1104 Syringa of flowering plants, Syringa (philadelphus; lilac). It belongs to the Oleaceae family. The "Syringa" most common member species is the Syringa vulgaris (common lilac). The official naming citation was mentioned in "The Names of the Minor Planets" by Paul Herget in 1955 (). Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between and . This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants "(also see list of
1104 Syringa of 0.34 and an inclination of 6° with respect to the ecliptic. For a main-belt asteroid, it has a rather high eccentricity. The body's observation arc begins at Heidelberg on 1 January 1929, three weeks after its official discovery observation. In the SMASS classification, "Syringa" is a Xk-subtype that transitions between the X- and the dark and uncommon K-type asteroids. It has also been characterized as an X-type by Pan-STARRS photometric survey, and as a primitive P-type asteroid by the Wide-field Infrared Survey Explorer (WISE). In February 2006, a rotational lightcurve of "Syringa" was obtained from photometric observations at the