1117 Reginita
1117 Reginita (prov. designation: 1927 KA) is a stony background asteroid from the inner regions of the asteroid belt. It was discovered on 24 May 1927, by Catalan astronomer Josep Comas i Solà at the Fabra Observatory in Barcelona, Spain, who named it after his niece. The bright S-type asteroid has a notably short rotation period of 2.9 hours and measures approximately 10 kilometers (6.2 miles) in diameter.
Shape model of Reginita from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | J. Comas Solà |
| Discovery site | Fabra Obs. |
| Discovery date | 24 May 1927 |
| Designations | |
MPC designation | (1117) Reginita |
Named after | Reginita (discoverer's niece) |
Alternative designations | 1927 KA · A904 TA |
Minor planet category |
|
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 112.47 yr (41,080 days) |
| Aphelion | 2.6934 AU |
| Perihelion | 1.8017 AU |
Semi-major axis | 2.2475 AU |
| Eccentricity | 0.1984 |
Orbital period (sidereal) | 3.37 yr (1,231 days) |
Mean anomaly | 245.71° |
Mean motion | 0° 17m 33s / day |
| Inclination | 4.3446° |
Longitude of ascending node | 147.14° |
| 151.05° | |
| Physical characteristics | |
| Dimensions | 9.82±2.35 km 10.193±0.250 km 10.29 km (taken) 10.292 km 11.22±0.35 km |
Synodic rotation period | 2.928±0.0134 h 2.94±0.010 h 2.9458±0.0002 h 2.946±0.001 h 2.9463±0.0006 h 2.9464±0.0005 h |
| 0.293±0.041 0.3516 0.3585±0.0785 0.36±0.13 | |
| S (Tholen) | |
| 11.7 | |
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