Notes. The top part of the table shows: object name; α: phase angle range of observations utilized in the determination of H; N: number of available observations; β: linear phase coefficient; H_V: absolute magnitude in the V band with respective uncertainty; photometry references; Δ_mag: optical lightcurve amplitude (peak-to-peak); Ice?: information on the presence of ices, if available (discoveries in parentheses are tentative); LC & Ice Ref.: lightcurve and ice references. The lower part of the table shows different color indices for our sample objects, where available, including uncertainties, and the spectral slope s in percent of reddening per 100 nm as determined from the given color information following Hainaut & Delsanti (2002), and references. The weighted sample mean (cf. Table 3) of each color index is given for comparison, as well as some color indices of the Sun. We determine the weighted mean  ⟨ x ⟩  of quantities x_i using the absolute uncertainties σ_i as weighting parameter. The uncertainty of  ⟨ x ⟩ , σ, is calculated as Defined this way, σ is a combination of the weighted root mean square and the weighted standard deviation of the uncertainties.

References. MPC: photometric data were provided by the Minor Planet Center observations database (http://minorplanetcenter.net/iau/ECS/MPCOBS/MPCOBS.html); (1): Boehnhardt et al. (2001); (2): Davies et al. (2000); (3): Jewitt & Luu (1998); (4): Collander-Brown et al. (1999); (5): Tegler & Romanishin (1998); (6): Barucci et al. (1999); (7): Jewitt & Luu (2001); (8): Doressoundiram et al. (2001); (9): Delsanti et al. (2001); (10): McBride et al. (2003); (11): Tegler et al. (2003); (12): Dotto et al. (2003); (13): Rabinowitz et al. (2007); (14): DeMeo et al. (2009); (15): Benecchi et al. (2009); (16): Ortiz et al. (2003); (17): Sheppard & Jewitt (2002); (18): Boehnhardt et al. (2001); (19): Tegler (priv. comm.); (20): Doressoundiram et al. (2002); (21): Doressoundiram et al. (2007); (22): Sheppard & Jewitt (2003); (23): Peixinho et al. (2004); (24): Fornasier et al. (2004); (25): Doressoundiram et al. (2005); (26): Barucci et al. (2006); (27): Ortiz et al. (2006); (28): Perna et al. (2010); (29): Santos-Sanz et al. (2009); (30): Thirouin et al. (2010); (31): Romanishin et al. (2010); (32): Ferrin et al. (2001); (33): Buie et al. (1997); (34): Rabinowitz et al. (2008); (35): Doressoundiram et al. (2008); (36): Barkume et al. (2008); (37): Licandro et al. (2001); (38): Brown (2000); (39): de Bergh et al. (2004); (40): Alvarez-Candal et al. (2007); (41): Merlin et al. (2005); (42): Guilbert et al. (2009); (43): Protopapa et al. (2009); (44): Barucci et al. (2012); (45): Owen et al. (1993); (46): DeMeo et al. (2010); (47): Merlin et al. (2010); (48): Barucci et al. (2011).