Size determination of the Centaur Chariklo from millimeter-wavelength bolometer observations

Authors
Altenhoff, WJ Menten, KM Bertoldi, F
Citation
Wj. Altenhoff et al., Size determination of the Centaur Chariklo from millimeter-wavelength bolometer observations, ASTRON ASTR, 366(2), 2001, pp. L9-L12
Citations number
40
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY AND ASTROPHYSICS
ISSN journal
00046361 → ACNP
Volume
366
Issue
2
Year of publication
2001
Pages
L9 - L12
Database
ISI
SICI code
0004-6361(200102)366:2<L9:SDOTCC>2.0.ZU;2-V
Abstract
Using the Max-Planck Millimeter Bolometer Array (MAMBO) at the IRAM 30 m te lescope we detected emission at 250 GHz from the Centaur Chariklo (1997 CU2 6). The observed continuum flux density implies a photometric diameter. of 273 km. The resulting geometric albedo is 0.055, somewhat higher than expec ted from a comparison with mast of the other few Centaurs and cometary nucl ei for which such data are available.