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173 Ino

From Wikipedia, the free encyclopedia

173 Ino
Discovery[1]
Discovered byA. Borrelly
Discovery siteMarseille
Discovery date1 August 1877
Designations
(173) Ino
Pronunciation/ˈaɪnoʊ/EYE-noh[2]
Named after
ἸνώĪnṓ[3](Greek mythology)
A877 PA; 1922 SB
main-belt[1][4] · (middle)
Ino[5]
AdjectivesInoan (/aɪˈnoʊən/eye-NOH-ən)[6]
Orbital characteristics[4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc138.75yr (50,678 d)
Aphelion3.3142AU
Perihelion2.1708 AU
2.7425 AU
Eccentricity0.2085
4.54 yr (1,659 d)
307.27°
0° 13m 1.2s / day
Inclination14.197°
148.18°
228.89°
Physical characteristics
145±3 km[7]
119±27 km[8]
125.8±1.5 km[9]
148±42 km[10]
154.1±3.5 km[11]
160.6 km[12]
Flattening0.24[a]
Mass(2.2±1.3)×1018 kg[7]
(4.79±3.11)×1018 kg[13]
1.4±0.8 g/cm3[7]
2.23±1.47 g/cm3[13]
5.93 h[14]
6.1±0.2 h[15]
6.106±0.001 h[15]
6.1088±0.0007 h[15]
6.11 h[16]
6.113±0.002 h[17]
6.11651 h[18]
6.15 h[19][4]
6.163 h[20]
0.061 (calculated)[7]
0.059[12]
0.06±0.02[10]
0.0642±0.003[11]
0.07±0.05[8]
0.096±0.018[9][4]
Tholen =C[4]
SMASS =Xk[4]
B–V = 0.705[4]
U–B = 0.305[4]
7.66[9][10][11][12][21]
7.99[4]
7.80±0.05[22]
7.90[8][23]

173 Ino is a largeasteroid and the parent body of theIno family, located in the central regions of theasteroid belt, approximately 150 kilometers (93 miles) in diameter. It was discovered on 1 August 1877, by French astronomerAlphonse Borrelly atMarseille Observatory in southern France, and named after the queenIno fromGreek mythology.[1][3] The dark Xk-type asteroid has arotation period of 6.15 hours.[21]

Orbit and classification

[edit]

Ino is the parent body and namesake of theIno family (522),[5] anasteroid family in the intermediate main belt with nearly 500 known members.[24]: 23  The adjectival form of the asteroid name is "Inoan".

It orbits the Sun in thecentral main-belt at a distance of 2.2–3.3 AU once every 4 years and 6 months (1,659 days;semi-major axis of 2.74 AU). Its orbit has aneccentricity of 0.21 and aninclination of 14° with respect to theecliptic.[4] The body'sobservation arc begins atDüsseldorf-Bilk Observatory in January 1879, five months after its official discovery observation at Marseilles.[1]

Physical characteristics

[edit]

In theTholen classification,Ino is a common carbonaceousC-type, while in theSMASS classification it is a Xk-subtype that transitions between theX-type and uncommonK-type asteroids.[4]

Multiplephotometric studies of this asteroid were performed between 1978 and 2002. The combined data gave an irregular, asymmetricallight curve with a period of 6.163 ± 0.005 hours and a brightness variation of 0.10–0.15 inmagnitude. The asteroid is rotating in aretrograde direction.[18]

Notes

[edit]
  1. ^Flattening derived from the maximum aspect ratio (c/a):f=1−ca{\displaystyle f=1-{\frac {c}{a}}}, where (c/a) =0.76±0.06.[7]

