1683 Castafiore, provisional designation 1950 SL, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 21 kilometers in diameter.

1683 Castafiore
Discovery [1]
Discovered byS. Arend
Discovery siteUccle Obs.
Discovery date19 September 1950
MPC designation(1683) Castafiore
Named after
Bianca Castafiore
(fictional character)[2]
1950 SL · 1936 PH
1949 HA · 1959 TH
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc80.55 yr (29,420 days)
Aphelion3.2165 AU
Perihelion2.2554 AU
2.7360 AU
4.53 yr (1,653 days)
0° 13m 4.08s / day
Physical characteristics
Dimensions18.42±0.79 km[4]
21.403±0.075 km[6]
25.44 km (calculated)[3]
13.931±0.003 h[a]
0.057 (assumed)[3]
11.6[4][6] · 11.66±0.46[7] · 11.7[1][3]

It was discovered on 19 September 1950, by Belgian astronomer Sylvain Arend at Royal Observatory of Belgium in Uccle, Belgium, and named after the character Bianca Castafiore from The Adventures of Tintin.[8]

Orbit and classificationEdit

The C-type asteroid orbits the Sun in the middle main-belt at a distance of 2.3–3.2 AU once every 4 years and 6 months (1,653 days). Its orbit has an eccentricity of 0.18 and an inclination of 12° with respect to the ecliptic.[1]

Physical characteristicsEdit

Rotation periodEdit

In September 2004, American astronomer Donald P. Pray obtained a rotational lightcurve of Castafiore from photometric observations. It gave a rotation period of 13.931 hours with a brightness variation of 0.66 magnitude (U=2+).[a]

Diameter and albedoEdit

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Castafiore measures 21.15 kilometers in diameter and its surface has an albedo of 0.160 (best result only),[5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057, and calculates a diameter of 25.44 kilometers with an absolute magnitude of 11.7.[3]


This minor planet was named for Bianca Castafiore, a fictional character in the comic-strip Adventures of Tintin .[2] On the occasion of his seventy-fifth birthday, the father of the fictional character, Georges Remi, better known under his pseudonym Hergé, was honoured by the minor planet 1652 Hergé.[9] The approved naming citation was published by the Minor Planet Center on 8 April 1982 (M.P.C. 6832).[10]


  1. ^ a b Pray (2011): rotation period of 13.931±0.003 hours with an amplitude in brightness of 0.66 in magnitude. Summary figure given at Light curve Database for (1683) Castafiore


  1. ^ a b c d "JPL Small-Body Database Browser: 1683 Castafiore (1950 SL)" (2017-02-25 last obs.). Jet Propulsion Laboratory. Retrieved 1 July 2017.
  2. ^ a b Schmadel, Lutz D. (2007). "(1683) Castafiore". Dictionary of Minor Planet Names – (1683) Castafiore. Springer Berlin Heidelberg. p. 134. doi:10.1007/978-3-540-29925-7_1684. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (1683) Castafiore". Asteroid Lightcurve Database (LCDB). Retrieved 22 December 2016.
  4. ^ a b c 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 22 December 2016.
  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 22 December 2016.
  6. ^ a b c 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. ^ 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 22 December 2016.
  8. ^ "1683 Castafiore (1950 SL)". Minor Planet Center. Retrieved 22 December 2016.
  9. ^ Schmadel, Lutz D. (2007). "(1652) Hergé". Dictionary of Minor Planet Names – (1652) Hergé. Springer Berlin Heidelberg. p. 131. doi:10.1007/978-3-540-29925-7_1653. ISBN 978-3-540-00238-3.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 22 December 2016.

External linksEdit