Astronomy:2017 Wesson
| Discovery[1] | |
|---|---|
| Discovered by | M. F. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 20 September 1903 |
| Designations | |
| (2017) Wesson | |
| Named after | Mary Wesson (wife of C. M. Bardwell)[2] |
| A903 SC · 1936 FA2 1949 CG · 1950 LD1 1970 GE · 1974 QJ1 | |
| Minor planet category | main-belt · (inner)[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.60 yr (41,492 days) |
| |{{{apsis}}}|helion}} | 2.6710 AU |
| |{{{apsis}}}|helion}} | 1.8340 AU |
| 2.2525 AU | |
| Eccentricity | 0.1858 |
| Orbital period | 3.38 yr (1,235 days) |
| Mean anomaly | 290.04° |
| Mean motion | 0° 17m 29.4s / day |
| Inclination | 4.8605° |
| Longitude of ascending node | 171.31° |
| 136.28° | |
| Physical characteristics | |
| Dimensions | 7.223±0.156 km[4][5] 7.23 km (derived)[3] |
| Rotation period | 2.988 h[6] 3.4158±0.0005 h[7] 3.41581±0.00003 h[8] |
| Geometric albedo | 0.200±0.055[3][4][5] |
| S[3] B–V = 0.887[1] U–B = 0.545[1] | |
| Absolute magnitude (H) | 12.61±0.14[9] · 12.78[1] · 13.07[3][4][6] |
2017 Wesson, provisional designation A903 SC, is a stony asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 20 September 1903, by German astronomer Max Wolf at Heidelberg Observatory in southern Germany.[10] It was later named after Mary Joan Wesson Bardwell, wife of Conrad Bardwell, an associate director of the Minor Planet Center.[2]
Orbit and classification
Wesson orbits the Sun in the inner main belt at a distance of 1.8–2.7 AU, orbiting once every 3 years and 5 months (1,235 days). Its orbit has an eccentricity of 0.19 and an inclination of 5° with respect to the ecliptic.[1]
Physical characteristics
Wesson has been characterized as a stony S-type asteroid.[3] It has a rotation period of 3.418 hours. The numerous lightcurves have a brightness variation of 0.30 to 0.60 magnitude ({{{1}}}).[6][7][8] According to the survey carried out by NASA's Wide-field Infrared Survey Explorer (WISE) with its subsequent NEOWISE mission, the asteroid measures 7.2 kilometers in diameter and its surface has an albedo of 0.200.[4][5] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by WISE.[3]
Naming
The asteroid was named after Mary Joan Wesson Bardwell, wife of Conrad M. Bardwell (1926–2010), after whom the minor planet 1615 Bardwell is named. He also established the identifications for this minor planet.[2] The official naming citation was published by the Minor Planet Center on 1 April 1978 (M.P.C. 4358).[11]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "JPL Small-Body Database Browser: 2017 Wesson (A903 SC)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002017.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(2017) Wesson". Dictionary of Minor Planet Names – (2017) Wesson. Springer Berlin Heidelberg. p. 163. doi:10.1007/978-3-540-29925-7_2018. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (2017) Wesson". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=2017%7CWesson.
- ↑ 4.0 4.1 4.2 4.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M.
- ↑ 5.0 5.1 5.2 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 8 December 2016.
- ↑ 6.0 6.1 6.2 Wisniewski, W. Z. (March 1991). "Physical studies of small asteroids. I – Lightcurves and taxonomy of 10 asteroids". Icarus 90 (1): 117–122. doi:10.1016/0019-1035(91)90073-3. ISSN 0019-1035. Bibcode: 1991Icar...90..117W. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1991Icar...90..117W. Retrieved 8 December 2016.
- ↑ 7.0 7.1 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. doi:10.1051/0004-6361/201219199. Bibcode: 2012A&A...546A..72K. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..72K. Retrieved 8 December 2016.
- ↑ 8.0 8.1 Behrend, Raoul. "Asteroids and comets rotation curves – (2017) Wesson". Geneva Observatory. http://obswww.unige.ch/~behrend/page4cou.html#002017.
- ↑ 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 8 December 2016.
- ↑ "2017 Wesson (A903 SC)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2017.
- ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7. https://archive.org/details/dictionaryminorp2008schm.
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
- 2017 Wesson at AstDyS-2, Asteroids—Dynamic Site
- 2017 Wesson at the JPL Small-Body Database
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