استیرنز ۲۰۳۵

از ویکی‌پدیا، دانشنامهٔ آزاد
(تغییرمسیر از سیارک ۲۰۳۵)
پرش به ناوبری پرش به جستجو
فارسیEnglish
سیارک ۲۰۳۵
اکتشاف
تاریخ کشف سپتامبر ۲۱, ۱۹۷۳
مبدا مه ۱۴, ۲۰۰۸
خروج از مرکز ۰.۱۳۱۳۰۴۴
آنومالی متوسط ۲۰۲.۱۹۳۰۷
زاویه انحراف ۲۷.۷۵۳۷۹
اوج ۲.۱۳۱۵۵۱۰
حضیض ۱.۶۳۶۷۵۵۸
تناوب مداری ۹۴۴.۶۵۴۱۰۶۶

سیارک ۲۰۳۵ (به انگلیسی: 2035 Stearns، نامگذاری:1973SC) دو هزار و سی و پنجمین سیارک کشف شده‌است[۱] که در ۲۱ سپتامبر ۱۹۷۳ کشف شد.[۲]

قدر مطلق سیارک برابر ۱۲٫۶۱ 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]


2035 Stearns
Discovery [1]
Discovered byJ. B. Gibson
Discovery siteEl Leoncito Complex
Discovery date21 September 1973
Designations
MPC designation(2035) Stearns
Named after
Carl Leo Stearns[1]
(American astronomer)
1973 SC · 1973 UG
Mars-crosser[2]
Hungaria[1][3]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc44.35 yr (16,199 d)
Aphelion2.1317 AU
Perihelion1.6366 AU
1.8841 AU
Eccentricity0.1314
2.59 yr (945 d)
134.07°
0° 22m 51.96s / day
Inclination27.751°
77.035°
200.71°
Earth MOID0.6305 AU (245 LD)
Physical characteristics
Mean diameter
4.82±0.52 km[4]
5.28 km (derived)[3]
6.00±1.20 km[5]
51.89±0.20 h[6]
85±0.1 h[7]
93±1 h[8][a]
0.40 (assumed)[3]
0.443±0.177[5]
0.65±0.30[4]
Tholen = E[2]
SMASS = Xe[2][3][9]
B–V = 0.737[2]
U–B = 0.280[2]
V–R = 0.440[7]
12.61[2][4][5]
13.0[3][10]

2035 Stearns, provisional designation 1973 SC, is a bright Hungaria asteroid and sizable Mars-crosser inside the inner regions of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 21 September 1973, by American astronomer James Gibson at the Leoncito Astronomical Complex in Argentina.[1] The transitional E-type asteroid has a long rotation period of 93 hours.[3] It was named after American astronomer Carl Leo Stearns.[1]

Orbit and classification

Stearns is a dynamical Hungaria asteroid, a large group that forms the innermost dense concentration of asteroids in the Solar System.[1][3] It is also a Mars-crossing asteroid, a member of the dynamically unstable group, located between the main belt and near-Earth populations, and crossing the orbit of Mars at 1.666 AU.[2]

The asteroid orbits the Sun in the inner main-belt at a distance of 1.64–2.13 AU once every 2 years and 7 months (945 days; semi-major axis of 1.88 AU). Its orbit has an eccentricity of 0.13 and an inclination of 28° with respect to the ecliptic.[2]

The body's observation arc begins with a precovery taken at Palomar Observatory in January 1954, nearly 20 years prior to its official discovery observation at Leoncito.[1]

Physical characteristics

In the Tholen classification, Stearns is a bright E-type asteroid.[2] while in the SMASS classification and Bus-DeMeo taxonomy, it is an Xe-subtype that transitions from the X-type to the E-type.[9]

Rotation period

Several rotational lightcurve of Stearns have been obtained from photometric observations since 1988.[6][7][8] Analysis of the best-rated lightcurve by Robert Stephens at the Center for Solar System Studies (U81) gave a rotation period of 93 hours with a brightness amplitude of 0.20 magnitude (U=2+). This makes the asteroid as close slow rotator.[3][a]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Stearns measures between 4.82 and 6.00 kilometers in diameter and its surface has an albedo between 0.443 and 0.65.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Hungaria family of 0.40, and derives a diameter of 5.28 kilometers based on an absolute magnitude of 13.0.[3]

Naming

This minor planet was named after Carl Leo Stearns (1892–1972), American astronomer at Wesleyan University and Van Vleck Observatory who measured a large number of stellar parallaxes.[1] The official naming citation was published by the Minor Planet Center on 1 November 1978 (M.P.C. 4548).[11] The lunar crater Stearns was also named in his honor.

Notes

  1. ^ a b Lightcurve plot of (2035) Stearns with a rotation period 93±1 hours with a brightness amplitude of 0.20 mag. Taken by Robert Stephens at the Center for Solar System Studies (CS3) in 2014. Quality code is 2+. Summary figures at the LCDB.

References

  1. ^ a b c d e f g h "2035 Stearns (1973 SC)". Minor Planet Center. Retrieved 25 May 2018.
  2. ^ a b c d e f g h i j "JPL Small-Body Database Browser: 2035 Stearns (1973 SC)" (2018-01-27 last obs.). Jet Propulsion Laboratory. Retrieved 25 May 2018.
  3. ^ a b c d e f g h i "LCDB Data for (2035) Stearns". Asteroid Lightcurve Database (LCDB). Retrieved 25 May 2018.
  4. ^ 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" (PDF). The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 25 May 2018.
  5. ^ a b c d Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data" (PDF). Astronomy and Astrophysics. 603: 8. arXiv:1705.10263. Bibcode:2017A&A...603A..55A. doi:10.1051/0004-6361/201629917. Retrieved 25 May 2018.
  6. ^ a b Warner, Brian D. (July 2011). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2010 December- 2011 March". The Minor Planet Bulletin. 38 (3): 142–149. Bibcode:2011MPBu...38..142W. ISSN 1052-8091. Retrieved 25 May 2018.
  7. ^ a b c Shevchenko, V. G.; Krugly, Yu. N.; Chiorny, V. G.; Belskaya, I. N.; Gaftonyuk, N. M. (August 2003). "Rotation and photometric properties of E-type asteroids". Planetary and Space Science. 51 (9–10): 525–532. Bibcode:2003P&SS...51..525S. doi:10.1016/S0032-0633(03)00076-X. Retrieved 25 May 2018.
  8. ^ a b Stephens, Robert D. (October 2014). "Asteroids Observed from CS3: 2014 April-June". The Minor Planet Bulletin. 41 (4): 226–230. Bibcode:2014MPBu...41..226S. ISSN 1052-8091. Retrieved 25 May 2018.
  9. ^ a b "Asteroid 2035 Stearns". Small Bodies Data Ferret. Retrieved 25 May 2018.
  10. ^ Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 25 May 2018.
  11. ^ Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

External links