1128 Astrid
| Discovery | |
|---|---|
| Discovered by | E. Delporte |
| Discovery site | Uccle Obs. |
| Discovery date | 10 March 1929 |
| Designations | |
| (1128) Astrid | |
Named after | Astrid of Sweden (Queen consort of the Belgians) |
| 1929 EB · 1949 QF2 1954 UL3 · 1964 VW 1972 LM1 · A917 SQ A920 JA | |
| main-belt · (middle) · Astrid | |
| Adjectives | Astridian |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 97.07 yr (35,455 days) |
| Aphelion | 2.9171 AU |
| Perihelion | 2.6577 AU |
| 2.7874 AU | |
| Eccentricity | 0.0465 |
| 4.65 yr (1,700 days) | |
| 248.28° | |
| 0° 12m 42.48s / day | |
| Inclination | 1.0145° |
| 59.420° | |
| 234.37° | |
| Physical characteristics | |
| Dimensions | 33.28±9.67 km 34.60 km (derived) 34.69±2.1 km 41.851±0.278 km 41.97±0.72 km 44.784±0.912 km 45.03±10.37 km 52.48±0.40 km |
| 10.2±0.1 h 10.228±0.002 h 10.229±0.0031 h | |
| 0.031±0.004 0.04±0.02 0.0462±0.0181 0.053±0.002 0.06±0.03 0.0644 (derived) 0.0770±0.010 | |
| SMASS = C · C | |
| 10.588±0.002 (R) · 10.70 · 10.80 · 10.90 · 10.93 · 11.02±0.35 | |
1128 Astrid, provisional designation 1929 EB, is a carbonaceous Astridian asteroid from the central region of the asteroid belt. It is the parent body of the Astrid family and measures approximately 40 kilometers in diameter.
The asteroid was discovered by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle on 10 March 1929, and later named for Astrid of Sweden, Queen consort of the Belgians.