Discovery | |
---|---|
Discovered by | August Kopff |
Discovery site | Heidelberg |
Discovery date | 18 January 1909 |
Designations | |
(677) Aaltje | |
1909 FR | |
Orbital characteristics [1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 109.68 yr (40062 d) |
Aphelion | 3.1092 AU (465.13 Gm) |
Perihelion | 2.8043 AU (419.52 Gm) |
2.9568 AU (442.33 Gm) | |
Eccentricity | 0.051565 |
5.08 yr (1857.1 d) | |
349.034° | |
0° 11m 37.86s / day | |
Inclination | 8.4812° |
272.799° | |
276.733° | |
Physical characteristics | |
Mean radius | 14.435±0.85 km |
16.608 h (0.6920 d) [1] | |
0.2794±0.037 [1] | |
9.6 [1] | |
677 Aaltje is a main-belt minor planet orbiting the Sun, discovered by August Kopff at Heidelberg on January 18, 1909. It was named after the Dutch singer Aaltje Noordewier-Reddingius.
This object has a geometric albedo of 0.2794. Photometric observations during 2008 showed a rotation period of 16.6076 ± 0.0006 hours and a brightness variation of 0.30 ± 0.02 in magnitude. [2]
677 Aaltje is orbiting within the 7/3 Kirkwood gap. This means it has a 7:3 orbital resonance with Jupiter, completing seven orbits for every three orbits of the planet. For smaller objects, this would typically lead to orbital instability, causing it to shift to a different orbital period. However, 677 Aaltje is too large for its orbit to have been moved by more than about 0.01 AU over the lifetime of the Solar System. What is more likely is that orbital interactions with the dwarf planet Ceres may have shifted it to the present-day orbit—the orbit of 677 Aaltje leads it into relatively close encounters with Ceres. [3]
Thisbe, minor planet designation 88 Thisbe, is the 13th largest main-belt asteroid. It was discovered by C. H. F. Peters on June 15, 1866, and named after Thisbe, heroine of a Roman fable. This asteroid is orbiting the Sun at a distance of 2.768 AU with a period of 4.60 years and an orbital eccentricity (ovalness) of 0.165. The orbital plane is inclined at an angle of 5.219° to the ecliptic.
Minerva is a large trinary main-belt asteroid. It is a C-type asteroid, meaning that it has a dark surface and possibly a primitive carbonaceous composition. It was discovered by J. C. Watson on 24 August 1867, and named after Minerva, the Roman equivalent of Athena, goddess of wisdom. An occultation of a star by Minerva was observed in France, Spain and the United States on 22 November 1982. An occultation diameter of ~170 km was measured from the observations. Since then two more occultations have been observed, which give an estimated mean diameter of ~150 km for diameter.
Dike is a quite large and dark main-belt asteroid. Dike was discovered by Alphonse Borrelly on May 28, 1868. It was his first asteroid discovery. This object is named after Dike, the Greek goddess of moral justice. Among the first hundred numbered minor planets, 99 Dike was considered anomalously faint for over a century. However, this was later found to be untrue.
Dione is a large main-belt asteroid. It probably has a composition similar to 1 Ceres. It was discovered by J. C. Watson on October 10, 1868, and named after Dione, a Titaness in Greek mythology who was sometimes said to have been the mother of Aphrodite, the Greek goddess of love and beauty. It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1 mean-motion resonance with Jupiter. The orbital period for this object is 5.66 years and it has an eccentricity of 0.17.
Eucharis is a large, slowly rotating main-belt asteroid that was discovered by French astronomer Pablo Cottenot on February 2, 1878, from Marseille Observatory. It was his only asteroid discovery. This object was named after Eucharis, a nymph from the 17th-century novel Les Aventures de Télémaque.
Vera is a large Main belt asteroid. It was discovered by N. R. Pogson on February 6, 1885, in Madras, and was named at the suggestion of his wife. The asteroid is orbiting the Sun at a distance of 3.11 AU with a period of 5.47 years and an eccentricity (ovalness) of 0.19. The orbital plane is tilted at an angle of 5.16° to the plane of the ecliptic. In 1890, Daniel Kirkwood noted that this asteroid shares similar orbital elements with 86 Semele and 106 Dione.
