675 Ludmilla is a minor planet orbiting the Sun. It was named after Mikhail Glinka's opera Ruslan and Lyudmila.
![]() A three-dimensional model of 675 Ludmilla based on its light curve | |
Discovery | |
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Discovered by | Joel Hastings Metcalf |
Discovery site | Taunton, Massachusetts |
Discovery date | 30 August 1908 |
Designations | |
MPC designation | (675) Ludmilla |
Alternative designations | 1908 DU |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 98.67 yr (36039 d) |
Aphelion | 3.3308 AU (498.28 Gm) |
Perihelion | 2.2150 AU (331.36 Gm) |
Semi-major axis | 2.7729 AU (414.82 Gm) |
Eccentricity | 0.20120 |
Orbital period (sidereal) | 4.62 yr (1686.5 d) |
Mean anomaly | 98.9547° |
Mean motion | 0° 12m 48.456s / day |
Inclination | 9.7796° |
Longitude of ascending node | 263.200° |
Argument of perihelion | 152.391° |
Physical characteristics | |
Mean radius | 38 km[1] 33.83±0.47 km [2] |
Mass | (1.20 ± 0.24) × 1019 kg[2] |
Synodic rotation period | 7.717 h (0.3215 d) |
Absolute magnitude (H) | 7.91 |
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