1694 Kaiser
1694 Kaiser (prov. designation: 1934 SB) is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 29 September 1934, by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. It is named for Dutch astronomer Frederik Kaiser.
Shape model of Kaiser from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 29 September 1934 |
| Designations | |
MPC designation | (1694) Kaiser |
Named after | Frederik Kaiser (astronomer) |
Alternative designations | 1934 SB · 1960 SD |
Minor planet category | main-belt · (inner) |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.60 yr (30,168 days) |
| Aphelion | 3.0137 AU |
| Perihelion | 1.7759 AU |
Semi-major axis | 2.3948 AU |
| Eccentricity | 0.2584 |
Orbital period (sidereal) | 3.71 yr (1,354 days) |
Mean anomaly | 125.25° |
Mean motion | 0° 15m 57.24s / day |
| Inclination | 11.103° |
Longitude of ascending node | 13.421° |
| 356.15° | |
| Physical characteristics | |
| Dimensions | 13.84±1.27 km 15.678±0.175 km 28.42 km (calculated) |
Synodic rotation period | 9 h 13.02±0.01 h 13.23±0.02 h |
| 0.057 (assumed) 0.1659±0.0088 0.166±0.009 0.241±0.046 | |
| B–V = 0.735 U–B = 0.415 Tholen = GC · C | |
| 11.46 | |
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