Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu

Carl W. Hergenrother, Michael C. Nolan, Richard P. Binzel, Edward A. Cloutis, Maria Antonietta Barucci, Patrick Michel, Daniel J. Scheeres, Christian Drouet d'Aubigny, Daniela Lazzaro, Noemi Pinilla-Alonso, Humberto Campins, Javier Licandro, Beth E. Clark, Bashar Rizk, Edward C Beshore, Dante Lauretta

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The NASA OSIRIS-REx mission will retrieve a sample of the carbonaceous near-Earth Asteroid (101955) Bennu and return it to Earth in 2023. Photometry in the Eight Color Asteroid Survey (ECAS) filter system and Johnson-Cousins V and R filters were conducted during the two most recent apparitions in 2005/2006 and 2011/2012. Lightcurve observations over the nights of September 14-17, 2005 yielded a synodic rotation period of 4.2905. ±. 0.0065. h, which is consistent with the results of Nolan et al. (2013). ECAS color measurements made during the same nights confirm the B-type classification of Clark et al. (Clark, B.E., Binzel, R.P., Howell, E.S., Cloutis, E.A., Ockert-Bell, M., Christensen, P., Barucci, M.A., DeMeo, F., Lauretta, D.S., Connolly, H., Soderberg, A., Hergenrother, C., Lim, L., Emery, J., Mueller, M. [2011]. Icarus 216, 462-475). A search for the 0.7. μm hydration feature using the method of Vilas (Vilas, F. [1994]. Icarus 111, 456-467) did not reveal its presence. Photometry was obtained over a range of phase angles from 15° to 96° between 2005 and 2012. The resulting phase function slope of 0.040 magnitudes per degree is consistent with the phase slopes of other low albedo near-Earth asteroids (Belskaya, I.N., Shevchenko, V.G. [2000]. Icarus 147, 94-105).

Original languageEnglish (US)
Pages (from-to)663-670
Number of pages8
JournalIcarus
Volume226
Issue number1
DOIs
StatePublished - Sep 2013

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OSIRIS
asteroids
asteroid
photometry
color
night
slopes
filter
filters
albedo
hydration
bells
phase shift

Keywords

  • Asteroids
  • Asteroids, Rotation
  • Near-Earth objects
  • Photometry

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Hergenrother, C. W., Nolan, M. C., Binzel, R. P., Cloutis, E. A., Barucci, M. A., Michel, P., ... Lauretta, D. (2013). Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu. Icarus, 226(1), 663-670. https://doi.org/10.1016/j.icarus.2013.05.044

Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu. / Hergenrother, Carl W.; Nolan, Michael C.; Binzel, Richard P.; Cloutis, Edward A.; Barucci, Maria Antonietta; Michel, Patrick; Scheeres, Daniel J.; d'Aubigny, Christian Drouet; Lazzaro, Daniela; Pinilla-Alonso, Noemi; Campins, Humberto; Licandro, Javier; Clark, Beth E.; Rizk, Bashar; Beshore, Edward C; Lauretta, Dante.

In: Icarus, Vol. 226, No. 1, 09.2013, p. 663-670.

Research output: Contribution to journalArticle

Hergenrother, CW, Nolan, MC, Binzel, RP, Cloutis, EA, Barucci, MA, Michel, P, Scheeres, DJ, d'Aubigny, CD, Lazzaro, D, Pinilla-Alonso, N, Campins, H, Licandro, J, Clark, BE, Rizk, B, Beshore, EC & Lauretta, D 2013, 'Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu', Icarus, vol. 226, no. 1, pp. 663-670. https://doi.org/10.1016/j.icarus.2013.05.044
Hergenrother CW, Nolan MC, Binzel RP, Cloutis EA, Barucci MA, Michel P et al. Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu. Icarus. 2013 Sep;226(1):663-670. https://doi.org/10.1016/j.icarus.2013.05.044
Hergenrother, Carl W. ; Nolan, Michael C. ; Binzel, Richard P. ; Cloutis, Edward A. ; Barucci, Maria Antonietta ; Michel, Patrick ; Scheeres, Daniel J. ; d'Aubigny, Christian Drouet ; Lazzaro, Daniela ; Pinilla-Alonso, Noemi ; Campins, Humberto ; Licandro, Javier ; Clark, Beth E. ; Rizk, Bashar ; Beshore, Edward C ; Lauretta, Dante. / Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu. In: Icarus. 2013 ; Vol. 226, No. 1. pp. 663-670.
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