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{{short description|Parabolic comet}} {{short description|Parabolic comet}}
{{Distinguish|C/1848 U1 (Petersen)}} {{For|other comets discovered by Adolph C. Petersen|C/1848 U1 (Petersen)|C/1850 J1 (Petersen)}}
{{Infobox comet {{Infobox comet
| name = C/1848 P1 (Petersen) | name = C/1848 P1 (Petersen)
| discoverer = A. C. Petersen | discoverer = ]
| discovery_site = ], Germany | discovery_site = ], Germany
| discovery_date = 8 August 1848 | discovery_date = 8 August 1848
| designations = 1848 I{{r|ICQ1}} | designations = 1848 I{{r|ICQ1}}
| orbit_ref = {{r|jpl}} | orbit_ref = {{r|jpl}}
| epoch = | epoch = 8 September 1848 (] 2396279.0453)
| observation_arc = 19 days | observation_arc = 19 days
| obs = 30 | obs = 30
Line 29: Line 29:
}} }}


'''Comet Petersen''', also known as '''C/1848 P1''' by modern nomenclature, is a ] that was seen during the month of August 1848. It is one of many comets discovered by German astronomer, A. C. Petersen.{{r|Kronk_2003}} '''Comet Petersen''', also known as '''C/1848 P1''' by modern nomenclature, is a ] that was seen during the month of August 1848. It is first of three comets discovered by German astronomer, ].{{r|Kronk_2003}}


== Observational history == == Observational history ==
A. C. Petersen discovered his first of two comets of the year as a "small, bright, well-defined object" in the constellation ] on 7 August 1848.{{efn|Reported initial position upon discovery was: ] {{=}} {{RA|6|15}}, ] {{=}} {{DEC|41|19}}{{r|Kronk_2003}}}} Further observations in the following days proved to be increasingly difficult as it dropped steadily deeper into the morning twilight.{{r|Kronk_2003}} ] discovered his first of two comets of the year as a "small, bright, well-defined object" in the constellation ] on 7 August 1848.{{efn|Reported initial position upon discovery was: ] {{=}} {{RA|6|15}}, ] {{=}} {{DEC|41|19}}{{r|Kronk_2003}}}} Further observations in the following days proved to be increasingly difficult as it dropped steadily deeper into the morning twilight.{{r|Kronk_2003}}


It was last observed on 27 August 1848, though it was predicted that it had reached perihelion by the next month.{{r|Kronk_2003}} Recalculations of its orbit together with ] (another comet also discovered by Petersen) in 2014 show both comets have parabolic and hyperbolic trajectories respectively, suggesting their possible origin in the ].{{r|Branham_2014}} It was last observed on 27 August 1848, though it was predicted that it had reached perihelion by the next month.{{r|Kronk_2003}} Recalculations of its orbit together with ] (another comet also discovered by Petersen) in 2014 show both comets have parabolic and hyperbolic trajectories respectively, suggesting their possible origin in the ].{{r|Branham_2014}}

Revision as of 01:00, 16 December 2024

Parabolic comet For other comets discovered by Adolph C. Petersen, see C/1848 U1 (Petersen) and C/1850 J1 (Petersen).
C/1848 P1 (Petersen)
Discovery
Discovered byAdolph C. Petersen
Discovery siteAltona, Germany
Discovery date8 August 1848
Designations
Alternative designations1848 I
Orbital characteristics
Epoch8 September 1848 (JD 2396279.0453)
Observation arc19 days
Number of
observations		30
Perihelion0.319 AU
Eccentricity~1.000
Inclination95.594°
Longitude of
ascending node		213.650°
Argument of
periapsis		260.948°
Last perihelion8 September 1848
Comet total
magnitude (M1)		8.1

Comet Petersen, also known as C/1848 P1 by modern nomenclature, is a parabolic comet that was seen during the month of August 1848. It is first of three comets discovered by German astronomer, Adolph C. Petersen.

Observational history

Adolph C. Petersen discovered his first of two comets of the year as a "small, bright, well-defined object" in the constellation Auriga on 7 August 1848. Further observations in the following days proved to be increasingly difficult as it dropped steadily deeper into the morning twilight.

It was last observed on 27 August 1848, though it was predicted that it had reached perihelion by the next month. Recalculations of its orbit together with C/1848 U1 (another comet also discovered by Petersen) in 2014 show both comets have parabolic and hyperbolic trajectories respectively, suggesting their possible origin in the Oort cloud.

References

Notes

  1. Reported initial position upon discovery was: α = 6 15 , δ = 41° 19′

Citations

  1. "Comet Names and Designations". International Comet Quarterly. Retrieved 16 December 2024.
  2. "C/1848 P1 (Petersen) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 16 December 2024.
  3. ^ G. W. Kronk (2003). Cometography: A Catalog of Comets. Vol. 2: 1800–1899. Cambridge University Press. pp. 184–185. ISBN 978-0-521-58505-7.
  4. R. L. Branham, Jr. (2014). "Orbits of comets C/1848 P1 (Petersen) and C/1848 U1 (Petersen)". Planetary and Space Science. 103: 286–290. Bibcode:2014P&SS..103..286B. doi:10.1016/j.pss.2014.08.014.

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