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{{Short description|Main-belt asteroid}}
{{Minor Planet |
{{Use dmy dates|date=June 2017}}
name=17 Thetis
{{Infobox planet
| discoverer=[[Karl Theodor Robert Luther|R. Luther]]
| minorplanet = yes
| discovery_date=[[April 17]], [[1852]]
| name = 17 Thetis
| designations=A913 CA; A916 YF; 1954 SO<sub>1</sub>
| background = #D6D6D6
| category=[[Main belt]]
| symbol = [[File:Thetis symbol (bold).svg|24px]] (historical)
| epoch=[[October 22]], [[2004]] ([[Julian day|JD]] 2453300.5)
| image = 17Thetis-LB1.jpg
| semimajor=369.530 [[Giga|G]][[metre|m]] (2.470 [[Astronomical unit|AU]])
| image_scale =
| perihelion=319.991 Gm (2.139 AU)
| caption = Star field showing asteroid Thetis in the center
| aphelion=419.069 Gm (2.801 AU)
| discovery_ref = <ref name="jpldata" />
| eccentricity=0.134
| discovered = 17 April 1852
| period=1418.027 [[day|d]] (3.88 [[Julian year (astronomy)|a]])
| discoverer = [[Robert Luther|R. Luther]]
| inclination=5.587[[degree (angle)|°]]
| discovery_site = [[Düsseldorf-Bilk Observatory|Düsseldorf-Bilk Obs.]]
| asc_node=125.622°
| mpc_name = (17) Thetis
| arg_peri=135.906°
| alt_names = {{mp|1954 SO|1}}{{·}}{{mp|A913 CA}}<br />{{mp|A916 YF}}
| mean_anomaly=38.435°
| pronounced = {{IPAc-en|ˈ|θ|iː|t|ᵻ|s}}<ref>Noah Webster (1884) ''A Practical Dictionary of the English Language''</ref>
| speed=18.87 km/[[second|s]]
| adjectives = Thetidian {{IPAc-en|θ|ɛ|ˈ|t|ɪ|d|i|ə|n}}<ref>Herbert (1828) ''Nimrod: a discourse on certain passages of history and fable'', vol. 2</ref>
| dimensions=90 km
| named_after = {{nowrap|[[Thetis]] {{small|(Greek mythology)}}<ref name="springer" />}}
| mass=7.6×10<sup>17</sup> [[kilogram|kg]]
| mp_category = [[main-belt]]<ref name="MPC-Thetis" />{{·}}{{small|([[Kirkwood gap|inner]])}}
| density=2.0? g/[[cubic centimetre|cm³]]
| orbit_ref = <ref name="jpldata" />
| gravity=0.0252 m/s²
| epoch = 16 February 2017 ([[Julian day|JD]] 2457800.5)
| escape_velocity=0.0476 km/s
| uncertainty = 0
| rotation=0.5113 d (12.27 h) [http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm <sup>1</sup>]
| observation_arc = 164.55 yr (60,102 days)
| spectral_class=[[S-type asteroid|S]]
| aphelion = 2.7987 [[Astronomical unit|AU]]
| abs_mag=7.76
| perihelion = 2.1436 AU
| albedo=0.1715 [http://dorothy.as.arizona.edu/DSN/IRAS/IMPS/diamalb.tab <sup>2</sup>]
| semimajor = 2.4712 AU
| temperature=~173 [[kelvin|K]]}}
| eccentricity = 0.1325
'''17 Thetis''' (''thee'-tis'') is a large [[Main belt]] [[asteroid]]. It is a [[S-type asteroid|S-type]] asteroid, so it has a relatively bright surface and stony [[silicate]] and [[metal|metallic]] [[iron]]-[[nickel]] composition.
| period = 3.88 [[Julian year (astronomy)|yr]] (1,419 days)
| mean_anomaly = 100.44[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.2537|sup=ms}} / day
| inclination = 5.5902°
| asc_node = 125.56°
| arg_peri = 136.10°
| avg_speed = 18.87 km/s
| dimensions = {{val|84.899|2.027}}<ref name="Masiero-2014" /><br />{{val|90|3.7}}km {{small|([[IRAS]])}}<ref name="SIMPS" /><br />{{val|93.335|2.627}}<ref name="WISE" />
| mass = 1.23{{e|18}} kg<ref name="Baer-2008" />{{efn|name=Thetismass2007}}
| density = {{val|3.21|0.92}} g/cm<sup>3</sup><ref name="Baer-2008" />
| rotation = {{val|12.27048|0.00001}}<ref name="lcdb" /><ref name="Michalowski-1995" />
| albedo = {{val|0.193|0.028}}<ref name="Masiero-2014" />
| spectral_type = [[Asteroid color indices|B–V]] = 0.829<ref name="jpldata" /><br />[[Asteroid color indices|U–B]] = 0.438<ref name="jpldata" /><br />[[S-type asteroid|S]] {{small|([[Tholen classification|Tholen]])}}<ref name="jpldata" /><br />Sl {{small|([[SMASS classification|SMASS]])}}<ref name="jpldata" />{{·}}[[S-type asteroid|S]]<ref name="lcdb" />
| abs_magnitude = 7.76<ref name=jpldata/><ref name="SIMPS" /><ref name="WISE" />{{·}}7.85<ref name="Michalowski-1995" />
}}


