1128 Astrid

1128 Astrid
Discovery[1]
Discovered byE. Delporte
Discovery siteUccle Obs.
Discovery date10 March 1929
Designations
(1128) Astrid
Named after
Astrid of Sweden
(Queen consort of the Belgians)[2]
1929 EB · 1949 QF2
1954 UL3 · 1964 VW
1972 LM1 · A917 SQ
A920 JA
main-belt · (middle) · Astrid[3]
AdjectivesAstridian
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc97.07 yr (35,455 days)
Aphelion2.9171 AU
Perihelion2.6577 AU
2.7874 AU
Eccentricity0.0465
4.65 yr (1,700 days)
248.28°
0° 12m 42.48s / day
Inclination1.0145°
59.420°
234.37°
Physical characteristics
Dimensions33.28±9.67 km[4]
34.60 km (derived)[5]
34.69±2.1 km[6]
41.851±0.278 km[7]
41.97±0.72 km[8]
44.784±0.912 km[9]
45.03±10.37 km[10]
52.48±0.40 km[11]
10.2±0.1 h[12]
10.228±0.002 h[12]
10.229±0.0031 h[13]
0.031±0.004[11]
0.04±0.02[10]
0.0462±0.0181[9]
0.053±0.002[8]
0.06±0.03[4]
0.0644 (derived)[5]
0.0770±0.010[6]
SMASS = C[1] · C[5]
10.588±0.002 (R)[13] · 10.70[6][8][9] · 10.80[11] · 10.90[1][4][5] · 10.93[10] · 11.02±0.35[14]

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.[2][15]

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