Astronomy:4358 Lynn
| Discovery [1] | |
|---|---|
| Discovered by | P. H. Cowell |
| Discovery site | Greenwich Obs. |
| Discovery date | 5 October 1909 |
| Designations | |
| (4358) Lynn | |
| Named after | William Thynne Lynn (astronomer and author)[2] |
| A909 TF · 1943 VB 1981 TO1 · 1985 SD6 1988 GK | |
| Minor planet category | main-belt · Eunomia [3] |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 107.67 yr (39,325 days) |
| |{{{apsis}}}|helion}} | 3.0579 AU |
| |{{{apsis}}}|helion}} | 2.1567 AU |
| 2.6073 AU | |
| Eccentricity | 0.1728 |
| Orbital period | 4.21 yr (1,538 days) |
| Mean anomaly | 296.97° |
| Mean motion | 0° 14m 2.76s / day |
| Inclination | 13.084° |
| Longitude of ascending node | 15.249° |
| 260.32° | |
| Physical characteristics | |
| Dimensions | 9.12±0.37 km[4] 10.53 km (calculated)[3] |
| Rotation period | 3.8377±0.0006 h[5] |
| Geometric albedo | 0.21 (assumed)[3] 0.307±0.034[4] |
| S [3] | |
| Absolute magnitude (H) | 12.10[4] · 12.2[1][3] · 12.84±0.64[6] |
4358 Lynn, provisional designation A909 TF, is a stony Eunomia asteroid from the central region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by British astronomer Philip Herbert Cowell at the Royal Greenwich Observatory on 5 October 1909.[7] It was named for William Lynn, an assistant astronomer at the discovering observatory.[2]
Orbit and classification
Lynn is a member of the Eunomia family, a large group of stony asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun in the central main-belt at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,538 days). Its orbit has an eccentricity of 0.17 and an inclination of 13° with respect to the ecliptic.[1] No precoveries or identifications were made prior to its discovery, and the asteroid's observation arc begins in 1909.[7]
Physical characteristics
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Lynn measures 9.1 kilometers in diameter and its surface has a high albedo of 0.307.[4] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Eunomia family of 0.21 and calculates a diameter of 10.5 kilometers with an absolute magnitude of 12.2.[3]
Lightcurve
In April 2009, a rotational lightcurve of Lynn was obtained from photometric observations made at the Oakley Southern Sky Observatory (E09) in Australia. Lightcurve analysis gave a well-defined rotation period of 3.8377 hours with a brightness variation of 0.60 in magnitude ({{{1}}}).[5]
Naming
This minor planet is named for William Thynne Lynn (1835–1911), who worked for many years as an assistant at the Royal Greenwich Observatory during the second half of the 19th century. He was also an author of various well received books and many short notes on astronomical topics, which were printed in The Observatory.[2] It was named by the Minor Planet Names Committee after a proposal by Brian G. Marsden.[7] The approved naming citation was published by the Minor Planet Center on 1 September 1993 (M.P.C. 22501).[8]
References
- ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 4358 Lynn (A909 TF)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2004358.
- ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(4358) Lynn". Dictionary of Minor Planet Names – (4358) Lynn. Springer Berlin Heidelberg. p. 374. doi:10.1007/978-3-540-29925-7_4310. ISBN 978-3-540-00238-3.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (4358) Lynn". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=4358%7CLynn.
- ↑ 4.0 4.1 4.2 4.3 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 9 June 2016.
- ↑ 5.0 5.1 Ditteon, Richard; Kirkpatrick, Elaine; Doering, Katelyn (January 2010). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2009 April - May". The Minor Planet Bulletin 37 (1): 1–3. ISSN 1052-8091. Bibcode: 2010MPBu...37....1D. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37....1D. Retrieved 9 June 2016.
- ↑ 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 9 June 2016.
- ↑ 7.0 7.1 7.2 "4358 Lynn (A909 TF)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=4358.
- ↑ "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
- 4358 Lynn at AstDyS-2, Asteroids—Dynamic Site
- 4358 Lynn at the JPL Small-Body Database
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