Global Information1319 Disa information
| Discovery[1] | |
|---|---|
| Discovered by | C. Jackson |
| Discovery site | Johannesburg Obs. |
| Discovery date | 19 March 1934 |
| Designations | |
MPC designation | (1319) Disa |
| Pronunciation | /ˈdaɪsə/[2] |
Named after | Disa (orchid – flowering plant)[3] |
Alternative designations | 1934 FO · 1929 GE 1970 FM · A908 EA |
Minor planet category | main-belt · (outer)[4] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.20 yr (39,885 days) |
| Aphelion | 3.6026 AU |
| Perihelion | 2.3684 AU |
Semi-major axis | 2.9855 AU |
| Eccentricity | 0.2067 |
Orbital period (sidereal) | 5.16 yr (1,884 days) |
Mean anomaly | 41.069° |
Mean motion | 0° 11m 27.96s / day |
| Inclination | 2.8007° |
Longitude of ascending node | 256.10° |
Argument of perihelion | 316.25° |
| Physical characteristics | |
| Dimensions | 16.88±1.12 km[5] 24.00±0.37 km[6] 25.651±0.321 km[7] 25.894±0.180 km[8] 40.33 km (calculated)[4] |
Synodic rotation period | 7.080±0.003 h[9][a] 7.082±0.001 h[10] 7.0820±0.0077 h[11] |
Geometric albedo | 0.057 (assumed)[4] 0.0959±0.0034[8] 0.097±0.012[7] 0.116±0.004[6] 0.391±0.038[5] |
Spectral type | P[8] · C[4] |
Absolute magnitude (H) | 10.391±0.002 (R)[11] · 10.50[5] · 10.7[1][4] · 11.1[6][8] |
1319 Disa, provisional designation 1934 FO, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 19 March 1934, by English-born, South African astronomer Cyril Jackson at Johannesburg Observatory in South Africa.[12] It is named for the orchid Disa.[3]
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