شولهوف ۲۳۸۴

از ویکی‌پدیا، دانشنامهٔ آزاد
(تغییرمسیر از سیارک ۲۳۸۴)
پرش به ناوبری پرش به جستجو
فارسیEnglish
سیارک ۲۳۸۴
اکتشاف
تاریخ کشف همارس ۲, ۱۹۴۳
مبدا مه ۱۴, ۲۰۰۸
خروج از مرکز ۰.۱۲۲۱۲۲۶
آنومالی متوسط ۱۳۵.۲۲۵۵۸
زاویه انحراف ۱۳.۵۳۷۶۲
اوج ۲.۹۲۷۸۴۲۰
حضیض ۲.۲۹۰۵۵۷۴
تناوب مداری ۱۵۳۹.۴۲۸۰۸۸۸

سیارک ۲۳۸۴ (به انگلیسی: 2384 Schulhof، نامگذاری:1943EC1) دو هزار و سیصد و هشتاد و چهارمین سیارک کشف شده‌است[۱] که در ۲ مارس ۱۹۴۳ و در نیس کشف شد.[۲]

قدر مطلق سیارک برابر ۱۲٫۲۰ است.[۳]

منابع[ویرایش]

  1. طبق اینجا شماره سیارک معرف شماره کشف شدن آنهاست.
  2. «فهرست سیارک‌های شماره‌دار». دانشگاه هاروارد. دریافت‌شده در ۲۸ سپتامبر ۲۰۰۹.
  3. «فهرست داده‌های سیارک‌ها». ناسا. بایگانی‌شده از روی نسخه اصلی در ۱۳ مه ۲۰۱۹. دریافت‌شده در ۱۴ مه ۲۰۱۹.

پیوند به بیرون[ویرایش]


2384 Schulhof
2384Schulhof (Lightcurve Inversion).png
Lightcurve-based 3D-model of Schulhof
Discovery [1]
Discovered byM. Laugier
Discovery siteNice Obs.
Discovery date2 March 1943
Designations
MPC designation(2384) Schulhof
Named after
Lipót Schulhof[2]
(Hungarian astronomer)
1943 EC1 · 1943 GV
1960 FE · 1962 WL1
1970 RP · 1981 FF
A909 BF
main-belt[1][3] · (middle)
Schulhof[4]
Orbital characteristics[3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc108.97 yr (39,803 d)
Aphelion2.9231 AU
Perihelion2.2989 AU
2.6110 AU
Eccentricity0.1195
4.22 yr (1,541 d)
256.37°
0° 14m 0.96s / day
Inclination13.530°
7.9084°
205.72°
Physical characteristics
Mean diameter
11.485±0.174 km[5]
11.721±0.138 km[6]
12.66 km (calculated)[7]
3.294±0.006 h[8]
0.21 (assumed)[7]
0.2733±0.0217[6]
0.280±0.045[5]
S (assumed)[7]
11.7[6]
11.8[3][7]

2384 Schulhof, provisional designation 1943 EC1, is an asteroid and namesake of a small asteroid family in the Eunomian region of the intermediate asteroid belt, approximately 12 kilometers (7.5 miles) in diameter. It was discovered on 2 March 1943, by French astronomer Marguerite Laugier at Nice Observatory in southeastern France.[1] The asteroid was later named after Hungarian astronomer Lipót Schulhof.[2]

Orbit and classification

Schulhof is the principal body and namesake of the Schulhof family, a small asteroid family within the region of the Eunomia family of the main-belt.[4][9] It orbits the Sun in the central asteroid belt at a distance of 2.3–2.9 AU once every 4 years and 3 months (1,541 days). Its orbit has an eccentricity of 0.12 and an inclination of 14° with respect to the ecliptic.[3]

It was first observed as A909 BF at Heidelberg Observatory in 1909. The body's observation arc begins with its official discovery observation at Nice in 1943.[1]

Naming

This minor planet was named in memory of Austrian–Hungarian astronomer Lipót Schulhof (1847–1921), observer of asteroids and comets, discoverer of the main-belt asteroid 147 Protogeneia, and awardee of the Lalande Prize.[2] The official naming citation was published by the Minor Planet Center on 17 February 1984, based on a suggestion by Brian G. Marsden (M.P.C. 8541).[10]

Physical characteristics

Schulhof is an assumed S-type asteroid.[7]

Rotation period

In April 2002, a rotational lightcurve of Schulhof was obtained from photometric observations at the U.S. Oakley Observatory. It gave a well-defined rotation period of 3.294±0.006 hours with a brightness variation of 0.43 magnitude (U=3).[8]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Schulhof measures 11.5 and 11.7 kilometers in diameter and its surface has an albedo of 0.27 and 0.28, respectively.[5][6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived form 15 Eunomia, the family's largest member and namesake – and calculates a diameter of 12.7 kilometers with an absolute magnitude of 11.8.[7]

References

  1. ^ a b c d "2384 Schulhof (1943 EC1)". Minor Planet Center. Retrieved 9 August 2018.
  2. ^ a b c Schmadel, Lutz D. (2007). "(2384) Schulhof". Dictionary of Minor Planet Names – (2384) Schulhof. Springer Berlin Heidelberg. p. 194. doi:10.1007/978-3-540-29925-7_2385. ISBN 978-3-540-00238-3.
  3. ^ a b c d "JPL Small-Body Database Browser: 2384 Schulhof (1943 EC1)" (2018-01-20 last obs.). Jet Propulsion Laboratory. Retrieved 9 August 2018.
  4. ^ a b "Asteroid 2384 Schulhof". Small Bodies Data Ferret. Retrieved 9 August 2018.
  5. ^ a b c 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. Retrieved 7 December 2016.
  6. ^ 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.
  7. ^ a b c d e f "LCDB Data for (2384) Schulhof". Asteroid Lightcurve Database (LCDB). Retrieved 5 July 2016.
  8. ^ a b Ditteon, R.; Bixby, A. R.; Sarros, A. M.; Waters, C. T. (December 2002). "Rotation Periods and Lightcurves of 1858 Lobachevskij, 2384 Schulhof and (5515) 1989 EL1". The Minor Planet Bulletin. 29: 69. Bibcode:2002MPBu...29...69D. Retrieved 5 July 2016.
  9. ^ 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.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 July 2016.

External links