تایوان ۲۱۶۹

از ویکی‌پدیا، دانشنامهٔ آزاد
(تغییرمسیر از سیارک ۲۱۶۹)
پرش به ناوبری پرش به جستجو
فارسیEnglish
سیارک ۲۱۶۹
مبدا مه ۱۴, ۲۰۰۸
خروج از مرکز ۰.۰۵۲۲۰۴۸
آنومالی متوسط ۱۱۸.۳۲۹۳۱
زاویه انحراف ۱.۵۲۹۴۹
اوج ۲.۹۳۲۷۹۲۴
حضیض ۲.۶۴۱۷۷۳۴
تناوب مداری ۱۶۹۹.۶۹۱۰۳۳۹

سیارک ۲۱۶۹ (به انگلیسی: 2169 Taiwan، نامگذاری:1964VP1) دو هزار و صد و شصت و نهمین سیارک کشف شده‌است[۱] که در ۹ نوامبر ۱۹۶۴ کشف شد.[۲]

قدر مطلق سیارک برابر ۱۲٫۰۰ است.[۳]

منابع[ویرایش]

  1. طبق اینجا شماره سیارک معرف شماره کشف شدن آنهاست.
  2. «فهرست سیارک‌های شماره‌دار»، دانشگاه هاروارد بازیابی‌شده در تاریخ ۲۸ سپتامبر ۲۰۰۹
  3. http://starbase.jpl.nasa.gov/msx-a-spirit3-5-sbn0003-mimps-v1.0/as2004_0001/data/simps04/addl.tab

پیوند به بیرون[ویرایش]


2169 Taiwan
Discovery [1]
Discovered byPurple Mountain Obs.
Discovery sitePurple Mountain Obs.
Discovery date9 November 1964
Designations
MPC designation(2169) Taiwan
Named after
Taiwan
(Island of Taiwan)[2]
1964 VP1 · 1938 DV1
1975 BH1 · 1977 RF8
1979 FG
main-belt · (middle)[3]
Astrid[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc79.28 yr (28,957 days)
Aphelion2.9244 AU
Perihelion2.6564 AU
2.7904 AU
Eccentricity0.0480
4.66 yr (1,703 days)
116.98°
0° 12m 41.4s / day
Inclination1.5286°
71.855°
358.45°
Physical characteristics
Dimensions14.39 km (calculated)[3]
16.52±4.57 km[5]
17.96±4.92 km[6]
18.22±0.51 km[7]
18.39±0.30 km[8]
19.263±0.139 km[9][10]
7.252±0.0014 h[11]
0.042±0.006[9]
0.0423±0.0059[10]
0.05±0.06[5]
0.05±0.07[6]
0.057 (assumed)[3]
0.057±0.015[8]
0.085±0.005[7]
SMASS = C[1] · C[3][12]
12.00[7] · 12.40[8] · 12.488±0.003 (R)[11] · 12.50[6][10] · 12.59±0.32[12] · 12.6[1] · 12.69[5] · 12.94[3]

2169 Taiwan, provisional designation 1964 VP1, is a carbonaceous Astridian asteroid from the central regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 9 November 1964, by astronomers at the Purple Mountain Observatory near Nanking, China.[13] It was named for Taiwan.[2]

Orbit and classification

Taiwan is a member of the Astrid family (515), a smaller asteroid family of nearly 500 carbonaceous asteroids. The family is located in the outermost central main-belt, near a prominent Kirkwood gap, that marks the 5:2 orbital resonance with Jupiter, and divides the asteroid belt into a central and outer part.[4][14][15]:23

Taiwan orbits the Sun at a distance of 2.7–2.9 AU once every 4 years and 8 months (1,703 days). Its orbit has an eccentricity of 0.05 and an inclination of 2° with respect to the ecliptic.[1]

The body's observation arc begins with its first identification as 1938 DV1 at Heidelberg Observatory in February 1938, almost 27 years prior to its official discovery observation at Nanking.[13]

Physical characteristics

In the SMASS classification, and according to PanSTARRS photometric survey, Taiwan is a carbonaceous C-type asteroid.[1][12]

Rotation period

In September 2010, a rotational lightcurve of Taiwan was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 7.252 hours with a brightness variation of 0.17 magnitude (U=2).[11]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Taiwan measures between 16.52 and 19.263 kilometers in diameter and its surface has an albedo between 0.042 and 0.085.[5][6][7][8][9][10]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 14.39 kilometers based on an absolute magnitude of 12.94.[3]

Naming

This minor planet was named after the Island of Taiwan (former Formosa). Taiwan, or the Republic of China, is a country southeast of mainland China.[2] The official naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5184).[16]

References

  1. ^ a b c d e f "JPL Small-Body Database Browser: 2169 Taiwan (1964 VP1)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 4 September 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(2169) Taiwan". Dictionary of Minor Planet Names – (2169) Taiwan. Springer Berlin Heidelberg. p. 176. doi:10.1007/978-3-540-29925-7_2170. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (2169) Taiwan". Asteroid Lightcurve Database (LCDB). Retrieved 4 September 2017.
  4. ^ a b "Asteroid 2169 Taiwan – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
  5. ^ a b c d Nugent, 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. Retrieved 4 September 2017.
  6. ^ a b c d Nugent, 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. Retrieved 4 September 2017.
  7. ^ a b c d 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. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
  8. ^ a b c d 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. Retrieved 4 September 2017.
  9. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 4 September 2017.
  10. ^ 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.
  11. ^ a b c Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 4 September 2017.
  12. ^ a b c 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. Retrieved 4 September 2017.
  13. ^ a b "2169 Taiwan (1964 VP1)". Minor Planet Center. Retrieved 4 September 2017.
  14. ^ Vokrouhlický, D.; Broz, M.; Bottke, W. F.; Nesvorný, D.; Morbidelli, A. (May 2006). "Yarkovsky/YORP chronology of asteroid families" (PDF). Icarus. 182 (1): 118–142. Bibcode:2006Icar..182..118V. doi:10.1016/j.icarus.2005.12.010. Retrieved 4 September 2017.
  15. ^ 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.
  16. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 September 2017.

External links