Zähringia (minor planet designation: 421 Zähringia), provisional designation 1896 CZ, is a stony asteroid from the intermediate asteroid belt, approximately 14 kilometers in diameter. It was discovered on 7 September 1896, by astronomer Max Wolf at Heidelberg Observatory in Germany. The asteroid was named for the House of Zähringen, an medieval noble family that ruled parts of Swabia and Switzerland.[1][2]
Discovery [1] | |
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Discovered by | M. F. Wolf |
Discovery site | Heidelberg Obs. |
Discovery date | 7 September 1896 |
Designations | |
MPC designation | (421) Zähringia |
Named after | House of Zähringen [2] (medieval noble family)[2] |
Alternative designations | 1896 CZ · 1949 WJ A908 OB |
Minor planet category | main-belt · (middle) |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.92 yr (41,243 days) |
Aphelion | 3.2604 AU |
Perihelion | 1.8203 AU |
Semi-major axis | 2.5404 AU |
Eccentricity | 0.2834 |
Orbital period (sidereal) | 4.05 yr (1,479 days) |
Mean anomaly | 297.47° |
Mean motion | 0° 14m 36.24s / day |
Inclination | 7.7854° |
Longitude of ascending node | 187.40° |
Argument of perihelion | 209.23° |
Physical characteristics | |
Dimensions | 14.119±0.320 km[1] |
Synodic rotation period | 6.42 h (0.268 d)[1] |
Geometric albedo | 0.172±0.027[1] |
Spectral type | S (Tholen) [1] |
Absolute magnitude (H) | 11.78[1] |
The first occultation of a star by 421 Zähringia was observed in 2021.
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