Astronomy:3045 Alois
| Discovery [1] | |
|---|---|
| Discovered by | J. Wagner |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 8 January 1984 |
| Designations | |
| (3045) Alois | |
| Named after | Alois T. Stuczynski (discoverer's grandfather)[2] |
| 1984 AW · 1954 QD 1965 QD · 1971 SB3 1982 SY3 | |
| Minor planet category | main-belt · (outer) [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.15 yr (24,160 days) |
| |{{{apsis}}}|helion}} | 3.4822 AU |
| |{{{apsis}}}|helion}} | 2.7782 AU |
| 3.1302 AU | |
| Eccentricity | 0.1124 |
| Orbital period | 5.54 yr (2,023 days) |
| Mean anomaly | 120.77° |
| Mean motion | 0° 10m 40.8s / day |
| Inclination | 3.3434° |
| Longitude of ascending node | 36.206° |
| 330.87° | |
| Physical characteristics | |
| Dimensions | 23.51±1.58 km[4] 26.64 km (calculated)[3] 27.49±0.20 km[5] |
| Rotation period | 3.7533±0.0058 h[6] |
| Geometric albedo | 0.057 (assumed)[3] 0.059±0.009[5] 0.095±0.015[4] |
| X [7] · C [3] | |
| Absolute magnitude (H) | 11.40[4] · 11.412±0.001 (R)[6] · 11.50[5] · 11.6[1][3] · 11.91±0.17[7] |
3045 Alois, provisional designation 1984 AW, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 26 kilometers in diameter. The asteroid was discovered on 8 January 1984, by American astronomer Joe Wagner at Lowell's Anderson Mesa Station in Flagstaff, Arizona, United States.[8] It was named after the discoverer's grandfather Alois Stuczynski.[2]
Orbit and classification
Alois orbits the Sun in the outer main-belt at a distance of 2.8–3.5 AU once every 5 years and 6 months (2,023 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.[1] A first precovery was taken at Palomar Observatory in 1951, extending the body's observation arc by 33 years prior to its official discovery observation at Anderson Mesa.[8]
Physical characteristics
The C-type body is also classified as an X-type asteroid by Pan-STARRS' large-scale survey.[7]
Rotation period
In November 2010, a rotational lightcurve of Alois was obtained from photometric observations made at the Palomar Transient Factory, California. It gave a rotation period of 3.7533±0.0058 hours with a brightness amplitude of 0.18 in magnitude ({{{1}}}).[6]
Diameter and albedo
According to the space-based surveys by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer, Alois measures 23.5 and 27.5 kilometers in diameter, respectively, and has a corresponding albedo of 0.095 and 0.059.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.6 kilometers.[3]
Naming
This minor planet was named by the discoverer in memory of his grandfather, Alois T. Stuczynski.[2] The official naming citation was published by the Minor Planet Center on 7 March 1985 (M.P.C. 9479).[9]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 3045 Alois (1984 AW)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003045.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(3045) Alois". Dictionary of Minor Planet Names – (3045) Alois. Springer Berlin Heidelberg. p. 251. doi:10.1007/978-3-540-29925-7_3046. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (3045) Alois". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=3045%7CAlois.
- ↑ 4.0 4.1 4.2 4.3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan 63 (5): 1117–1138. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U. (online, AcuA catalog p. 153)
- ↑ 5.0 5.1 5.2 5.3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C. et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 13 May 2016.
- ↑ 6.0 6.1 6.2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. doi:10.1088/0004-6256/150/3/75. Bibcode: 2015AJ....150...75W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W. Retrieved 13 May 2016.
- ↑ 7.0 7.1 7.2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 13 May 2016.
- ↑ 8.0 8.1 "3045 Alois (1984 AW)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=3045.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html.
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
- 3045 Alois at AstDyS-2, Asteroids—Dynamic Site
- 3045 Alois at the JPL Small-Body Database
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