Astronomy:1169 Alwine
| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf M. Ferrero |
| Discovery site | Heidelberg Obs. |
| Discovery date | 30 August 1930 |
| Designations | |
| (1169) Alwine | |
| Named after | unknown[2] |
| 1930 QH · 1937 VH 1955 SK1 · 1955 SR1 | |
| Minor planet category | main-belt · (inner) Flora[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 86.77 yr (31,691 days) |
| |{{{apsis}}}|helion}} | 2.6775 AU |
| |{{{apsis}}}|helion}} | 1.9599 AU |
| 2.3187 AU | |
| Eccentricity | 0.1547 |
| Orbital period | 3.53 yr (1,290 days) |
| Mean anomaly | 155.85° |
| Mean motion | 0° 16m 45.12s / day |
| Inclination | 4.0522° |
| Longitude of ascending node | 255.08° |
| 177.29° | |
| Physical characteristics | |
| Dimensions | 7.893±0.185 km[4] |
| Geometric albedo | 0.179±0.024[4] |
| Absolute magnitude (H) | 12.8[1] |
1169 Alwine, provisional designation 1930 QH, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 30 August 1930, by German and Italian astronomers Max Wolf and Mario Ferrero at Heidelberg Observatory in southwest Germany.[5] Any reference of its name to a person is unknown.[2]
Orbit and classification
Alwine is a member of the Flora family (402),[3] a giant asteroid family and the largest family of stony asteroids in the main belt.[6]:23 It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.7 AU once every 3 years and 6 months (1,290 days; semi-major axis of 2.32 AU). Its orbit has an eccentricity of 0.15 and an inclination of 4° with respect to the ecliptic.[1] As no precoveries were taken, and no prior identifications were made, Alwine's observation arc begins with its official discovery observation at Heidelberg in August 1930.[5]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Alwine measures 7.89 kilometers in diameter, and its surface has an albedo of 0.179.[4] Based on a generic magnitude-to-diameter conversion, its diameter is between 7 and 17 kilometers for an absolute magnitude of 12.8 and an albedo in the range of 0.05 to 0.25.[7]
Lightcurve
As of 2017, no rotational lightcurves have been obtained. The body's rotation period, pole and shape remain unknown.[1][8]
Naming
This minor planet is named after a common German female name. Any reference of this name to a person or occurrence is unknown.[2]
Unknown meaning
Among the many thousands of named minor planets, Alwine is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.[9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 "JPL Small-Body Database Browser: 1169 Alwine (1930 QH)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001169.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1169) Alwine". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 98. doi:10.1007/978-3-540-29925-7_1170. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 "Asteroid 1169 Alwine – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1169+Alwine#Asteroid%201169%20AlwineEAR-A-VARGBDET-5-NESVORNYFAM-V3.0.
- ↑ 4.0 4.1 4.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 1 February 2017.
- ↑ 5.0 5.1 Cite error: Invalid
<ref>tag; no text was provided for refs namedMPC-Alwine - ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1. Bibcode: 2015aste.book..297N.
- ↑ "Absolute Magnitude (H)". NASA/JPL. http://neo.jpl.nasa.gov/glossary/h.html.
- ↑ "LCDB Data for (1169) Alwine". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1169%7CAlwine.
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedDOMPN-unknown
External links
- Asteroid Lightcurve Database (LCDB), query form (info )
- 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
- 1169 Alwine at AstDyS-2, Asteroids—Dynamic Site
- 1169 Alwine at the JPL Small-Body Database
 |  |
