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1105 Fragaria
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Main-belt asteroid
October 2019
yes
1105 Fragaria
#D6D6D6
001105-asteroid shape model (1105) Fragaria.png
Shape model of Fragaria from its lightcurve
K. Reinmuth
Heidelberg Obs.
1 January 1929
(1105) Fragaria
1929 AB1947 KB1977 EUA916 MAA917 UH
f r ə ˈ ɡ ɛər i əSunset Western Garden Book, 1995:606–607
Fragaria(flowering plant)
main-belt(outer)Eos
23 March 2018 (JD 2458200.5)
0
89.13 yr (32,553 days)
3.3288 AU
2.6915 AU
3.0101 AU
0.1059
5.22 yr (1,908 days)
110.60°
0.1887 ms / day
10.968°
116.90°
225.01°
27.92 3.41 km31.518 0.346 km36.95 km (derived)37.03 3.8 km38.206 0.703 km38.41 0.46 km
5.4312 0.0008 h
0.1017 0.01670.1086 (derived)0.113 0.0030.1186 0.0290.128 0.0080.166 0.058
Tholen STU/LB–V 0.776 029U–B 0.419 0.049
10.0910.1910.34
1105 Fragaria f r ə ˈ ɡ ɛər i ə is an Eos asteroid from the outer regions of the asteroid belt. It was discovered on 1 January 1929, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany, and assigned the provisional designation 1929 AB. The S-type asteroid (ST/L) has a rotation period of 5.4 hours and measures approximately 37 km mi off us in diameter. It was named after the flowering plant Fragaria (strawberry).
Orbit and classification
thumb|left|260px|Orbital diagram of Fragaria
Fragaria belongs to the Eos family (606), the largest asteroid family of the outer asteroid belt consisting of nearly 10,000 members. It orbits the Sun in the outer asteroid belt at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,908 days; semi-major axis of 3.01 AU). Its orbit has an eccentricity of 0.11 and an inclination of 11° with respect to the ecliptic.
The asteroid was first observed as 1916 MA at Simeiz Observatory in June 1916. The body's observation arc begins at Heidelberg in December 1928, three weeks prior to its official discovery observation.
Naming
This minor planet was named after Fragaria, the genus of flowering plants in the rose family, commonly known as strawberries. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 104).
Reinmuth's flower
Karl Reinmuth submitted a list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between 1009 (1009) and 1200 (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).
Physical characteristics
In the Tholen classification, Fragaria has an ambiguous spectral type, closest to an S-type and somewhat similar to the darker and uncommon T-type asteroids (ST), while polarimetric observations characterized it as an U/L-type asteroid. The overall spectral type for members of the Eos family is that of a K-type.23
Rotation period
In December 2017. a rotational lightcurve of Fragaria was obtained from photometric observations by American photometrist Tom Polakis at the Command Module Observatory V02 in Arizona. Lightcurve analysis gave a rotation period of 5.4312 0.0008 hours with a brightness variation of 0.33 0.03 magnitude (U=3–). Since the 1990s, the best period determinations was mady by French and Italian astronomers at ESO's La Silla Observatory using the ESO 1-metre telescope which gave 10.88 hours (or twice the period solution) and an amplitude of 0.12 magnitude (U=1). As of 2018, no secure period has been obtained.
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Fragaria measures between 27.92 and 38.41 kilometers in diameter and its surface has an albedo between 0.1017 and 0.166. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1086 and a diameter of 36.95 kilometers based on an absolute magnitude of 10.19.
References
30em 2018-01-24 last obs.
JPL Small-Body Database Browser: 1105 Fragaria (1929 AB)
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001105
Jet Propulsion Laboratory
28 February 2018
Dictionary of Minor Planet Names
https://archive.org/details/dictionaryminorp00schm
limited
Schmadel Lutz D.
Springer Berlin Heidelberg
(1105) Fragaria
94
2007
978-3-540-00238-3
10.1007/978-3-540-29925-7_1106
Dictionary of Minor Planet Names
https://archive.org/details/dictionaryminorp00schm
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Schmadel
Lutz D.
