn't confirmed until two days later by ].{{r|Kronk_2007}} At the time, the object was located within the constellation ].{{efn|Reported initial position upon discovery was: ] {{=}} {{RA|23|48.6}}, ] {{=}} {{DEC|–1|08}}{{r|Kronk_2007}}}}

] made a series of photographic observations of the comet between 11 July and 8 September 1907, where he described the comet being visible to the naked eye for two months.{{r|Barnard_1910}}


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

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

<ref name="Barnard_1910">{{cite journal
| author1= E. E. Barnard
| title= Photographic Observations of Daniel's Comet
| url= https://www.jstor.org/stable/pdf/983986.pdf
| journal= Proceedings of the American Philosophical Society
| year= 1910
| volume= 49
| issue= 194
| pages= 3–16
| bibcode= 1910PAPhS..49....3B
| jstor= 983986
| jstor-access= free }}
</ref>


<ref name="ICQ1">{{cite web <ref name="ICQ1">{{cite web

Revision as of 08:56, 4 January 2025

Non-periodic comet For the other comets of the same name, see 33P/Daniel and C/1909 L1 (Borrelly–Daniel).
C/1907 L2 (Daniel)
Daniel's Comet photographed by Max Wolf on 4 August 1937
Discovery
Discovered byZaccheus Daniel
Discovery sitePrinceton, New Jersey
Discovery date10 June 1907
Designations
Alternative designations1907d
1907 IV
Orbital characteristics
Epoch27 September 1907 (JD 2417845.5)
Observation arc344 days
Number of
observations		173
Aphelion830.60 AU
Perihelion0.512 AU
Semi-major axis415.55 AU
Eccentricity0.99877
Orbital period~8,470 years (inbound)
~5,220 years (outbound)
Inclination8.958°
Longitude of
ascending node		144.27°
Argument of
periapsis		294.47°
Last perihelion4 September 1907
TJupiter0.889
Earth MOID0.058 AU
Jupiter MOID0.417 AU
Physical characteristics
Comet total
magnitude (M1)		3.7
Comet nuclear
magnitude (M2)		7.2
Apparent magnitude2.6
(1907 apparition)

Comet Daniel, formally known as C/1907 L2, is a non-periodic comet that became visible in the naked eye in 1907. It was the first of three comets discovered by American astronomer, Zaccheus Daniel.

Discovery and observations

The comet was discovered by Zaccheus Daniel using a 15 cm (5.9 in) comet-seeker on the dawn of 10 June 1907, however its nature as a comet wasn't confirmed until two days later by William Robert Brooks. At the time, the object was located within the constellation Pisces.

Edward E. Barnard made a series of photographic observations of the comet between 11 July and 8 September 1907, where he described the comet being visible to the naked eye for two months.

References

Notes

  1. Reported initial position upon discovery was: α = 23 48.6 , δ = –1° 08′

Citations

  1. "Comet Names and Designations". International Comet Quarterly. Retrieved 4 January 2025.
  2. "C/1907 L2 (Daniel) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 24 November 2023.
  3. ^ G. W. Kronk (2007). Cometography: A Catalog of Comets. Vol. 3: 1900–1932. Cambridge University Press. pp. 110–119. ISBN 978-0-521-58506-4.
  4. E. E. Barnard (1910). "Photographic Observations of Daniel's Comet" (PDF). Proceedings of the American Philosophical Society. 49 (194): 3–16. Bibcode:1910PAPhS..49....3B. JSTOR 983986.

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