Global Information1424 Sundmania information
 Shape model of Sundmania from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Obs. |
| Discovery date | 9 January 1937 |
| Designations | |
MPC designation | (1424) Sundmania |
Named after | Karl F. Sundman[2][3] (Finnish mathematician) |
Alternative designations | 1937 AJ · 1929 SS 1929 UB · 1931 AD 1938 FP · A918 WA |
Minor planet category | main-belt · (outer)[4] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 98.53 yr (35,989 days) |
| Aphelion | 3.3831 AU |
| Perihelion | 2.9966 AU |
Semi-major axis | 3.1899 AU |
| Eccentricity | 0.0606 |
Orbital period (sidereal) | 5.70 yr (2,081 days) |
Mean anomaly | 196.29° |
Mean motion | 0° 10m 22.8s / day |
| Inclination | 9.1784° |
Longitude of ascending node | 42.988° |
Argument of perihelion | 301.53° |
| Physical characteristics | |
Mean diameter | 64.691±0.254 km[5] 68.169±1.767 km[6] 70.56 km (derived)[4] 70.75±2.5 km[7] 73.40±0.86 km[8] 74.46±16.37 km[9] 80.20±28.15 km[10] 84.67±0.64 km[11] |
Synodic rotation period | 93.73±0.03 h[12] |
Pole ecliptic latitude |
|
Geometric albedo | 0.030±0.004[11] 0.03±0.01[9] 0.03±0.04[10] 0.0426 (derived)[4] 0.052±0.001[8] 0.0559±0.004[7] 0.0602±0.0136[6] |
Spectral type | SMASS = X[1] · P[6] · C[4] |
Absolute magnitude (H) | 9.50[6][7][8] · 9.80[4][11] · 9.90[1][9] · 10.03±0.38[14] · 10.07[10] |
1424 Sundmania (prov. designation: 1937 AJ) is a large asteroid and rather slow rotator from the background population of the outer regions of the asteroid belt. It was discovered on 9 January 1937, by astronomer Yrjö Väisälä at the Turku Observatory in southwest Finland.[15] The dark X-type asteroid has a notably long rotation period of 93.7 hours and measures approximately 70 kilometers (43 miles) in diameter. It was named after Finnish astronomer and mathematician Karl F. Sundman.[2]
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