Springer Berlin Heidelberg
(1054) Forsytia
90
2007
978-3-540-00238-3
10.1007/978-3-540-29925-7_1055
1105 Fragaria (1929 AB)
Minor Planet Center
https://www.minorplanetcenter.net/db_search/show_object?object_id=1105
28 February 2018
6
Joseph R. Masiero
A. K. Mainzer
T. Grav
J. M. Bauer
R. M. Cutri
J. Dailey
P. R. M. Eisenhardt
R. S. McMillan
T. B. Spahr
M. F. Skrutskie
D. Tholen
R. G. Walker
E. L. Wright
E. DeBaun
D. Elsbury
T. IV Gautier
S. Gomillion
A. Wilkins
November 2011
Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters
The Astrophysical Journal
741
2
20
2011ApJ...741...68M
10.1088/0004-637X/741/2/68
1109.4096
Asteroid 1105 Fragaria – Nesvorny HCM Asteroid Families V3.0
Small Bodies Data Ferret
https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1105+Fragaria#Asteroid%201105%20FragariaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0
26 October 2019 October 2026 InternetArchiveBot
D. Nesvorný
M. Broz
V. Carruba
December 2014
Identification and Dynamical Properties of Asteroid Families
Asteroids IV
297–321
2015aste.book..297N
10.2458/azu_uapress_9780816532131-ch016
1502.01628
978-0-8165-3213-1
1105
28 February 2018
6
Joseph R. Masiero
A. K. Mainzer
T. Grav
J. M. Bauer
R. M. Cutri
C. Nugent
M. S. Cabrera
November 2012
Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids
The Astrophysical Journal Letters
759
1
5
2012ApJ...759L...8M
10.1088/2041-8205/759/1/L8
1209.5794
6
A. Mainzer
T. Grav
J. Masiero
E. Hand
J. Bauer
D. Tholen
R. S. McMillan
T. Spahr
R. M. Cutri
E. Wright
J. Watkins
W. Mo
C. Maleszewski
November 2011
NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
The Astrophysical Journal
741
2
25
2011ApJ...741...90M
10.1088/0004-637X/741/2/90
1109.6407
E. F. Tedesco
P. V. Noah
M. Noah
S. D. Price
October 2004
IRAS Minor Planet Survey V6.0
https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
NASA Planetary Data System
12
IRAS-A-FPA-3-RDR-IMPS-V6.0
2004PDSS...12.....T
22 October 2019
6
Fumihiko Usui
Daisuke Kuroda
Thomas G. Müller
Sunao Hasegawa
Masateru Ishiguro
Takafumi Ootsubo
Daisuke Ishihara
Hirokazu Kataza
Satoshi Takita
Shinki Oyabu
Munetaka Ueno
Hideo Matsuhara
Takashi Onaka
October 2011
Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey
Publications of the Astronomical Society of Japan
63
5
1117–1138
2011PASJ...63.1117U
10.1093/pasj/63.5.1117
(online, AcuA catalog p. 153)
M. A. Barucci
M. di Martino
E. Dotto
M. Fulchignoni
A. Rotundi
R. Burchi
June 1994
Rotational properties of small asteroids: Photoelectric observations of 16 asteroids
Icarus
109
2
267–273
0019-1035
1994Icar..109..267B
10.1006/icar.1994.1092
6
I. N. Belskaya
S. Fornasier
G. P. Tozzi
R. Gil-Hutton
A. Cellino
K. Antonyuk
Yu. N. Krugly
A. N. Dovgopol
S. Faggi
March 2017
Refining the asteroid taxonomy by polarimetric observations
Icarus
284
30–42
2017Icar..284...30B
10.1016/j.icarus.2016.11.003 11336/63617
free
Polakis
Tom
April 2018
Lightcurve Analysis for Eleven Main-belt Asteroids
Minor Planet Bulletin
http://www.minorplanet.info/MPB/issues/MPB_45-2.pdf
45
2
199–203
2018MPBu...45..199P
1052-8091
13 March 2020
12 February 2020
https://web.archive.org/web/20200212190402/http://www.minorplanet.info/MPB/issues/MPB_45-2.pdf
External links
Lightcurve Database Query (LCDB), at www.minorplanet.info
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Geneva Observatory, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
1105
1104 Syringa 1105 1106 Cydonia
001105
Category:Discoveries by Karl Wilhelm Reinmuth
Category:Named minor planets
001105
19290101