1040 Klumpkea
1040 Klumpkea, provisional designation 1925 BD, is a Tirela asteroid from the outer regions of the asteroid belt, approximately 23 kilometers (14 miles) in diameter. It was discovered on 20 January 1925, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in North Africa. This highly elongated asteroid is the largest member of the stony Tirela family – also known as the Klumpkea family – and has a longer than average rotation period of 59.2 hours. It was named after American astronomer Dorothea Klumpke.
Shape model of Klumpkea from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | B. Jekhovsky |
| Discovery site | Algiers Obs. |
| Discovery date | 20 January 1925 |
| Designations | |
MPC designation | (1040) Klumpkea |
Named after | Dorothea Klumpke (American astronomer) |
Alternative designations | 1925 BD · 1930 DC1 1936 BB |
Minor planet category | main-belt · (outer) Tirela |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 93.10 yr (34,005 d) |
| Aphelion | 3.7117 AU |
| Perihelion | 2.5142 AU |
Semi-major axis | 3.1129 AU |
| Eccentricity | 0.1923 |
Orbital period (sidereal) | 5.49 yr (2,006 d) |
Mean anomaly | 4.1328° |
Mean motion | 0° 10m 46.2s / day |
| Inclination | 16.688° |
Longitude of ascending node | 280.17° |
| 158.00° | |
| Physical characteristics | |
Mean diameter | 22.340±0.175 km 22.669±0.304 km 23.13±0.38 km 34.98±4.3 km |
Synodic rotation period | 59.2±0.1 h |
| 0.0630 0.237 0.2387 0.245 | |
| C (assumed) S (possible) | |
| 10.40 10.5 10.9 | |
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