Discovery[1] | |
---|---|
Discovered by | K. Reinmuth |
Discovery site | Heidelberg Obs. |
Discovery date | 7 September 1934 |
Designations | |
(1669) Dagmar | |
Named after | Generic name (common German name)[2] |
1934 RS · 1943 GE 1950 PX · 1953 AD 1957 WA · 1959 CV 1962 RH | |
main-belt · Themis[3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 82.66 yr (30,190 days) |
Aphelion | 3.4870 AU |
Perihelion | 2.7920 AU |
3.1395 AU | |
Eccentricity | 0.1107 |
5.56 yr (2,032 days) | |
126.58° | |
0° 10m 37.92s / day | |
Inclination | 0.9409° |
18.979° | |
178.21° | |
Physical characteristics | |
Dimensions | 35.78±2.4 km (IRAS:17)[4] 42.377±0.188 km[5] 42.99±2.86 km[6] 43.00±0.77 km[7] 45.194±0.620 km[8] |
Mass | (3.98±0.80)×1016 kg[6] |
Mean density | 0.95±0.27 g/cm3[6] |
12 h[9] | |
0.0354±0.0061[8] 0.039±0.007[5][7] 0.0565±0.008 (IRAS:17)[4] | |
Tholen = G:[1] · G:[3] B–V = 0.730[1] U–B = 0.460[1] | |
10.91±0.18[10] · 10.97 (IRAS:17)[1][3][4] · 10.97[7][8] | |
1669 Dagmar, provisional designation 1934 RS, is a rare-type Themistian asteroid from the outer region of the asteroid belt, approximately 42 kilometers in diameter. It was discovered on 7 September 1934, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named after a common German feminine name.[2][11]
jpldata
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