1631 Kopff: Difference between revisions

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{{Infobox planet
{{Infobox planet
| minorplanet = yes
| width = 25em
| name = 1631 Kopff
| bgcolour = #FFFFC0
| background = #FFFFC0
| apsis =
| image =
| name = Kopff
| symbol =
| caption =
| discovery_ref = &thinsp;<ref name="jpldata" />
| image =
| discovered = 11 October 1936
| caption =
| discoverer = [[Yrjö Väisälä|Y. Väisälä]]
| discovery = yes
| discovery_site = [[Iso-Heikkilä Observatory|Turku Observatory]]
| discovery_ref =
| mp_name = 1631 Kopff
| discoverer = [[Y. Vaisala]]
| alt_names = 1936 UC{{·}}1926 TH<br />1935 FG{{·}}1946 SA<br />{{mp|1952 HV|2}}
| discovery_site = [[Turku]]
| named_after = [[August Kopff]]<br />{{small|(astronomer)}}<ref name="springer" />
| discovered = October 11, 1936
| mp_category = [[main-belt]]{{·}}[[Flora family|Flora]]&thinsp;<ref name="lcdb" />
| designations = yes
| orbit_ref = &thinsp;<ref name="jpldata" />
| mp_name = 1631
| epoch = 27 June 2015 ([[Julian day|JD]] 2457200.5)
| alt_names = 1936 UC
| uncertainty = 0
| named_after = [[August Kopff]]
| observation_arc = {{nowrap|88.75 yr (32,416 days)}}
| mp_category =
| aphelion = 2.7126 [[Astronomical unit|AU]]
| orbit_ref =
| perihelion = 1.7581 AU
| epoch = May 14, 2008
| aphelion = 2.7119424
| semimajor = 2.2353 AU
| eccentricity = 0.2135
| perihelion = 1.7586694
| period = 3.34 [[Julian year (astronomy)|yr]] (1,221 days)
| semimajor =
| mean_anomaly = 231.20[[degree (angle)|°]]
| eccentricity = 0.2132310
| inclination = 7.4938°
| period = 1220.6857820
| asc_node = 16.829°
| avg_speed =
| arg_peri = 315.11°
| inclination = 7.48830
| dimensions = 9.66 km<ref name="SIMPS" /><br />{{val|9.58|0.21}} km<ref name="AKARI" /><br />{{val|8.64|0.39}} km<ref name="Masiero-2012" /><br />9.71 km {{small|(derived)}}<ref name="lcdb" />
| asc_node = 16.95528
| rotation = 6.683 [[hour|h]]<ref name="Sada-2004b" />
| mean_anomaly = 184.82256
| albedo = 0.2497<ref name="SIMPS" /><br />{{val|0.259|0.012}}<ref name="AKARI" /><br />{{val|0.342|0.061}}<ref name="Masiero-2012" /><br />0.2710 {{small|(derived)}}<ref name="lcdb" />
| arg_peri = 314.74991
| spectral_type = [[S-type asteroid|S]]&thinsp;<ref name="lcdb" />
| satellites =
| abs_magnitude = 12.1
| physical_characteristics = yes
| dimensions =
| mass =
| density =
| surface_grav =
| escape_velocity =
| sidereal_day =
| axial_tilt =
| pole_ecliptic_lat =
| pole_ecliptic_lon =
| albedo = 0.2497
| temperatures=
| temp_name1 =
| mean_temp_1 =
| max_temp_1 =
| temp_name2 =
| max_temp_2 =
| spectral_type =
| abs_magnitude = 12.20
}}
}}
'''1631 Kopff''' (1936 UC) is a [[Asteroid belt|main-belt]] [[asteroid]] discovered on October 11, 1936 by [[Y. Vaisala]] at [[Turku]]. The asteroid was named in memory of [[August Kopff]].<ref>{{cite book|last=Schmadel|first=Lutz D.|title=Dictionary of minor planet names|volume=1 |edition=5th|date=2003|publisher=Springer-Verlag|location=Berlin Heidelberg New York|isbn=3-540-00238-3|page=129}}</ref>


'''1631 Kopff''', provisional designation 1936 UC, is a stony [[asteroid]] from the inner regions of the [[asteroid belt]], about 9 kilometers in diameter. It was discovered by Finnish astronomer [[Yrjö Väisälä]] at [[Iso-Heikkilä Observatory|Turku Observatory]] on 11 October 1936 ''(also see discovery circumstances below)''.<ref name="MPC-Kopff" />{{efn|name=discovery-note-verbatim}}
==References==
{{reflist}}


