1604 Tombaugh
Shape model of Tombaugh from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | C. O. Lampland |
| Discovery site | Lowell Obs. |
| Discovery date | 24 March 1931 |
| Designations | |
| (1604) Tombaugh | |
Named after | Clyde Tombaugh (astronomer) |
| 1931 FH · 1930 DX 1933 SA1 · 1936 FA 1937 JH · 1941 CF 1943 OE · 1948 ME 1949 ST1 · A920 EC | |
| main-belt · Eos | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 96.51 yr (35,252 days) |
| Aphelion | 3.3309 AU |
| Perihelion | 2.7161 AU |
| 3.0235 AU | |
| Eccentricity | 0.1017 |
| 5.26 yr (1,920 days) | |
| 359.39° | |
| 0° 11m 15s / day | |
| Inclination | 9.3941° |
| 309.10° | |
| 38.199° | |
| Physical characteristics | |
| Dimensions | 28.78±0.53 km 32.25 km (derived) 32.33±2.2 km (IRAS:3) |
| 6.15 h (dated) 7.04 h (dated) 7.047±0.004 h 7.056±0.001 h 8.2 h (dated) | |
| 0.0933 (derived) 0.1038±0.016 (IRAS:3) 0.138±0.006 | |
| B–V = 0.751 U–B = 0.373 XSCU (Tholen) · Xc (SMASS) · X | |
| 10.4 · 10.53 · 10.65 · 10.93±0.15 | |
1604 Tombaugh, provisional designation 1931 FH, is a rare-type Eos asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 24 March 1931, by American astronomer Carl Otto Lampland at Lowell Observatory in Flagstaff, Arizona, in the United States. It was named after the discoverer of Pluto, Clyde Tombaugh.