1762 Russell

1762 Russell, provisional designation 1953 TZ, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 16 kilometers in diameter. It was discovered by the Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, on 8 October 1953.[10] The asteroid was named after American astronomer Henry Norris Russell.[2]

1762 Russell
Discovery [1]
Discovered byIndiana University
(Indiana Asteroid Program)
Discovery siteGoethe Link Obs.
Discovery date8 October 1953
Designations
(1762) Russell
Named after
Henry Norris Russell[2]
(American astronomer)[2]
1953 TZ · 1947 LM
1953 TW2 · 1956 GF
1963 VN
main-belt · (outer)
Koronis [3][4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc69.52 yr (25,393 days)
Aphelion3.0998 AU
Perihelion2.6514 AU
2.8756 AU
Eccentricity0.0780
4.88 yr (1,781 days)
21.771°
0° 12m 7.56s / day
Inclination2.2793°
160.64°
233.54°
Physical characteristics
Dimensions15.61 km (calculated)[3]
16.576±0.195 km[5]
16.93±0.97 km[6]
17.03±0.21 km[7]
17.033±0.209 km[7]
12.797±0.007 h[8]
0.118±0.015[6]
0.1227±0.0369[5]
0.201±0.022[7][7]
0.24 (assumed)[3]
S [3]
11.20[7][1][3] · 11.69±0.12[9] · 11.80[6][5]

    Orbit and classification

    Russell is a member of the Koronis family (605), a very large outer asteroid family with nearly co-planar ecliptical orbits.[3][4] It orbits the Sun in the outer main-belt at a distance of 2.7–3.1 AU once every 4 years and 11 months (1,781 days). Its orbit has an eccentricity of 0.08 and an inclination of 2° with respect to the ecliptic.[1]

    The asteroid was first identified as 1947 LM at Lowell Observatory in June 1947. The body's observation arc begins with a precovery at Goethe Link Observatory in February 1950, more than 3 years prior to its official discovery observation.[10]

    Physical characteristics

    Russell is an assumed stony S-type asteroid, which agrees with the overall spectral type of the Koronis family.[3][11]:23

    Rotation period

    In April 2014, a rotational lightcurve of Russell was obtained from photometric observations at the Sonoita Research Observatory (G93) and Etscorn Campus Observatory (719). Lightcurve analysis gave a rotation period of 12.797 hours with a brightness variation of 0.46 magnitude (U=3-).[8]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Russell measures between 16.576 and 17.033 kilometers in diameter and its surface has an albedo between 0.118 and 0.201.[5][6][7]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 15.61 kilometers based on an absolute magnitude of 11.2.[3]

    Naming

    This minor planet was named after distinguished American astronomer Henry Norris Russell (1877–1957), noted for the H–R diagram and research on a variety of topics in fundamental astronomy, astrophysics, and the analysis of atomic spectra (see Russell–Saunders coupling).[2]

    The official naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3143).[12] Russell is also honored by both a lunar and a Martian crater.[2]

    gollark: Kicking complete.
    gollark: Kicking initiated.
    gollark: These MAY be spambots.
    gollark: Highly suspicious.
    gollark: What?

    References
    1. "JPL Small-Body Database Browser: 1762 Russell (1953 TZ)" (2016-12-22 last obs.). Jet Propulsion Laboratory. Retrieved 5 September 2017.
    2. Schmadel, Lutz D. (2007). "(1762) Russell". Dictionary of Minor Planet Names – (1762) Russell. Springer Berlin Heidelberg. p. 140. doi:10.1007/978-3-540-29925-7_1763. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1762) Russell". Asteroid Lightcurve Database (LCDB). Retrieved 5 September 2017.
    4. "Asteroid 1762 Russell – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    5. 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. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    6. 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. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    7. 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 5 September 2017.
    8. Cooney, Walter R., Jr.; Gross, John; Terrell, Dirk; Klinglesmith, Daniel A., III; Hanowell, Jesse (January 2015). "Rotation Period and Lightcurve of 1762 Russell". The Minor Planet Bulletin. 42 (1): 66–67. Bibcode:2015MPBu...42...66C. ISSN 1052-8091. Retrieved 5 September 2017.
    9. 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 5 September 2017.
    10. "1762 Russell (1953 TZ)". Minor Planet Center. Retrieved 5 September 2017.
    11. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
    12. Schmadel, Lutz D. "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.

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