Share to: share facebook share twitter share wa share telegram print page

 

71 Niobe

71 Niobe
Lightcurve-based 3D-model of Niobe
Discovery [1]
Discovered byR. Luther
Discovery siteDüsseldorf Obs.
Discovery date13 August 1861
Designations
(71) Niobe
Pronunciation/ˈnaɪəbiː/[2]
Named after
Νιόβη Niobē (Greek mythology)[3]
main-belt [1][4] · (middle)
Gallia [5]
AdjectivesNiobean /naɪəˈbiːən/[2]
Orbital characteristics [4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc154.10 yr (56,286 d)
Aphelion3.2348 AU
Perihelion2.2790 AU
2.7569 AU
Eccentricity0.1733
4.58 yr (1,672 d)
178.02°
0° 12m 55.08s / day
Inclination23.259°
316.02°
266.88°
Physical characteristics
75.87±3.28 km[6]
80.86±0.80 km[7]
83.42±1.7 km[8]
92.75 km (taken)[9]
92.753 km[10]
92.842±0.644 km[11]
11 h[12]
11.21 h[13]
14.34±0.05 h[14]
14.34 h[15][14]
14.38±0.02 h[16]
35.5±0.1 h[17][a]
35.617948 h[9]
35.81±0.01 h[18]
35.8521±0.0005 h[19]
35.864±0.002 h[20]
0.2446[10]
0.2475±0.0346[11]
0.3052±0.013[8]
0.326±0.008[7]
0.369±0.033[6]
Tholen = S [4]
SMASS = Xe [4] · M [11] · A [21] · X [9]
B–V = 0.803[4]
U–B = 0.439[4]
7.30[4][6][7][8][11]
7.31[9]
7.31±0.09[10][16]

71 Niobe[b] is a stony Gallia asteroid and relatively slow rotator from the central regions of the asteroid belt, approximately 90 kilometers (56 miles) in diameter. It was discovered by the German astronomer Robert Luther on 13 August 1861, and named after Niobe, a character in Greek mythology. In 1861, the brightness of this asteroid was shown to vary by astronomer Friedrich Tietjen.[22]

Description

Niobe is a member of the Gallia family (802), a small family of nearly 200 known stony asteroids.[23]

In 2006, it was examined by radar using the Arecibo Observatory radio telescope in Puerto Rico. This was supplemented by optical observations intended to build a lightcurve. The resulting estimated rotation period of 35.6 hours, or 1.48 Earth days, superseded an earlier estimate of the rotation period as 14.3 hours. The radar data produced an estimate of a maximum equatorial diameter of 94 km, which is consistent with earlier estimates based upon infrared data if the shape is assumed to be slightly elongated.[17][a]

The rotation period was further refined to 35.864 ± 0.001 hours during observations through 2010. Six stellar occultations of this asteroid between 2004 and 2007 produced chords ranging from 13 to 72 km (8–45 mi), which are statistically consistent with the published maximum diameter estimates.[20]

Notes

  1. ^ a b Lightcurve plot of 71 Niobe, Palmer Divide Observatory, B. D. Warner (2006): rotation period 35.5±0.1 hours with a brightness amplitude of 0.22±0.02 mag. Quality code of 2+. Summary figures at the LCDB
  2. ^ With the stress on the first syllable.

