Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Vienna Obs. |
Discovery date | 29 August 1916 |
Designations | |
(827) Wolfiana | |
Named after |
Max Wolf
[2] (German astronomer) |
1916 ZW · 1928 DK 1940 RA | |
main-belt · (
inner) Flora [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 100.68 yr (36,773 d) |
Aphelion | 2.6314 AU |
Perihelion | 1.9172 AU |
2.2743 AU | |
Eccentricity | 0.1570 |
3.43 yr (1,253 days) | |
145.31 ° | |
0° 17m 14.64s / day | |
Inclination | 3.4231° |
172.92° | |
195.31° | |
Physical characteristics | |
Dimensions | 6.51 km (calculated)
[3] 8.488±0.165 km [5] 8.976±0.020 km [6] |
4.0±0.3
h
[7] 4.0654±0.0001 h [8] | |
0.1153±0.0299
[6] 0.129±0.020 [5] 0.24 (assumed) [3] | |
S (assumed) [3] | |
13.1 [1] [3] · 13.2 [6] | |
827 Wolfiana, provisional designation 1916 ZW, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered at Vienna Observatory on 29 August 1916, by Austrian astronomer Johann Palisa, who named it after German astronomer Max Wolf. [2] [9] The assumed stony asteroid has a rotation period of 4.0654 hours.
Wolfiana is a member of the Flora family ( 402), [3] [4] a giant asteroid family and the largest family of stony asteroids in the main belt. [10]: 23 It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,253 days; semi-major axis of 2.27 AU). Its orbit has an eccentricity of 0.16 and an inclination of 3 ° with respect to the ecliptic. [1] The body's observation arc begins with its official discovery observation at Vienna. [9]
Wolfiana is an assumed stony S-type asteroid, [3] which agrees with the overall spectral type for Florian asteroids. [10]: 23
In September 2012, a rotational lightcurve of Wolfiana was obtained from photometric observations by American astronomers Luis Martinez, Arizona, and Frederick Pilcher at Organ Mesa Observatory ( G50), New Mexico. Lightcurve analysis gave a well-defined rotation period of 4.0654 hours with a brightness amplitude of 0.20 magnitude ( U=3), [8] refining a period of 4.0 hours previously measured in November 2009 ( U=2). [7]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wolfiana measures 8.488 and 8.976 kilometers in diameter and its surface has an albedo of 0.129 and 0.1153, respectively. [5] [6]
The Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 6.51 kilometers based on an absolute magnitude of 13.1. [3]
This minor planet was named by the discoverer in 1920 ( AN 211;441) after German astronomer, colleague and friend, Max Wolf (1863–1932), a professor of astronomy at Heidelberg University and founder and director of the Heidelberg-Königstuhl State Observatory, who discovered several novae, comets and 248 minor planets. [2]
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 82). Asteroid 1217 Maximiliana and the lunar crater Wolf were also named in his honor. [2]
Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Vienna Obs. |
Discovery date | 29 August 1916 |
Designations | |
(827) Wolfiana | |
Named after |
Max Wolf
[2] (German astronomer) |
1916 ZW · 1928 DK 1940 RA | |
main-belt · (
inner) Flora [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 100.68 yr (36,773 d) |
Aphelion | 2.6314 AU |
Perihelion | 1.9172 AU |
2.2743 AU | |
Eccentricity | 0.1570 |
3.43 yr (1,253 days) | |
145.31 ° | |
0° 17m 14.64s / day | |
Inclination | 3.4231° |
172.92° | |
195.31° | |
Physical characteristics | |
Dimensions | 6.51 km (calculated)
[3] 8.488±0.165 km [5] 8.976±0.020 km [6] |
4.0±0.3
h
[7] 4.0654±0.0001 h [8] | |
0.1153±0.0299
[6] 0.129±0.020 [5] 0.24 (assumed) [3] | |
S (assumed) [3] | |
13.1 [1] [3] · 13.2 [6] | |
827 Wolfiana, provisional designation 1916 ZW, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered at Vienna Observatory on 29 August 1916, by Austrian astronomer Johann Palisa, who named it after German astronomer Max Wolf. [2] [9] The assumed stony asteroid has a rotation period of 4.0654 hours.
Wolfiana is a member of the Flora family ( 402), [3] [4] a giant asteroid family and the largest family of stony asteroids in the main belt. [10]: 23 It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,253 days; semi-major axis of 2.27 AU). Its orbit has an eccentricity of 0.16 and an inclination of 3 ° with respect to the ecliptic. [1] The body's observation arc begins with its official discovery observation at Vienna. [9]
Wolfiana is an assumed stony S-type asteroid, [3] which agrees with the overall spectral type for Florian asteroids. [10]: 23
In September 2012, a rotational lightcurve of Wolfiana was obtained from photometric observations by American astronomers Luis Martinez, Arizona, and Frederick Pilcher at Organ Mesa Observatory ( G50), New Mexico. Lightcurve analysis gave a well-defined rotation period of 4.0654 hours with a brightness amplitude of 0.20 magnitude ( U=3), [8] refining a period of 4.0 hours previously measured in November 2009 ( U=2). [7]
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wolfiana measures 8.488 and 8.976 kilometers in diameter and its surface has an albedo of 0.129 and 0.1153, respectively. [5] [6]
The Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 6.51 kilometers based on an absolute magnitude of 13.1. [3]
This minor planet was named by the discoverer in 1920 ( AN 211;441) after German astronomer, colleague and friend, Max Wolf (1863–1932), a professor of astronomy at Heidelberg University and founder and director of the Heidelberg-Königstuhl State Observatory, who discovered several novae, comets and 248 minor planets. [2]
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 82). Asteroid 1217 Maximiliana and the lunar crater Wolf were also named in his honor. [2]