'''Thetis''', [[minor planet designation]] '''17 Thetis''', is a stony [[asteroid]] from the inner regions of the [[asteroid belt]], approximately 90 kilometers in diameter. It was discovered on 17 April 1852, by German astronomer [[Robert Luther]] at [[Bilk Observatory]] in Düsseldorf, Germany who deferred to [[Friedrich Wilhelm August Argelander]] the naming his first asteroid discovery after [[Thetis]] from Greek mythology.<ref name="springer" /><ref name="MPC-Thetis" /> Its historical symbol was a dolphin and a star; it is in the pipeline for [[Unicode]] 17.0 as U+1CECA 𜻊 ([[File:Thetis symbol (fixed width).svg|12px]]).<ref name=astunicode>{{cite web |url=https://www.unicode.org/L2/L2023/23207-historical-asteroids.pdf |title=Unicode request for historical asteroid symbols |last1=Bala |first1=Gavin Jared |last2=Miller |first2=Kirk |date=18 September 2023 |website=unicode.org |publisher=Unicode |access-date=26 September 2023 |quote=}}</ref><ref name=pipeline>{{cite web |url=https://unicode.org/alloc/Pipeline.html |title=Proposed New Characters: The Pipeline |author=Unicode |date= |website=unicode.org |publisher=The Unicode Consortium |access-date=6 November 2023 |quote=}}</ref>
It was discovered by [[Karl Theodor Robert Luther|R. Luther]] on [[April 17]], [[1852]]. It was his first asteroid discovery. Its name comes from [[Thetis]], the mother of [[Achilles]] in [[Greek mythology]].


== Description ==
One Thetidian [[star|stellar]] [[occultation]] was observed from [[Oregon]] in [[1999]]. However, the event was not timed.
The asteroid orbits the Sun at a distance of 2.1–2.8&nbsp;[[Astronomical unit|AU]] once every 3 years and 11 months (1,419 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.13 and an [[orbital inclination|inclination]] of 6[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" />


The spectrum of this object indicates that it is an [[S-type asteroid]] with both low and high calcium forms of [[pyroxene]] on the surface, along with less than 20% [[olivine]]. The high-calcium form of pyroxene forms 40% or more of the total pyroxene present, indicating a history of [[igneous rock]] deposits. This suggests that the asteroid underwent differentiation by melting, creating a surface of [[basalt]] rock.<ref name="Sunshine-2004" />
==Aspects==


The mass of Thetis has been calculated from [[Perturbation (astronomy)|perturbations]] by [[4 Vesta]] and [[11 Parthenope]]. In 2007, Baer and Chesley calculated Thetis to have a mass of 1.23{{e|18}} kg{{efn|name=Thetismass2007}} with a density of 3.21 g/cm<sup>3</sup>.<ref name="Baer-2008" />
00017 Thetis Stationär, dann rückläufig 20.09.2005
00017 Thetis Stationär, dann rückläufig 24.12.2006
00017 Thetis Stationär, dann rückläufig 04.06.2008
00017 Thetis Stationär, dann rückläufig 01.10.2009
00017 Thetis Stationär, dann rückläufig 08.01.2011
00017 Thetis Stationär, dann rückläufig 25.06.2012
00017 Thetis Stationär, dann rückläufig 11.10.2013
00017 Thetis Stationär, dann rückläufig 24.01.2015
00017 Thetis Stationär, dann rückläufig 14.07.2016
00017 Thetis Stationär, dann rückläufig 21.10.2017
00017 Thetis Stationär, dann rückläufig 11.02.2019
00017 Thetis Stationär, dann rückläufig 30.07.2020


One Thetidian [[star|stellar]] [[occultation]] was observed from [[Oregon]] in 1999. However, the event was not timed.