References

[edit]
  1. ^abcd"173 Ino".Minor Planet Center. Retrieved18 April 2018.
  2. ^Noah Webster (1884)A Practical Dictionary of the English Language
  3. ^abSchmadel, Lutz D. (2007). "(173) Ino".Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 30.doi:10.1007/978-3-540-29925-7_174.ISBN 978-3-540-00238-3.
  4. ^abcdefghijk"JPL Small-Body Database Browser: 173 Ino" (2017-10-21 last obs.).Jet Propulsion Laboratory. Retrieved18 April 2018.
  5. ^ab"Asteroid 173 Ino".Small Bodies Data Ferret. Retrieved24 October 2019.
  6. ^George Stuart (1882)The Eclogues, Georgics, and Moretum of Virgil, p. 271
  7. ^abcdeP. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis.Astronomy & Astrophysics 54, A56
  8. ^abcNugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016)."NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos".The Astronomical Journal.152 (3): 12.arXiv:1606.08923.Bibcode:2016AJ....152...63N.doi:10.3847/0004-6256/152/3/63.
  9. ^abcMasiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (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.arXiv:1209.5794.Bibcode:2012ApJ...759L...8M.doi:10.1088/2041-8205/759/1/L8.
  10. ^abcNugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos".The Astrophysical Journal.814 (2): 13.arXiv:1509.02522.Bibcode:2015ApJ...814..117N.doi:10.1088/0004-637X/814/2/117.
  11. ^abcTedesco, 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. Retrieved22 October 2019.
  12. ^abcUsui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011)."Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey".Publications of the Astronomical Society of Japan.63 (5):1117–1138.Bibcode:2011PASJ...63.1117U.doi:10.1093/pasj/63.5.1117. (online,AcuA catalog p. 153)
  13. ^abCarry, B. (December 2012), "Density of asteroids",Planetary and Space Science,73 (1):98–118,arXiv:1203.4336,Bibcode:2012P&SS...73...98C,doi:10.1016/j.pss.2012.03.009 See Table 1.
  14. ^Schober, H. J. (December 1978)."Photometric Variations of the Minor Planets 55 Pandora and 173 Ino during the Opposition in 1977: Light Curves and Rotation Periods".Astronomy and Astrophysics Supplement.34: 377.Bibcode:1978A&AS...34..377S. Retrieved18 April 2018.
  15. ^abcBehrend, Raoul."Asteroids and comets rotation curves – (173) Ino". Geneva Observatory. Retrieved18 April 2018.
  16. ^Erikson, A. (December 1989)."Improvement of Rotation Periods for the Asteroids 12 Victoria, 173 Ino and 1245 Calvinia".Asteroids: 55.Bibcode:1990acm..proc...55E. Retrieved18 April 2018.
  17. ^Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (January 2009). "CCD and photon-counting photometric observations of asteroids carried out at Padova and Catania observatories".Planetary and Space Science.57 (1):1–9.arXiv:0810.1560.Bibcode:2009P&SS...57....1G.doi:10.1016/j.pss.2008.09.014.
  18. ^abMichalowski, T.; Kaasalainen, M.; Marciniak, A.; Denchev, P.; Kwiatkowski, T.; Kryszczynska, A.; et al. (November 2005)."Photometry and models of selected main belt asteroids. II. 173 Ino, 376 Geometria, and 451 Patientia".Astronomy and Astrophysics.443 (1):329–335.Bibcode:2005A&A...443..329M.doi:10.1051/0004-6361:20053656.
  19. ^Debehogne, H.; Lagerkvist, C.-I.; Magnusson, P.; Hahn, G. (December 1989)."Physical studies of asteroids XX - Photoelectric photometry of asteroids".Asteroids: 45.Bibcode:1990acm..proc...45D. Retrieved18 April 2018.
  20. ^Michalowski, Tadeusz (December 1993)."Poles, shapes, senses of rotation, and sidereal periods of asteroids".Icarus.106 (2): 563.Bibcode:1993Icar..106..563M.doi:10.1006/icar.1993.1193. Retrieved18 April 2018.
  21. ^ab"LCDB Data for (173) Ino". Asteroid Lightcurve Database (LCDB). Retrieved18 April 2018.
  22. ^Warner, Brian D. (December 2007)."Initial Results of a Dedicated H-G Project".The Minor Planet Bulletin.34 (4):113–119.Bibcode:2007MPBu...34..113W.ISSN 1052-8091. Retrieved18 April 2018.
  23. ^Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results".Icarus.261:34–47.arXiv:1506.00762.Bibcode:2015Icar..261...34V.doi:10.1016/j.icarus.2015.08.007.
  24. ^Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families".Asteroids IV. pp. 297–321.arXiv:1502.01628.Bibcode:2015aste.book..297N.doi:10.2458/azu_uapress_9780816532131-ch016.ISBN 9780816532131.

External links

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