_Schulhof.png) Shape model of Schulhof from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | M. Laugier |
| Discovery site | Nice Obs. |
| Discovery date | 2 March 1943 |
| Designations | |
| MPC designation | (2384) Schulhof |
| Named after | Lipót Schulhof (Hungarian astronomer) |
| Alternative designations | 1943 EC1 · 1943 GV 1960 FE · 1962 WL1 1970 RP · 1981 FF A909 BF |
| Minor planet category | main-belt · (middle) Schulhof |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.97 yr (39,803 d) |
| Aphelion | 2.9231 AU |
| Perihelion | 2.2989 AU |
| Semi-major axis | 2.6110 AU |
| Eccentricity | 0.1195 |
| Orbital period (sidereal) | 4.22 yr (1,541 d) |
| Mean anomaly | 256.37° |
| Mean motion | 0° 14 0.96 / day |
| Inclination | 13.530° |
| Longitude of ascending node | 7.9084° |
| Argument of perihelion | 205.72° |
| Physical characteristics | |
| Mean diameter | 11.485±0.174 km 11.721±0.138 km 12.66 km (calculated) |
| Synodic rotation period | 3.294±0.006 h |
| Geometric albedo | 0.21 (assumed) 0.2733±0.0217 0.280±0.045 |
| Spectral type | S (assumed) |
| Absolute magnitude (H) | 11.7 11.8 |
2384 Schulhof (prov. designation: 1943 EC1) is a mid-sized asteroid and the namesake of the Schulhof family, located in the Eunomian region of the intermediate asteroid belt. It was discovered on 2 March 1943, by French astronomer Marguerite Laugier at Nice Observatory in southeastern France. The asteroid was later named after Hungarian astronomer Lipót Schulhof. The presumed S-type asteroid has a short rotation period of 3.3 hours and measures approximately 12 kilometers (7.5 miles) in diameter.
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. 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. 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.
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. 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).
Physical characteristics
Schulhof is an assumed S-type asteroid.
Rotation period
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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).
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. 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.
References
- ^ "2384 Schulhof (1943 EC1)". Minor Planet Center. Retrieved 9 August 2018.
- ^ Schmadel, Lutz D. (2007). "(2384) Schulhof". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 194. doi:10.1007/978-3-540-29925-7_2385. ISBN 978-3-540-00238-3.
- ^ "JPL Small-Body Database Browser: 2384 Schulhof (1943 EC1)" (2018-01-20 last obs.). Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 9 August 2018.
- ^ "Asteroid 2384 Schulhof". Small Bodies Data Ferret. Retrieved 9 August 2018.
- ^ 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.
- ^ 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.
- ^ "LCDB Data for (2384) Schulhof". Asteroid Lightcurve Database (LCDB). Retrieved 5 July 2016.
- ^ 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" (PDF). Minor Planet Bulletin. 29 (1): 69. Bibcode:2002MPBu...29...69D. Archived from the original (PDF) on 4 October 2021. Retrieved 18 March 2020.
- 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.
- "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 July 2016.
External links
- Lightcurve Database Query (LCDB), at www.minorplanet.info
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 2384 Schulhof at AstDyS-2, Asteroids—Dynamic Site
- 2384 Schulhof at the JPL Small-Body Database
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