This [[minor planet]] was named after [[Thetis]], the mother of [[Achilles]] in [[Greek mythology]].<ref name="springer" />
00017 Thetis Opposition 09.11.2005 1,74593 AE 11,5 mag
00017 Thetis Opposition 08.02.2007 1,61890 AE 11,0 mag
00017 Thetis Opposition 17.07.2008 1,15973 AE 9,9 mag
00017 Thetis Opposition 20.11.2009 1,78755 AE 11,5 mag
00017 Thetis Opposition 21.02.2011 1,53906 AE 10,9 mag
00017 Thetis Opposition 07.08.2012 1,22746 AE 10,1 mag
00017 Thetis Opposition 01.12.2013 1,81341 AE 11,6 mag
00017 Thetis Opposition 08.03.2015 1,45107 AE 10,8 mag
00017 Thetis Opposition 26.08.2016 1,31557 AE 10,4 mag
00017 Thetis Opposition 12.12.2017 1,82324 AE 11,6 mag
00017 Thetis Opposition 24.03.2019 1,35935 AE 10,6 mag
00017 Thetis Opposition 12.09.2020 1,41160 AE 10,7 mag


== Notes ==
00017 Thetis Stationär, dann rechtläufig 31.12.2005
{{notelist|refs=
00017 Thetis Stationär, dann rechtläufig 30.03.2007
00017 Thetis Stationär, dann rechtläufig 26.08.2008
00017 Thetis Stationär, dann rechtläufig 11.01.2010
00017 Thetis Stationär, dann rechtläufig 11.04.2011
00017 Thetis Stationär, dann rechtläufig 18.09.2012
00017 Thetis Stationär, dann rechtläufig 22.01.2014
00017 Thetis Stationär, dann rechtläufig 26.04.2015
00017 Thetis Stationär, dann rechtläufig 09.10.2016
00017 Thetis Stationär, dann rechtläufig 01.02.2018
00017 Thetis Stationär, dann rechtläufig 11.05.2019
00017 Thetis Stationär, dann rechtläufig 29.10.2020


{{efn|name=Thetismass2007|1=Mass of Thetis = {{val|6.17|0.64|e=-13|u={{Solar mass}}}}}}
00017 Thetis Konjunktion 12.03.2005
00017 Thetis Konjunktion 23.06.2006
00017 Thetis Konjunktion 19.10.2007
00017 Thetis Konjunktion 26.03.2009
00017 Thetis Konjunktion 05.07.2010
00017 Thetis Konjunktion 08.11.2011
00017 Thetis Konjunktion 09.04.2013
00017 Thetis Konjunktion 17.07.2014
00017 Thetis Konjunktion 30.11.2015
00017 Thetis Konjunktion 22.04.2017
00017 Thetis Konjunktion 29.07.2018
00017 Thetis Konjunktion 22.12.2019
00017 Thetis Konjunktion 05.05.2021


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


== References ==
{{MinorPlanets Navigator|16 Psyche|18 Melpomene}}
{{reflist|refs=
{{MinorPlanets_Footer}}


<ref name="jpldata">{{cite web
[[Category:Main Belt asteroids|Thetis]]
|type = 2016-11-11 last obs.
[[Category:Asteroids named from Greek mythology|Thetis]]
|title = JPL Small-Body Database Browser: 17 Thetis
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000017
|publisher = [[Jet Propulsion Laboratory]]
|accessdate = 24 March 2017}}</ref>


<ref name="springer">{{cite book
[[de:Thetis (Asteroid)]]
|title = Dictionary of Minor Planet Names – (17) Thetis
[[es:(17) Tetis]]
|last = Schmadel | first = Lutz D.
[[fr:(17) Thétis]]
|publisher = [[Springer Berlin Heidelberg]]
[[it:17 Thetis]]
|page = 17
[[nn:17 Thetis]]
|date = 2007
[[pl:17 Thetis]]
|isbn = 978-3-540-00238-3
[[sk:17 Thetis]]
|doi = 10.1007/978-3-540-29925-7_18 }}</ref>

<ref name="MPC-Thetis">{{cite web
|title = 17 Thetis
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=17
|accessdate = 24 March 2017}}</ref>