Lameia is a typical main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on 5 June 1885 in Vienna and was named after the Lamia, a lover of Zeus in Ancient Greek mythology. 248 Lameia is orbiting the Sun with a period of 3.88 years and a low eccentricity (ovalness) of 0.067. The semimajor axis of 2.47 AU is slightly inward from the 3:1 Kirkwood Gap. Its orbital plane is inclined by 4° to the plane of the ecliptic.
Oppavia is a sizeable Main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on 31 March 1886 in Vienna and was named after Opava, a town in the Czech Republic, then part of Austria-Hungary, where Palisa was born. It is orbiting the Sun at a distance of 2.75 AU with an orbital eccentricity (ovalness) of 0.077 and a period of 4.55 yr. The orbital plane is inclined by an angle of 9.47° to the plane of the ecliptic.
Anahita is a stony S-type Main belt asteroid. It was discovered by C. H. F. Peters on October 8, 1887, in Clinton, New York, and was named after the Avestan divinity Aredvi Sura Anahita.
Ottilia is a large main-belt asteroid. It was discovered by Max Wolf on March 16, 1895, in Heidelberg. It is named after the Germanic folkloric character Ottilia.
Hungaria is a relatively small asteroid orbiting in the inner asteroid belt. It is an E-type (high-albedo) asteroid. It is the namesake of the Hungaria asteroids, which orbit the Sun on the inside of the 1:4 Kirkwood gap, standing out of the core of the asteroid belt.
1578 Kirkwood, provisional designation 1951 AT, is a Hilda asteroid from the outermost regions of the asteroid belt, approximately 52 kilometers in diameter. It was discovered on 10 January 1951, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after American astronomer Daniel Kirkwood.
695 Bella is a minor planet orbiting the Sun.
780 Armenia is a minor planet in the asteroid belt orbiting the Sun. It is named after the Kingdom of Armenia, now Armenia. This object is orbiting at a distance of 3.11 AU with an eccentricity of 0.097 and a period of 5.50 yr. The orbital plane is inclined at an angle of 19.1° to the plane of rotation. This asteroid spans a girth of ~94 km. The long rotation period of this asteroid necessitated light curve data from more than one latitude. The overlapping data provided a solution with a period of 19.891±0.002 h and a brightness amplitude of 0.18±0.03 in magnitude.
787 Moskva is a minor planet orbiting the Sun. It is a dynamic member of the Maria asteroid family orbiting near the 3:1 Kirkwood gap. This is an S-type (stony) asteroid spanning 27 km. The surface mineralogy is consistent with mesosiderite silicates.
975 Perseverantia is a minor planet orbiting the Sun that was discovered by Austrian astronomer Johann Palisa on 27 March 1922.
7638 Gladman, provisional designation 1984 UX, is a stony background asteroid from the central region of the asteroid belt, approximately 5.8 kilometers in diameter. It was discovered on 26 October 1984, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona. The S-type asteroid has a rotation period of 17.3 hours. It was named after Canadian astronomer Brett J. Gladman.
4608 Wodehouse, provisional designation 1988 BW3, is a background asteroid and suspected trojan of Ceres from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 19 January 1988, by Belgian astronomer Henri Debehogne at ESO's La Silla Observatory in northern Chile. The asteroid was named after English writer P. G. Wodehouse.
5751 Zao, provisional designation 1992 AC, is an Amor asteroid discovered by Japanese astronomer M. Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory on 5 January 1992
3789 Zhongguo, provisional designation 1928 UF, is a resonant asteroid from outermost region of the asteroid belt, approximately 14 kilometers in diameter. It was discovered in 1928 by Chinese astronomer Zhang Yuzhe at the Yerkes Observatory in Williams Bay, Wisconsin, in the United States. Originally named "China", the asteroid became lost and its name was transferred to another asteroid. After its re-discovery in 1986, it was named Zhongguo, which is the Chinese word for "China". The T/Xk-type asteroid is the namesake of the resonant Zhongguo group, located in the asteroid belt's Hecuba gap. It has a short rotation period of 3.8 hours.