1047 Geisha
{{Short description|Florian asteroid}}
{{Use dmy dates|date=July 2020}}
{{Infobox planet
| minorplanet = yes
| name = 1047 Geisha
| background = #D6D6D6
| image =
| image_size =
| caption =
| discoverer = K. Reinmuth
| discovery_site = Heidelberg Obs.
| discovered = 17 November 1924
| mpc_name = (1047) Geisha
| alt_names = 1924 TE{{·}}1932 BP
1941 YG{{·}}1947 NC
1950 JF{{·}}{{mp|1974 HU|2}}
A916 HB
| pronounced =
| named_after = The Geisha
{{small|(British musical)}}
| mp_category = main-belt{{·}}{{small|(inner)}}
Flora
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 92.63 yr (33,833 d)
| aphelion = 2.6723 AU
| perihelion = 1.8094 AU
| semimajor = 2.2409 AU
| eccentricity = 0.1925
| period = 3.35 yr (1,225 days)
| mean_anomaly = 256.96°
| mean_motion = {{Deg2DMS|0.2938|sup=ms}} / day
| inclination = 5.6667°
| asc_node = 78.223°
| arg_peri = 300.39°
| dimensions = {{val|9.96|2.15}} km
{{val|10.555|0.095}} km
{{val|10.729|0.112}} km
11.52 km {{small|(calculated)}}
| rotation = {{val|25.62|0.02}} h
| albedo = 0.24 {{small|(assumed)}}
{{val|0.277|0.029}}
{{val|0.2897|0.0802}}
{{val|0.30|0.13}}
| spectral_type = Tholen {{=}} S{{·}}S
B–V {{=}} 0.913
U–B {{=}} 0.541
| abs_magnitude = 11.86{{·}}12.20
}}
1047 Geisha, provisional designation {{mp|1924 TE}}, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 17 November 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the British musical The Geisha.
Orbit and classification
Geisha is a member of the Flora family ({{small|402}}), a giant asteroid family and the largest family of stony asteroids in the main-belt.{{rp|23}} It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,225 days; semi-major axis 2.24 AU). Its orbit has an eccentricity of 0.19 and an inclination of 6° with respect to the ecliptic.
The asteroid was first observed as {{mp|A916 HB}} at Heidelberg in April 1916. The body's observation arc begins with its official discovery observation in November 1924.
Physical characteristics
In the Tholen classification, Geisha is stony S-type asteroid, which is also the overall spectral type for members of the Flora family.{{rp|23}}
= Rotation period =
In February 2006, a rotational lightcurve of Geisha was obtained from photometric observations by Italian amateur astronomer Laurent Bernasconi. Lightcurve analysis gave a somewhat longer-than-average rotation period of 25.62 hours with a brightness amplitude of 0.33 magnitude ({{small|U=3-}}).
= Diameter and albedo =
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Geisha measures between 9.96 and 10.729 kilometers in diameter and its surface has an albedo between 0.277 and 0.30.
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, namesake and parent body of the Flora family – and calculates a diameter of 11.52 kilometers based on an absolute magnitude of 11.86.
Naming
This minor planet was named after the British musical The Geisha, a story of a tea house (1896).
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|H 100}}).
References
{{reflist|30em|refs=
|type = 2017-07-05 last obs.
|title = JPL Small-Body Database Browser: 1047 Geisha (1924 TE)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001047
|archive-url = https://web.archive.org/web/20200918004211/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001047
|url-status = dead
|archive-date = 18 September 2020
|publisher = Jet Propulsion Laboratory
|accessdate = 11 January 2018}}
|title = Dictionary of Minor Planet Names – (1047) Geisha
|last = Schmadel | first = Lutz D.
|publisher = Springer Berlin Heidelberg
|page = 89
|date = 2007
|url = https://books.google.com/books?id=aeAg1X7afOoC&dq=1047+Geisha&pg=PA89 |isbn = 978-3-540-00238-3}}
|title = 1047 Geisha (1924 TE)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1047
|accessdate = 11 January 2018}}
|title = Asteroids and comets rotation curves – (1047) Geisha
|last = Behrend |first = Raoul
|publisher = Geneva Observatory
|url = http://obswww.unige.ch/~behrend/page3cou.html#001047
|accessdate = 11 January 2018}}
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = T. |last2 = Grav
|first3 = A. K. |last3 = Mainzer
|first4 = C. R. |last4 = Nugent
|first5 = J. M. |last5 = Bauer
|first6 = R. |last6 = Stevenson
|first7 = S. |last7 = Sonnett
|date = August 2014
|title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos
|journal = The Astrophysical Journal
|volume = 791
|issue = 2
|page = 11
|bibcode = 2014ApJ...791..121M
|doi = 10.1088/0004-637X/791/2/121
|arxiv = 1406.6645
|s2cid = 119293330 }}
|title = Asteroid 1047 Geisha – Nesvorny HCM Asteroid Families V3.0
|work = Small Bodies Data Ferret
|url = https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1047+Geisha
|accessdate = 24 October 2019}}
|first1 = D. |last1 = Nesvorný
|first2 = M. |last2 = Broz
|first3 = V. |last3 = Carruba
|date = December 2014
|chapter = Identification and Dynamical Properties of Asteroid Families
|title = Asteroids IV
|pages = 297–321
|bibcode = 2015aste.book..297N
|doi = 10.2458/azu_uapress_9780816532131-ch016
|arxiv = 1502.01628
|isbn = 9780816532131
|s2cid = 119280014
}}
|title = LCDB Data for (1047) Geisha
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1047%7CGeisha
|accessdate = 11 January 2018}}
|display-authors = 6
|first1 = A. |last1 = Mainzer
|first2 = T. |last2 = Grav
|first3 = J. |last3 = Masiero
|first4 = E. |last4 = Hand
|first5 = J. |last5 = Bauer
|first6 = D. |last6 = Tholen
|first7 = R. S. |last7 = McMillan
|first8 = T. |last8 = Spahr
|first9 = R. M. |last9 = Cutri
|first10 = E. |last10 = Wright
|first11 = J. |last11 = Watkins
|first12 = W. |last12 = Mo
|first13 = C. |last13 = Maleszewski
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407
|s2cid = 118700974 }}
|display-authors = 6
|first1 = C. R. |last1 = Nugent
|first2 = A. |last2 = Mainzer
|first3 = J. |last3 = Bauer
|first4 = R. M. |last4 = Cutri
|first5 = E. A. |last5 = Kramer
|first6 = T. |last6 = Grav
|first7 = J. |last7 = Masiero
|first8 = S. |last8 = Sonnett
|first9 = E. L. |last9 = Wright
|date = September 2016
|title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos
|journal = The Astronomical Journal
|volume = 152
|issue = 3
|page = 12
|bibcode = 2016AJ....152...63N
|doi = 10.3847/0004-6256/152/3/63
|arxiv = 1606.08923
|s2cid = 119289027 |doi-access = free }}
}}
External links
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [https://books.google.com/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
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|1047}}
- {{JPL small body}}
{{Minor planets navigator |1046 Edwin |number=1047 |1048 Feodosia}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Geisha}}