Supriya Ghosh (Editor)

1019 Strackea

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Discovered by
K. Reinmuth

MPC designation
1019 Strackea

Minor planet category
main-belt · Hungaria

Absolute magnitude

Karl Wilhelm Reinmuth

Discovery date
3 March 1924

Alternative names
1924 QN

3 March 1924


Asteroid group
Hungaria family

Named after
Gustav Stracke (astronomer)

Discovery site
Landessternwarte Heidelberg-Königstuhl

1056 Azalea, 1002 Olbersia, 1001 Gaussia, 1111 Reinmuthia, 1207 Ostenia

1019 Strackea, provisional designation 1924 QN, is a stony Hungaria asteroid of the inner asteroid belt, about 8 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, on 3 March 1924.

Strackea is a stony S-type asteroid and a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits orbits the Sun at a distance of 1.8–2.0 AU once every 2 years and 8 months (965 days). Its orbit has an eccentricity of 0.07 and an inclination of 27° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Heidelberg in 1924.

The first valid rotational lightcurve of Strackea with a period of 4.05 hours and a brightness variation of 0.17 magnitude was obtained by French amateur astronomer Laurent Bernasconi in February 2006 (U=2). Since then, several well-defined lightcurves with a period between 4.044 and 4.052 hours and an amplitude of 0.15 to 0.25 magnitude were obtained by astronomers Brian Warner, Richard Schmidt, as well as by the group of astronomers Pierre Antonini, Raoul Behrend, Roberto Crippa and Federico Manzini (U=3/3-/3-/3/3).

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Strackea measures between 7.169 and 8.79 kilometers in diameter and its surface has an albedo between 0.206 and 0.39. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.2236 and a diameter of 8.37 kilometers with an absolute magnitude of 12.63.

This minor planet was named after German astronomer Gustav Stracke (1887–1943), who was in charge of the minor planet department at the Berlin-based Astronomical Calculation Institute, despite his wish that he not be honored in this fashion. Previously, the discoverer had circumvented Stracke's wish by accordingly naming a consecutively numbered sequence of asteroids, so that their first letters form the name "G. Stracke". These minor planets, in the number range from 1227 to 1234, were:

  • Geranium – Scabiosa – Tilia – Riceia – Auricula – Cortusa – Kobresia – Elyna
  • Naming citation was first published by Paul Herget in The Names of the Minor Planets in 1955 (H 97).


    1019 Strackea Wikipedia