2328 Robeson , provisional designation 1972 HW , is a background asteroid from the inner regions of the asteroid belt , approximately 13 kilometers (8 miles) in diameter. It was discovered on 19 April 1972, by astronomer Soviet–Russian Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula.[ 1] It was named after American actor and singer Paul Robeson .[ 2] The C /X-type asteroid has a rotation period of 18.6 hours.[ 4]
Orbit and classification
Robeson is a non-family asteroid from the main belt's background population .[ 5] It orbits the Sun in the inner main-belt at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,308 days; semi-major axis of 2.34 AU). Its orbit has an eccentricity of 0.15 and an inclination of 10° with respect to the ecliptic .[ 3] The body's observation arc begins with its official discovery observation at Nauchnij in April 1972.[ 1]
Physical characteristics
In the SMASS classification Robeson is a carbonaceous C-type asteroid .[ 3] It has also been characterized as an X-type asteroid by Pan-STARRS ' photometric survey.[ 12]
Rotation period
In December 2006, a rotational lightcurve of Robeson was obtained from photometric observations at the Leura (E17 ) and Hunters Hill (E14 ) observatories in Australia. Lightcurve analysis gave a rotation period of 18.632 hours with a brightness amplitude of 0.20 magnitude (U=2+ ).[ 11]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , Robeson measures between 11.75 and 13.30 kilometers in diameter and its surface has an albedo between 0.06 and 0.1281.[ 6] [ 7] [ 8] [ 9] [ 10]
The Collaborative Asteroid Lightcurve Link assumes it to be a stony asteroid with a standard albedo of 0.20 and calculates a diameter of 7.46 kilometers based on an absolute magnitude of 13.0.[ 4]
Naming
This minor planet was named after in memory of African-American singer and actor Paul Robeson (1898–1976).[ 2] The official naming citation was published by the Minor Planet Center on 8 February 1982 (M.P.C. 6648 ).[ 13]
References
^ a b c d "2328 Robeson (1972 HW)" . Minor Planet Center . Retrieved 27 March 2018 .
^ a b c Schmadel, Lutz D. (2007). "(2328) Robeson". Dictionary of Minor Planet Names – (2328) Robeson . Springer Berlin Heidelberg. p. 190. doi :10.1007/978-3-540-29925-7_2329 . ISBN 978-3-540-00238-3 .
^ a b c d e f "JPL Small-Body Database Browser: 2328 Robeson (1972 HW)" (2018-01-22 last obs.). Jet Propulsion Laboratory . Retrieved 27 March 2018 .
^ a b c d e f g "LCDB Data for (2328) Robeson" . Asteroid Lightcurve Database (LCDB). Retrieved 27 March 2018 .
^ a b "Asteroid 2328 Robeson – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019 .
^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0" . NASA Planetary Data System . 12 : IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode :2004PDSS...12.....T . Retrieved 22 October 2019 .
^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" . The Astronomical Journal . 152 (3): 12. arXiv :1606.08923 . Bibcode :2016AJ....152...63N . doi :10.3847/0004-6256/152/3/63 .
^ a b c d 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 . S2CID 46350317 . Retrieved 27 March 2018 .
^ a b c d e f Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos" . The Astrophysical Journal . 814 (2): 13. arXiv :1509.02522 . Bibcode :2015ApJ...814..117N . doi :10.1088/0004-637X/814/2/117 . S2CID 9341381 . Retrieved 27 March 2018 .
^ a b c d 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 . (online , AcuA catalog p. 153 )
^ a b Higgins, David; Oey, Julian (September 2007). "Asteroid Lightcurve Analysis at Hunters Hill Observatory and Collaborating Stations - December 2006 - April 2007" . The Minor Planet Bulletin . 34 (3): 79–80. Bibcode :2007MPBu...34...79H . ISSN 1052-8091 . Retrieved 27 March 2018 .
^ a b c 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 . S2CID 53493339 . Retrieved 27 March 2018 .
^ "MPC/MPO/MPS Archive" . Minor Planet Center . Retrieved 27 March 2018 .
External links