| 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.
Orbit and classification
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]
Physical characteristics
Wolfiana is an assumed stony S-type asteroid, [3] which agrees with the overall spectral type for Florian asteroids. [10]: 23
Rotation period
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]
Diameter and albedo
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]
Naming
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]
References
- ^ a b c d "JPL Small-Body Database Browser: 827 Wolfiana (1916 ZW)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 12 January 2018.
- ^ a b c d Schmadel, Lutz D. (2007). "(827) Wolfiana". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 76. doi: 10.1007/978-3-540-29925-7_828. ISBN 978-3-540-00238-3.
- ^ a b c d e f g h "LCDB Data for (827) Wolfiana". Asteroid Lightcurve Database (LCDB). Retrieved 12 January 2018.
- ^ a b "Asteroid 827 Wolfiana – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
- ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645. Bibcode: 2014ApJ...791..121M. doi: 10.1088/0004-637X/791/2/121.
- ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407. Bibcode: 2011ApJ...741...90M. doi: 10.1088/0004-637X/741/2/90.
- ^ a b Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics. 546: 51. Bibcode: 2012A&A...546A..72K. doi: 10.1051/0004-6361/201219199.
- ^ a b Pilcher, Frederick; Martinez, Luis (January 2013). "Rotation Period Determination for 827 Wolfiana". The Minor Planet Bulletin. 40 (1): 21. Bibcode: 2013MPBu...40Q..21P. ISSN 1052-8091.
- ^ a b "827 Wolfiana (1916 ZW)". Minor Planet Center. Retrieved 12 January 2018.
- ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628. Bibcode: 2015aste.book..297N. doi: 10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 827 Wolfiana at AstDyS-2, Asteroids—Dynamic Site
- 827 Wolfiana at the JPL Small-Body Database
| 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.
Orbit and classification
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]
Physical characteristics
Wolfiana is an assumed stony S-type asteroid, [3] which agrees with the overall spectral type for Florian asteroids. [10]: 23
Rotation period
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]
Diameter and albedo
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]
Naming
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]
References
- ^ a b c d "JPL Small-Body Database Browser: 827 Wolfiana (1916 ZW)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 12 January 2018.
- ^ a b c d Schmadel, Lutz D. (2007). "(827) Wolfiana". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 76. doi: 10.1007/978-3-540-29925-7_828. ISBN 978-3-540-00238-3.
- ^ a b c d e f g h "LCDB Data for (827) Wolfiana". Asteroid Lightcurve Database (LCDB). Retrieved 12 January 2018.
- ^ a b "Asteroid 827 Wolfiana – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
- ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv: 1406.6645. Bibcode: 2014ApJ...791..121M. doi: 10.1088/0004-637X/791/2/121.
- ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407. Bibcode: 2011ApJ...741...90M. doi: 10.1088/0004-637X/741/2/90.
- ^ a b Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics. 546: 51. Bibcode: 2012A&A...546A..72K. doi: 10.1051/0004-6361/201219199.
- ^ a b Pilcher, Frederick; Martinez, Luis (January 2013). "Rotation Period Determination for 827 Wolfiana". The Minor Planet Bulletin. 40 (1): 21. Bibcode: 2013MPBu...40Q..21P. ISSN 1052-8091.
- ^ a b "827 Wolfiana (1916 ZW)". Minor Planet Center. Retrieved 12 January 2018.
- ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628. Bibcode: 2015aste.book..297N. doi: 10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
External links
- Asteroid Lightcurve Database (LCDB), query form ( info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 827 Wolfiana at AstDyS-2, Asteroids—Dynamic Site
- 827 Wolfiana at the JPL Small-Body Database