The asteroid is a member of the [[Flora family]], a large group of stony [[S-type asteroid|S-type]] asteroids in the inner main-belt. It orbits the Sun at a distance of 1.8–2.7&nbsp;[[Astronomical unit|AU]] once every 3 years and 4 months (1,221 days). Its orbit shows an [[orbital eccentricity|eccentricity]] of 0.21 and is [[orbital inclination|tilted]] by 7 degrees to the plane of the [[ecliptic]]. It has a [[rotation period]] of 6.7 hours<ref name="Sada-2004b" /> and an [[geometric albedo|albedo]] of 0.250, according to the surveys carried out by [[IRAS]], [[Akari (satellite)|Akari]], and [[Wide-field Infrared Survey Explorer|WISE]]/[[NEOWISE]].<ref name="SIMPS" /><ref name="AKARI" /><ref name="Masiero-2012" />
== External links ==
*[http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1631+Kopff JPL Small-Body Database Browser on 1631 Kopff]


The minor planet was named after German astronomer [[August Kopff]] (1882–1960). He was first an assistant to [[Max Wolf]] prolific discoverer of minor planets himself. In 1924 he became Director of the [[Astronomisches Rechen-Institut]] in Berlin, and after the western section moved to Heidelberg he also became director of Heidelberg-Königstuhl Observatory. He was responsible for constructing the third [[Catalogue of Fundamental Stars]] (FK3) and initiated work on the fourth ([[FK4]]). The lunar carter [[Kopff (crater)|Kopff]] is also named in his honour.<ref name="springer" />

== Notes ==
{{notelist|refs=

{{efn|name=discovery-note-verbatim|Quoted from {{URL|1=http://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_1632|2=Dictionary of Minor Planet Names – (1631) Kopff}}: Karl Reinmuth discovered the planet as 1926 TH on 1926 October 5. The planet could only have been observed on two nights which was not sufficient to derive a reliable orbit. The discovery is therefore credited to Y. Väisälä. Elliptical elements were derived by H. Walter (MPC 1897) from five positions of 1936 UC. The identity between both apparitions was found by A. Patry (MPC 1451).}}

}} <!-- end of notelist -->

== References ==
{{reflist
|refs=

<ref name="lcdb">{{cite web
|title=LCDB Data for (1631) Kopff
|publisher=Asteroid Lightcurve Database (LCDB)
|url=http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1631%7CKopff
|accessdate=November 2015}}</ref>

<ref name="jpldata">{{cite web
|type=2015-07-06 last obs.
|title=JPL Small-Body Database Browser: 1631 Kopff (1936 UC)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001631
|publisher=Jet Propulsion Laboratory
|accessdate=November 2015}}</ref>

<ref name="springer">{{cite book
|url=http://link.springer.com/referenceworkentry/10.1007/978-3-540-29925-7_1632
|title=Dictionary of Minor Planet Names – (1631) Kopff
|last=Schmadel |first=Lutz D.
|publisher=Springer Berlin Heidelberg
|page=129
|date=2003
|isbn=978-3-540-29925-7
|accessdate=November 2015}}</ref>

<ref name="MPC-Kopff">{{cite web
|title=1631 Kopff (1936 UC)
|work=Minor Planet Center
|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=1631
|accessdate=November 2015}}</ref>

<ref name="SIMPS">{{cite journal
|authors = Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D.
|date = October 2004
|title = IRAS Minor Planet Survey V6.0
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004PDSS...12.....T
|journal = NASA Planetary Data System
|bibcode = 2004PDSS...12.....T
|access-date= November 2015}}</ref>

<ref name="AKARI">{{cite journal
|authors = Usui, Fumihiko; Kuroda, Daisuke; M&#252;ller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; Ishihara, Daisuke; Kataza, Hirokazu; Takita, Satoshi; Oyabu, Shinki; Ueno, Munetaka; Matsuhara, Hideo; Onaka, Takashi
|date = October 2011
|title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011PASJ...63.1117U
|journal = Publications of the Astronomical Society of Japan
|volume = 63
|issue = 5
|pages = 1117–1138
|bibcode = 2011PASJ...63.1117U
|doi = 10.1093/pasj/63.5.1117
|access-date= November 2015}}</ref>

<ref name="Masiero-2012">{{cite journal
|authors = Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S.
|date = November 2012
|title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M
|journal = The Astrophysical Journal Letters
|volume = 759
|issue = 1
|page = 5
|bibcode = 2012ApJ...759L...8M
|doi = 10.1088/2041-8205/759/1/L8
|access-date= November 2015}}</ref>

<ref name="Sada-2004b">{{cite journal
|authors = Sada, Pedro V.; Canizales, Eder D.; Armada, Edgar M.
|date = September 2004
|title = CCD photometry of asteroids 970 Primula and 1631 Kopff using a remote commercial telescope
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004MPBu...31...49S
|journal = Bulletin of the Minor Planets
|publisher = Section of the Association of Lunar and Planetary Observers
|volume = 31
|issue = 3
|pages = 49–50
|issn = 1052-8091
|bibcode = 2004MPBu...31...49S
|access-date= November 2015}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info])
* [https://books.google.se/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
* [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
* [http://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{JPL small body|title=1631 Kopff (1936 UC)|id=2001631}}
{{Minor planets navigator|1630 Milet|1632 Sieböhme}}
{{Minor planets navigator|1630 Milet|1632 Sieböhme}}
{{Small Solar System bodies}}
{{Small Solar System bodies}}

