4358 Lynn

4358 Lynn
Discovery [1]
Discovered by P. H. Cowell
Discovery site Greenwich Obs.
Discovery date 5 October 1909
Designations
MPC designation (4358) Lynn
Named after
 William Thynne Lynn
(astronomer and author)[2]
A909 TF · 1943 VB
1981 TO1 · 1985 SD6
1988 GK
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)
Aphelion 3.0579 AU
Perihelion 2.1567 AU
2.6073 AU
Eccentricity 0.1728
4.21 yr (1,538 days)
296.97°
0° 14m 2.76s / day
Inclination 13.084°
15.249°
260.32°
Physical characteristics
Dimensions 9.12±0.37 km[4]
10.53 km (calculated)[3]
3.8377±0.0006 h[5]
0.21 (assumed)[3]
0.307±0.034[4]
S [3]
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 (U=3).[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. 1 2 3 4 "JPL Small-Body Database Browser: 4358 Lynn (A909 TF)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 20 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4358) Lynn. Springer Berlin Heidelberg. p. 374. ISBN 978-3-540-00238-3. Retrieved 9 June 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (4358) Lynn". Asteroid Lightcurve Database (LCDB). Retrieved 9 June 2016.
    4. 1 2 3 4 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. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 9 June 2016.
    5. 1 2 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. Bibcode:2010MPBu...37....1D. ISSN 1052-8091. Retrieved 9 June 2016.
    6. ↑ 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. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 9 June 2016.
    7. 1 2 3 "4358 Lynn (A909 TF)". Minor Planet Center. Retrieved 9 June 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 June 2016.
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