2384 Schulhof

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2384 Schulhof
2384Schulhof (Lightcurve Inversion).png
Lightcurve-based 3D-model of Schulhof
Discovery [1]
Discovered by M. Laugier
Discovery site Nice Obs.
Discovery date 2 March 1943
MPC designation (2384) Schulhof
Named after
Lipót Schulhof
1943 EC1 · 1943 GV
1960 FE · 1962 WL1
1970 RP · 1981 FF
A909 BF
main-belt · Eunomia[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 107.98 yr (39,441 days)
Aphelion 2.9233 AU
Perihelion 2.2994 AU
2.6114 AU
Eccentricity 0.1195
4.22 yr (1,541 days)
0° 14m 0.96s / day
Inclination 13.531°
Physical characteristics
Dimensions 11.485±0.174[4]
11.721±0.138 km[5]
12.66 km (calculated)[3]
3.294±0.006 h[6]
0.21 (assumed)[3]
11.7[5] · 11.8[1][3]

2384 Schulhof, provisional designation 1943 EC1, is a stony Eunomia asteroid from the middle region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 2 March 1943, by French astronomer Marguerite Laugier at Nice Observatory in southeastern France.[7] The asteroid was later named after astronomre Lipót Schulhof.[2]

Orbit and classification[edit]

Schulhof is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun in the central main-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.[1]

It was first identified as A909 BF at Heidelberg Observatory in 1909. The body's observation arc begins with its official discovery observation at Nice in 1943.[7]

Physical characteristics[edit]

Schulhof has been characterized as a common S-type asteroid.[3]

Rotation period[edit]

In April 2002, a rotational lightcurve of Schulhof was obtained from photometeric 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).[6]

Diameter and albedo[edit]

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.[4][5] 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.[3]


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).[8]


  1. ^ a b c d "JPL Small-Body Database Browser: 2384 Schulhof (1943 EC1)" (2017-01-23 last obs.). Jet Propulsion Laboratory. Retrieved 13 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2384) Schulhof. Springer Berlin Heidelberg. p. 194. ISBN 978-3-540-00238-3. Retrieved 5 July 2016. 
  3. ^ a b c d e f g "LCDB Data for (2384) Schulhof". Asteroid Lightcurve Database (LCDB). Retrieved 5 July 2016. 
  4. ^ 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. Bibcode:2014ApJ...791..121M. arXiv:1406.6645Freely accessible. doi:10.1088/0004-637X/791/2/121. Retrieved 7 December 2016. 
  5. ^ 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" (PDF). The Astrophysical Journal. 741 (2): 25. Bibcode:2011ApJ...741...90M. arXiv:1109.6407Freely accessible. doi:10.1088/0004-637X/741/2/90. Retrieved 5 July 2016. 
  6. ^ 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. 
  7. ^ a b "2384 Schulhof (1943 EC1)". Minor Planet Center. Retrieved 5 July 2016. 
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 July 2016. 

External links[edit]