Discovery | |
---|---|
Discovered by | Robert Luther |
Discovery date | September 15, 1857 |
Designations | |
(47) Aglaja | |
Pronunciation | /əˈɡleɪ.ə/ [1] |
Named after | Aglaea |
Aglaia [2] | |
Main belt | |
Adjectives | Aglajan |
Orbital characteristics [3] | |
Epoch December 31, 2006 ( JD 2454100.5) | |
Aphelion | 488.740 Gm (3.267 AU) |
Perihelion | 372.222 Gm (2.488 AU) |
430.481 Gm (2.878 AU) | |
Eccentricity | 0.135 |
1,782.960 d (4.88 a) | |
225.007° | |
Inclination | 4.985° |
3.244° | |
314.589° | |
Physical characteristics | |
Dimensions | 141.90 ± 8.72 km [4] |
Mass | (3.25±1.68)×1018 kg [4] |
Mean
density | 2.17 ± 1.19 g/cm3 [4] |
13.175 [5] h | |
0.080 [6] | |
C (
Tholen) B ( SMASSII) [7] | |
7.84 | |
47 Aglaja /əˈɡleɪ.ə/ is a large, dark main belt asteroid. It was discovered by Robert Luther on 15 September 1857 from Düsseldorf. [8] The name was chosen by the Philosophical Faculty of the University of Bonn and refers to Aglaea, one of the Charites in Greek mythology. [9] It was rendered Aglaia in English sources into the early 20th century, as 'i' and 'j' are equivalent in Latin names and in the Latin rendering of Greek names. [2]
Based upon its spectrum, 47 Aglaja is listed as a C-type asteroid under the Tholen classification taxonomy, indicating a carbonaceous composition. The SMASS classification system rates it as a rare B-type asteroid. There is a broad absorption feature at 1 μm that is associated with the presence of magnetite and is what gives the asteroid its blue tint. [7]
On 16 September 1984, the star SAO 146599 was occulted by 47 Aglaja. This event was observed from 13 sites in the continental United States, allowing a cross-sectional profile to be determined. Based upon this study, the asteroid has a diameter of 136.4 ± 1.2 km. The geometric albedo calculated at the time of the occultation was 0.071 ± 0.002. [10]
2012 photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico gave a light curve with a period of 13.175 ± 0.002 hours and a brightness variation of 0.09 ± 0.01 in magnitude. This result is in agreement with previous studies. [5]
Discovery | |
---|---|
Discovered by | Robert Luther |
Discovery date | September 15, 1857 |
Designations | |
(47) Aglaja | |
Pronunciation | /əˈɡleɪ.ə/ [1] |
Named after | Aglaea |
Aglaia [2] | |
Main belt | |
Adjectives | Aglajan |
Orbital characteristics [3] | |
Epoch December 31, 2006 ( JD 2454100.5) | |
Aphelion | 488.740 Gm (3.267 AU) |
Perihelion | 372.222 Gm (2.488 AU) |
430.481 Gm (2.878 AU) | |
Eccentricity | 0.135 |
1,782.960 d (4.88 a) | |
225.007° | |
Inclination | 4.985° |
3.244° | |
314.589° | |
Physical characteristics | |
Dimensions | 141.90 ± 8.72 km [4] |
Mass | (3.25±1.68)×1018 kg [4] |
Mean
density | 2.17 ± 1.19 g/cm3 [4] |
13.175 [5] h | |
0.080 [6] | |
C (
Tholen) B ( SMASSII) [7] | |
7.84 | |
47 Aglaja /əˈɡleɪ.ə/ is a large, dark main belt asteroid. It was discovered by Robert Luther on 15 September 1857 from Düsseldorf. [8] The name was chosen by the Philosophical Faculty of the University of Bonn and refers to Aglaea, one of the Charites in Greek mythology. [9] It was rendered Aglaia in English sources into the early 20th century, as 'i' and 'j' are equivalent in Latin names and in the Latin rendering of Greek names. [2]
Based upon its spectrum, 47 Aglaja is listed as a C-type asteroid under the Tholen classification taxonomy, indicating a carbonaceous composition. The SMASS classification system rates it as a rare B-type asteroid. There is a broad absorption feature at 1 μm that is associated with the presence of magnetite and is what gives the asteroid its blue tint. [7]
On 16 September 1984, the star SAO 146599 was occulted by 47 Aglaja. This event was observed from 13 sites in the continental United States, allowing a cross-sectional profile to be determined. Based upon this study, the asteroid has a diameter of 136.4 ± 1.2 km. The geometric albedo calculated at the time of the occultation was 0.071 ± 0.002. [10]
2012 photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico gave a light curve with a period of 13.175 ± 0.002 hours and a brightness variation of 0.09 ± 0.01 in magnitude. This result is in agreement with previous studies. [5]