Discovery [1] | |
---|---|
Discovered by | H. van Gent |
Discovery site | Johannesburg Obs. |
Discovery date | 9 September 1934 |
Designations | |
(1336) Zeelandia | |
Named after |
Zeeland
[2] (a province of the Netherlands) |
1934 RW · 1929 QE 1930 XC · 1935 YF 1939 RP · A906 YO | |
main-belt · (
outer) Koronis [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.01 yr (40,913 days) |
Aphelion | 3.0348 AU |
Perihelion | 2.6654 AU |
2.8501 AU | |
Eccentricity | 0.0648 |
4.81 yr (1,757 days) | |
117.20 ° | |
0° 12m 17.28s / day | |
Inclination | 3.1972° |
97.420° | |
220.01° | |
Physical characteristics | |
Dimensions | 19.18±0.51 km
[5] 20.99±2.1 km [3] [6] 21.441±0.132 km [7] 23.056±0.108 km [8] 23.63±3.31 km [9] |
15.602
h
[10] 15.624±0.001 h [11] | |
0.153±0.280
[9] 0.1829±0.0228 [8] 0.2183±0.052 [3] [6] 0.232±0.045 [7] 0.273±0.017 [5] | |
B–V = 0.810
[1] U–B = 0.366 [1] Tholen = S [1] SMASS = S [1] [3] | |
10.66 [1] [3] [5] [6] [8] · 10.71±0.58 [12] · 10.79 [9] · 10.94±0.02 [10] | |
1336 Zeelandia, provisional designation 1934 RW, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. [13] The asteroid was named for the Dutch province of Zeeland. [2]
Zeelandia belongs to the Koronis family ( 605), [3] [4] a very large asteroid family of 6,000 known members with stony composition and nearly co-planar ecliptical orbits. [14]
It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,757 days; semi-major axis of 2.85 AU). Its orbit has an eccentricity of 0.06 and an inclination of 3 ° with respect to the ecliptic. [1] In October 1905, a first precovery was taken at the Lowell Observatory in Arizona. Its first identification as A906 YO was made at Taunton Observatory ( 803) in December 1906. The body's observation arc begins with its official discovery observation at Johannesburg in September 1934. [13]
Zeelandia has been characterized as a stony S-type asteroid in both the Tholen and SMASS classification. [1]
In March 2004, a rotational lightcurve of Zeelandia was obtained from photometric observations by a collaboration of American astronomers. Lightcurve analysis gave a well-defined rotation period of 15.602 hours with a brightness variation of 0.61 magnitude ( U=3). [10] The result was confirmed by photometrists Pierre Antonini, Federico Manzini, Julian Oey and Frederick Pilcher, as well as Hiromi and Hiroko Hamanowa, who measured a similar period of 15.624 with an amplitude of 0.50 magnitude in April 2005 ( U=3). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Zeelandia measures between 19.18 and 23.63 kilometers in diameter and its surface has an albedo between 0.153 and 0.273. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.2183 and a diameter of 20.99 kilometers based on an absolute magnitude of 10.66. [3] [6]
This minor planet was named for the Dutch province of Zeeland. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 121). [2]
Discovery [1] | |
---|---|
Discovered by | H. van Gent |
Discovery site | Johannesburg Obs. |
Discovery date | 9 September 1934 |
Designations | |
(1336) Zeelandia | |
Named after |
Zeeland
[2] (a province of the Netherlands) |
1934 RW · 1929 QE 1930 XC · 1935 YF 1939 RP · A906 YO | |
main-belt · (
outer) Koronis [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.01 yr (40,913 days) |
Aphelion | 3.0348 AU |
Perihelion | 2.6654 AU |
2.8501 AU | |
Eccentricity | 0.0648 |
4.81 yr (1,757 days) | |
117.20 ° | |
0° 12m 17.28s / day | |
Inclination | 3.1972° |
97.420° | |
220.01° | |
Physical characteristics | |
Dimensions | 19.18±0.51 km
[5] 20.99±2.1 km [3] [6] 21.441±0.132 km [7] 23.056±0.108 km [8] 23.63±3.31 km [9] |
15.602
h
[10] 15.624±0.001 h [11] | |
0.153±0.280
[9] 0.1829±0.0228 [8] 0.2183±0.052 [3] [6] 0.232±0.045 [7] 0.273±0.017 [5] | |
B–V = 0.810
[1] U–B = 0.366 [1] Tholen = S [1] SMASS = S [1] [3] | |
10.66 [1] [3] [5] [6] [8] · 10.71±0.58 [12] · 10.79 [9] · 10.94±0.02 [10] | |
1336 Zeelandia, provisional designation 1934 RW, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. [13] The asteroid was named for the Dutch province of Zeeland. [2]
Zeelandia belongs to the Koronis family ( 605), [3] [4] a very large asteroid family of 6,000 known members with stony composition and nearly co-planar ecliptical orbits. [14]
It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 10 months (1,757 days; semi-major axis of 2.85 AU). Its orbit has an eccentricity of 0.06 and an inclination of 3 ° with respect to the ecliptic. [1] In October 1905, a first precovery was taken at the Lowell Observatory in Arizona. Its first identification as A906 YO was made at Taunton Observatory ( 803) in December 1906. The body's observation arc begins with its official discovery observation at Johannesburg in September 1934. [13]
Zeelandia has been characterized as a stony S-type asteroid in both the Tholen and SMASS classification. [1]
In March 2004, a rotational lightcurve of Zeelandia was obtained from photometric observations by a collaboration of American astronomers. Lightcurve analysis gave a well-defined rotation period of 15.602 hours with a brightness variation of 0.61 magnitude ( U=3). [10] The result was confirmed by photometrists Pierre Antonini, Federico Manzini, Julian Oey and Frederick Pilcher, as well as Hiromi and Hiroko Hamanowa, who measured a similar period of 15.624 with an amplitude of 0.50 magnitude in April 2005 ( U=3). [11]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Zeelandia measures between 19.18 and 23.63 kilometers in diameter and its surface has an albedo between 0.153 and 0.273. [5] [6] [7] [8] [9]
The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.2183 and a diameter of 20.99 kilometers based on an absolute magnitude of 10.66. [3] [6]
This minor planet was named for the Dutch province of Zeeland. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 121). [2]