References

  1. ^ a b "71 Niobe". Minor Planet Center. Retrieved 18 April 2018.
  2. ^ a b "Niobe". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ Schmadel, Lutz D. (2007). "(71) Niobe". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 22. doi:10.1007/978-3-540-29925-7_72. ISBN 978-3-540-00238-3.
  4. ^ a b c d e f g "JPL Small-Body Database Browser: 71 Niobe" (2018-02-21 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2018.
  5. ^ "Asteroid 71 Niobe". Small Bodies Data Ferret. Retrieved 24 October 2019.
  6. ^ a b c Masiero, 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.
  7. ^ a b c Usui, 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)
  8. ^ a b c 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 22 October 2019.
  9. ^ a b c d "LCDB Data for (71) Niobe". Asteroid Lightcurve Database (LCDB). Retrieved 18 April 2018.
  10. ^ a b c Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 18 April 2018.
  11. ^ a b c d 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.
  12. ^ Barucci, M. A.; Fulchignoni, M.; Burchi, R.; D'Ambrosio, V. (January 1985). "Rotational properties of ten main belt asteroids - Analysis of the results obtained by photoelectric photometry [ Erratum: 1985Icar...62..173B ]". Icarus. 61 (1): 152–162. Bibcode:1985Icar...61..152B. doi:10.1016/0019-1035(85)90161-7. ISSN 0019-1035. Retrieved 18 April 2018.
  13. ^ Lustig, G.; Dvorak, R. (December 1974). "Photometric investigations of the asteroids /43/ Ariadne and /71/ Niobe". Acta Physica Austriaca. 43 (1–2): 89–97.InGerman.ResearchsupportedbytheOesterreichischeNationalbank. Bibcode:1975AcPhA..43...89L. Retrieved 18 April 2018.
  14. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (71) Niobe". Geneva Observatory. Retrieved 18 April 2018.
  15. ^ Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; Magnusson, P.; Festin, L.; et al. (March 1998). "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids". Astronomy and Astrophysics Supplement. 128 (3): 525–540. Bibcode:1998A&AS..128..525P. doi:10.1051/aas:1998393.
  16. ^ a b Harris, A. W.; Young, J. W. (October 1989). "Asteroid lightcurve observations from 1979-1981". Icarus. 81 (2): 314–364. Bibcode:1989Icar...81..314H. doi:10.1016/0019-1035(89)90056-0. ISSN 0019-1035. Retrieved 18 April 2018.
  17. ^ a b Warner, Brian D.; Shepard, Michael K.; Harris, Alan W.; Pravec, Petr; Crawford, Greg; Husarik, Marek (December 2006). "Analysis of the lightcurve of 71 Niobe". The Minor Planet Bulletin. 33 (4): 102–103. Bibcode:2006MPBu...33..102W. ISSN 1052-8091. Retrieved 18 April 2018.
  18. ^ Sada, Pedro V.; Warner, Brian D. (June 2007). "Rotation Period of Asteroid 340 Eduarda and Refined Period for Asteroid 71 Niobe". The Minor Planet Bulletin. 34 (2): 37–38. Bibcode:2007MPBu...34...37S. ISSN 1052-8091. Retrieved 18 April 2018.
  19. ^ Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo, M.; et al. (February 2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". Astronomy and Astrophysics. 586: 24. arXiv:1510.07422. Bibcode:2016A&A...586A.108H. doi:10.1051/0004-6361/201527441.
  20. ^ a b Pilcher, Frederick (July 2010). "A New Investigation of the Rotation Period and Size of 71 Niobe". The Minor Planet Bulletin. 37 (3): 98–99. Bibcode:2010MPBu...37...98P. ISSN 1052-8091. Retrieved 18 April 2018.
  21. ^ Belskaya, I. N.; Fornasier, S.; Tozzi, G. P.; Gil-Hutton, R.; Cellino, A.; Antonyuk, K.; et al. (March 2017). "Refining the asteroid taxonomy by polarimetric observations". Icarus. 284: 30–42. Bibcode:2017Icar..284...30B. doi:10.1016/j.icarus.2016.11.003. hdl:11336/63617. Retrieved 18 April 2018.
  22. ^ Harwood, Margaret (December 1924). "Variations in the Light of Asteroids". Harvard College Observatory Circular. 269: 1–15. Bibcode:1924HarCi.269....1H. Retrieved 18 April 2018.
  23. ^ 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.
Index: pl ar de en es fr it arz nl ja pt ceb sv uk vi war zh ru af ast az bg zh-min-nan bn be ca cs cy da et el eo eu fa gl ko hi hr id he ka la lv lt hu mk ms min no nn ce uz kk ro simple sk sl sr sh fi ta tt th tg azb tr ur zh-yue hy my ace als am an hyw ban bjn map-bms ba be-tarask bcl bpy bar bs br cv nv eml hif fo fy ga gd gu hak ha hsb io ig ilo ia ie os is jv kn ht ku ckb ky mrj lb lij li lmo mai mg ml zh-classical mr xmf mzn cdo mn nap new ne frr oc mhr or as pa pnb ps pms nds crh qu sa sah sco sq scn si sd szl su sw tl shn te bug vec vo wa wuu yi yo diq bat-smg zu lad kbd ang smn ab roa-rup frp arc gn av ay bh bi bo bxr cbk-zam co za dag ary se pdc dv dsb myv ext fur gv gag inh ki glk gan guw xal haw rw kbp pam csb kw km kv koi kg gom ks gcr lo lbe ltg lez nia ln jbo lg mt mi tw mwl mdf mnw nqo fj nah na nds-nl nrm nov om pi pag pap pfl pcd krc kaa ksh rm rue sm sat sc trv stq nso sn cu so srn kab roa-tara tet tpi to chr tum tk tyv udm ug vep fiu-vro vls wo xh zea ty ak bm ch ny ee ff got iu ik kl mad cr pih ami pwn pnt dz rmy rn sg st tn ss ti din chy ts kcg ve
Prefix: a b c d e f g h i j k l m n o p q r s t u v w x y z 0 1 2 3 4 5 6 7 8 9

Portal di Ensiklopedia Dunia

Portal : Agama
Agama
Portal : Bahasa
Bahasa
Portal : Biografi
Biografi
Portal : Budaya
Budaya
Portal : Ekonomi
Ekonomi
Portal : Elektronika
Elektronika
Portal : Film
Film
Portal : Filsafat
Filsafat
Portal : Geografi
Geografi
Portal : Indonesia
Indonesia
Portal : Ilmu
Ilmu
Portal : Lingkungan
Lingkungan
Portal : Masyarakat
Masyarakat
Portal : Matematika
Matematika
Portal : Militer
Militer
Portal : Mitologi
Mitologi
Portal : Musik
Musik
Portal : Olahraga
Olahraga
Portal : Pendidikan
Pendidikan
Portal : Politik
Politik
Portal : Sastra
Sastra
Portal : Sejarah
Sejarah
Portal : Seni
Seni
Portal : Teknologi
Teknologi
Kembali kehalaman sebelumnya