<ref name="Sunshine-2004">{{Cite journal
|first1 = Jessica M. |last1 = Sunshine
|first2 = Schelte J. |last2 = Bus
|first3 = Timothy J. |last3 = McCoy
|first4 = Thomas H. |last4 = Burbine
|first5 = Catherine M. |last5 = Corrigan
|first6 = Richard P. |last6 = Binzel
|date = August 2004
|title = High-calcium pyroxene as an indicator of igneous differentiation in asteroids and meteorites
|journal = Meteoritics and Planetary Science
|volume = 39
|issue = 8
|pages = 1343–1357
|bibcode = 2004M&PS...39.1343S
|doi = 10.1111/j.1945-5100.2004.tb00950.x|doi-access=
}}</ref>

<ref name="Baer-2008">{{Cite journal
|first1 = James |last1 = Baer
|first2 = Steven R. |last2 = Chesley
|date = January 2008
|title = Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris
|journal = Celestial Mechanics and Dynamical Astronomy
|volume = 100
|issue = 1
|pages = 27–42
|bibcode = 2008CeMDA.100...27B
|doi = 10.1007/s10569-007-9103-8|doi-access= free
}}</ref>

<ref name="Masiero-2014">{{cite journal
|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}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (17) Thetis
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=17%7CThetis
|accessdate = 24 March 2017}}</ref>

<ref name="WISE">{{cite journal
|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}}</ref>

<ref name="SIMPS">{{cite journal
|first1 = E. F. |last1 = Tedesco
|first2 = P. V. |last2 = Noah
|first3 = M. |last3 = Noah
|first4 = S. D. |last4 = Price
|date = October 2004
|title = IRAS Minor Planet Survey V6.0
|url = https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab
|journal = NASA Planetary Data System
|volume = 12
|pages = IRAS-A-FPA-3-RDR-IMPS-V6.0
|bibcode = 2004PDSS...12.....T
|accessdate = 30 October 2019}}</ref>

<ref name="Michalowski-1995">{{Cite journal
|display-authors = 6
|first1 = T. |last1 = Michalowski
|first2 = F. P. |last2 = Velichko
|first3 = M. |last3 = Di Martino
|first4 = Yu. N. |last4 = Krugly
|first5 = V. G. |last5 = Kalashnikov
|first6 = V. G. |last6 = Shevchenko
|first7 = P. V. |last7 = Birch
|first8 = W. D. |last8 = Sears
|first9 = P. |last9 = Denchev
|first10 = T. |last10 = Kwiatkowski
|date = December 1995
|title = Models of four asteroids: 17 Thetis, 52 Europa, 532 Herculina, and 704 Interamnia.
|journal = Icarus
|volume = 118
|issue = 2
|pages = 292–301
|bibcode = 1995Icar..118..292M
|doi = 10.1006/icar.1995.1192}}</ref>

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

== External links ==
{{commons category}}
* [https://web.archive.org/web/20140108195730/http://www.asteroidoccultation.com/observations/Results/Data2011/Thetis_withModel2Rotated2.jpg 2011-Apr-22 Occultation] (Durech Model) / [https://web.archive.org/web/20140108170501/http://www.asteroidoccultation.com/observations/Results/index2011.html (2011 Asteroidal Occultation Results for North America)]
* [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/page1cou.html#000017 Asteroids and comets rotation curves – (17) Thetis] at Observatoire de Genève, Raoul Behrend
* [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
* {{AstDys|17}}
* {{JPL small body}}

{{Minor planets navigator |16 Psyche |number=17 |18 Melpomene}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:000017}}
[[Category:Background asteroids]]
[[Category:Discoveries by Robert Luther|Thetis]]
[[Category:Named minor planets|Thetis]]
[[Category:S-type asteroids (Tholen)]]
[[Category:Sl-type asteroids (SMASS)]]
[[Category:Astronomical objects discovered in 1852|18520417]]

Revision as of 23:34, 25 April 2024

17 Thetis
Star field showing asteroid Thetis in the center
Discovery[1]
Discovered byR. Luther
Discovery siteDüsseldorf-Bilk Obs.
Discovery date17 April 1852
Designations
(17) Thetis
Pronunciation/ˈθiːtɪs/[2]
Named after
Thetis (Greek mythology)[3]
1954 SO1 · A913 CA
A916 YF
main-belt[4] · (inner)
AdjectivesThetidian /θɛˈtɪdiən/[5]
Symbol (historical)
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc164.55 yr (60,102 days)
Aphelion2.7987 AU
Perihelion2.1436 AU
2.4712 AU
Eccentricity0.1325
3.88 yr (1,419 days)
18.87 km/s
100.44°
0° 15m 13.32s / day
Inclination5.5902°
125.56°
136.10°
Physical characteristics
Dimensions84.899±2.027[6]
90±3.7km (IRAS)[7]
93.335±2.627[8]
Mass1.23×1018 kg[9][a]
Mean density
3.21±0.92 g/cm3[9]
12.27048±0.00001[10][11]
0.193±0.028[6]
B–V = 0.829[1]
U–B = 0.438[1]
S (Tholen)[1]
Sl (SMASS)[1] · S[10]
7.76[1][7][8] · 7.85[11]

