TY - JOUR
T1 - Lightcurve, Color and Phase Function Photometry of the OSIRIS-REx Target Asteroid (101955) Bennu
AU - Hergenrother, Carl W.
AU - Nolan, Michael C.
AU - Binzel, Richard P.
AU - Cloutis, Edward A.
AU - Barucci, Maria Antonietta
AU - Michel, Patrick
AU - Scheeres, Daniel J.
AU - d'Aubigny, Christian Drouet
AU - Lazzaro, Daniela
AU - Pinilla-Alonso, Noemi
AU - Campins, Humberto
AU - Licandro, Javier
AU - Clark, Beth E.
AU - Rizk, Bashar
AU - Beshore, Edward C.
AU - Lauretta, Dante S.
N1 - Funding Information:
At the time of observations, the Arecibo Observatory was part of the National Astronomy and Ionosphere Center, which was operated by Cornell University under a cooperative agreement with the National Science Foundation. This material is based upon work supported by the National Aeronautics and Space Administration Grant No. NNX10AP64G issued through the Near-Earth Object Observations Program. E.A.C. thanks NSERC and the CSA for support for this project. M.A.B. and P.M. thank CNES for support for this project. The OSIRIS-REx mission is funded by the NASA New Frontiers Program.
PY - 2013/9
Y1 - 2013/9
N2 - 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).
AB - 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).
KW - Asteroids
KW - Asteroids, Rotation
KW - Near-Earth objects
KW - Photometry
UR - https://www.scopus.com/pages/publications/84880375902
UR - https://www.scopus.com/pages/publications/84880375902#tab=citedBy
U2 - 10.1016/j.icarus.2013.05.044
DO - 10.1016/j.icarus.2013.05.044
M3 - Article
AN - SCOPUS:84880375902
SN - 0019-1035
VL - 226
SP - 663
EP - 670
JO - Icarus
JF - Icarus
IS - 1
ER -