{{DEFAULTSORT:Kopff}}
{{DEFAULTSORT:Kopff}}
[[Category:Main-belt asteroids]]
[[Category:Main-belt asteroids|001631]]
[[Category:Numbered asteroids]]
[[Category:Asteroids named for people]]
[[Category:Asteroids named for people]]
[[Category:Astronomical objects discovered in 1936]]
[[Category:Astronomical objects discovered in 1936|19361011]]
[[Category:Flora asteroids|001631]]




Revision as of 05:56, 13 November 2015

1631 Kopff
Discovery [1]
Discovered byY. Väisälä
Discovery siteTurku Observatory
Discovery date11 October 1936
Designations
1631 Kopff
Named after
August Kopff
(astronomer)[2]
1936 UC · 1926 TH
1935 FG · 1946 SA
1952 HV2
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc88.75 yr (32,416 days)
Aphelion2.7126 AU
Perihelion1.7581 AU
2.2353 AU
Eccentricity0.2135
3.34 yr (1,221 days)
231.20°
Inclination7.4938°
16.829°
315.11°
Physical characteristics
Dimensions9.66 km[4]
9.58±0.21 km[5]
8.64±0.39 km[6]
9.71 km (derived)[3]
6.683 h[7]
0.2497[4]
0.259±0.012[5]
0.342±0.061[6]
0.2710 (derived)[3]
S [3]
12.1

1631 Kopff, provisional designation 1936 UC, is a stony asteroid from the inner regions of the asteroid belt, about 9 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 11 October 1936 (also see discovery circumstances below).[8][a]

The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,221 days). Its orbit shows an eccentricity of 0.21 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 6.7 hours[7] and an albedo of 0.250, according to the surveys carried out by IRAS, Akari, and WISE/NEOWISE.[4][5][6]

The minor planet was named after German astronomer August Kopff (1882–1960). He was first an assistant to Max Wolf prolific discoverer of minor planets himself. In 1924 he became Director of the Astronomisches Rechen-Institut in Berlin, and after the western section moved to Heidelberg he also became director of Heidelberg-Königstuhl Observatory. He was responsible for constructing the third Catalogue of Fundamental Stars (FK3) and initiated work on the fourth (FK4). The lunar carter Kopff is also named in his honour.[2]

Notes

  1. ^ Quoted from Dictionary of Minor Planet Names – (1631) Kopff: Karl Reinmuth discovered the planet as 1926 TH on 1926 October 5. The planet could only have been observed on two nights which was not sufficient to derive a reliable orbit. The discovery is therefore credited to Y. Väisälä. Elliptical elements were derived by H. Walter (MPC 1897) from five positions of 1936 UC. The identity between both apparitions was found by A. Patry (MPC 1451).

References

  1. ^ a b "JPL Small-Body Database Browser: 1631 Kopff (1936 UC)" (2015-07-06 last obs.). Jet Propulsion Laboratory. Retrieved November 2015. {{cite web}}: Check date values in: |accessdate= (help)
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1631) Kopff. Springer Berlin Heidelberg. p. 129. ISBN 978-3-540-29925-7. Retrieved November 2015. {{cite book}}: Check date values in: |accessdate= (help)
  3. ^ a b c d "LCDB Data for (1631) Kopff". Asteroid Lightcurve Database (LCDB). Retrieved November 2015. {{cite web}}: Check date values in: |accessdate= (help)
  4. ^ a b c "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. October 2004. Bibcode:2004PDSS...12.....T. Retrieved November 2015. {{cite journal}}: Check date values in: |access-date= (help); Cite uses deprecated parameter |authors= (help)
  5. ^ a b c "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. October 2011. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved November 2015. {{cite journal}}: Check date values in: |access-date= (help); Cite uses deprecated parameter |authors= (help)
  6. ^ a b c "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. November 2012. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved November 2015. {{cite journal}}: Check date values in: |access-date= (help); Cite uses deprecated parameter |authors= (help)
  7. ^ a b "CCD photometry of asteroids 970 Primula and 1631 Kopff using a remote commercial telescope". Bulletin of the Minor Planets. 31 (3). Section of the Association of Lunar and Planetary Observers: 49–50. September 2004. Bibcode:2004MPBu...31...49S. ISSN 1052-8091. Retrieved November 2015. {{cite journal}}: Check date values in: |access-date= (help); Cite uses deprecated parameter |authors= (help)
  8. ^ "1631 Kopff (1936 UC)". Minor Planet Center. Retrieved November 2015. {{cite web}}: Check date values in: |accessdate= (help)

External links


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