Thetis, minor planet designation 17 Thetis, is a stony asteroid from the inner regions of the asteroid belt, approximately 90 kilometers in diameter. It was discovered on 17 April 1852, by German astronomer Robert Luther at Bilk Observatory in Düsseldorf, Germany who deferred to Friedrich Wilhelm August Argelander the naming his first asteroid discovery after Thetis from Greek mythology.[3][4] Its historical symbol was a dolphin and a star; it is in the pipeline for Unicode 17.0 as U+1CECA 𜻊 ().[12][13]

Description

The asteroid orbits the Sun at a distance of 2.1–2.8 AU once every 3 years and 11 months (1,419 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the ecliptic.[1]

The spectrum of this object indicates that it is an S-type asteroid with both low and high calcium forms of pyroxene on the surface, along with less than 20% olivine. The high-calcium form of pyroxene forms 40% or more of the total pyroxene present, indicating a history of igneous rock deposits. This suggests that the asteroid underwent differentiation by melting, creating a surface of basalt rock.[14]

The mass of Thetis has been calculated from perturbations by 4 Vesta and 11 Parthenope. In 2007, Baer and Chesley calculated Thetis to have a mass of 1.23×1018 kg[a] with a density of 3.21 g/cm3.[9]

One Thetidian stellar occultation was observed from Oregon in 1999. However, the event was not timed.

This minor planet was named after Thetis, the mother of Achilles in Greek mythology.[3]

Notes

  1. ^ a b Mass of Thetis = (6.17±0.64)×10−13 M☉

References

  1. ^ a b c d e f g h "JPL Small-Body Database Browser: 17 Thetis" (2016-11-11 last obs.). Jet Propulsion Laboratory. Retrieved 24 March 2017.
  2. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (17) Thetis. Springer Berlin Heidelberg. p. 17. doi:10.1007/978-3-540-29925-7_18. ISBN 978-3-540-00238-3.
  4. ^ a b "17 Thetis". Minor Planet Center. Retrieved 24 March 2017.
  5. ^ Herbert (1828) Nimrod: a discourse on certain passages of history and fable, vol. 2
  6. ^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
  7. ^ a b Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 30 October 2019.
  8. ^ a b Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  9. ^ a b c Baer, James; Chesley, Steven R. (January 2008). "Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris". Celestial Mechanics and Dynamical Astronomy. 100 (1): 27–42. Bibcode:2008CeMDA.100...27B. doi:10.1007/s10569-007-9103-8.
  10. ^ a b "LCDB Data for (17) Thetis". Asteroid Lightcurve Database (LCDB). Retrieved 24 March 2017.
  11. ^ a b Michalowski, T.; Velichko, F. P.; Di Martino, M.; Krugly, Yu. N.; Kalashnikov, V. G.; Shevchenko, V. G.; et al. (December 1995). "Models of four asteroids: 17 Thetis, 52 Europa, 532 Herculina, and 704 Interamnia". Icarus. 118 (2): 292–301. Bibcode:1995Icar..118..292M. doi:10.1006/icar.1995.1192.
  12. ^ Bala, Gavin Jared; Miller, Kirk (18 September 2023). "Unicode request for historical asteroid symbols" (PDF). unicode.org. Unicode. Retrieved 26 September 2023.
  13. ^ Unicode. "Proposed New Characters: The Pipeline". unicode.org. The Unicode Consortium. Retrieved 6 November 2023.
  14. ^ Sunshine, Jessica M.; Bus, Schelte J.; McCoy, Timothy J.; Burbine, Thomas H.; Corrigan, Catherine M.; Binzel, Richard P. (August 2004). "High-calcium pyroxene as an indicator of igneous differentiation in asteroids and meteorites". Meteoritics and Planetary Science. 39 (8): 1343–1357. Bibcode:2004M&PS...39.1343S. doi:10.1111/j.1945-5100.2004.tb00950.x.
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