\begin{table}%t1 \caption{\label{table1}List of TNOs whose variability has been studied. When a multiple determination of the rotational period is present, the preferred period is marked in bold.} \small%\centering \begin{tabular}{llccccc} \hline\hline \noalign{\smallskip} Object & Designation & Single Peak & Double Peak & Amplitude & Absolute & Ref.$^{b}$\\ & & period [h] & period [h] & [mag]&~magnitude$^{a}$ & \\ \hline (134340) Pluto & & 153.6 & -- & 0.33 & $-$0.7 & B97,TH90 \\ Charon & & 153.6 & -- & 0.08 & 0.9 & B97 \\ (148780) Altjira & 2001~UQ$_{18}$ & -- & -- & $<$0.10 & 5.6 & S07 \\ (55576)~Amycus & 2002~GB$_{10}$ & 9.76 & 19.52 & 0.16~$\pm$~0.01 & 7.8 & Th09 \\ (8405) Asbolus & 1995~GO & 4.47 & 8.9351~$\pm$~0.003& 0.55 & 9.0 & D98a,K00 \\ & & -- & -- & 0.34 & ... & RT99 \\ (54598) Bienor & 2000~QC$_{243}$ & 4.57~$\pm$~0.02 & 9.14~$\pm$~0.04 & 0.75~$\pm$~0.09 & 7.6 & O03b \\ & & 9.17 & -- & 0.34~$\pm$~0.08 & ... & R07a \\ (66652) Borasisi & 1999~RZ$_{253}$ & -- &-- & $<$0.05 & 5.9 & LL06 \\ (65489) Ceto & 2003~FX$_{128}$ & -- & 4.43~$\pm$~0.03 & 0.13~$\pm$~0.02 & 6.3 & SJ02 \\ (19521) Chaos & 1998~WH$_{24}$ & -- &-- & $<$0.10 & 4.9 & SJ02,LL06 \\ (10199) Chariklo & 1997~CU$_{26}$ & -- & -- & $<$0.1 & 6.4 & LL06 \\ (2060) Chiron & 1977~UB & -- & 5.9180 $\pm$ 0.0001 & 0.088~$\pm$~0.003& 6.5 & B89 \\ (83982) Crantor & 2002~GO$_{9}$ & (6.97 or 9.67)~$\pm$~0.04& -- & 0.14~$\pm$~0.04 & 9.1 & O03b \\ & & -- & -- & 0.34 & ... & RT99 \\ (60558) Echeclus & 2000~EC$_{98}$ & 13.401 & 26.802 & 0.24~$\pm$~0.06 & 9.0 & R03 \\ (31824) Elatus & 1999~UG$_{5}$ & 13.25 & -- & 0.24 & 10.1 & G01 \\ & & 13.41~$\pm$~0.04 & -- & 0.102~$\pm$~0.005 & ... & B02 \\ (136199) Eris & 2003~UB$_{313}$ & 13.69/28.08/32.13& -- & $<$0.1~$\pm$~0.01 & $-$1.2 & D07 \\ & & 3.55? & -- & $\sim$0.05 & ... & L07 \\ & & -- & -- & $<$0.01 & ... & R07a,S07 \\ & & $~$25.92 & -- & $~$0.1 & ... & R08 \\ (136108) Haumea & 2003~EL$_{61}$ & -- & 3.9154~$\pm$~0.0002 & 0.28~$\pm$~0.04 & 0.2 & R06\\ & & -- & 3.9155~$\pm$~0.0001 & 0.29~$\pm$~0.02 & ... & LJ08 \\ & & 1.96 & 3.92 & 0.23 $\pm$0.02 & ... & Th09\\ (10370) Hylonome & 1995~DW$_{2}$ & -- & -- & $<$0.04 & 8.0 & RT99 \\ (38628) Huya & 2000~EB$_{173}$ & 6.68/\textbf{6.75}/6.82 & -- & $<$0.1 & 4.7 & O03b \\ & & -- & -- & $<$0.06 &... & O03b,SJ02,S02 \\ & & -- & -- & $<$0.04 &... & SJ03,LL06 \\ (28978) Ixion & 2001~KX$_{76}$ & -- & -- & $<$0.05 & 3.2 & O03b,SJ03 \\ & & -- & -- & $<$0.10 & ... & SJ02,LL06 \\ (136472) Makemake & 2005~FY$_{9}$ &11.24~$\pm$~0.01 & 20.54/\textbf{22.48} & 0.03~$\pm$~0.01& $-$0.3 & O07 \\ & & 7.65 & 15.30 & 0.014~$\pm$~0.002 & ... & Th09 \\ (7066) Nessus & 1993~HA$_{2}$ & -- & -- & 0.5 & 9.6 & RT99 \\ & & -- & -- & $<$0.2 & ... & D98b \\ (52872)~Okyrhoe & 1998~SG$_{35}$ & 4.86/6.08 & 9.72/12.16 & 0.07~$\pm$~0.01 & 11.3 & Th09 \\ (90482) Orcus & 2004~DW & 7.09/\textbf{10.47~$\pm$~0.01}/17.43 & \textbf{20.94} & 0.03~$\pm$~0.01 & 2.3 & O06 \\ & & 13.19 & -- & 0.18 &... & RO7a \\ & & -- & -- & $<$0.03 &... & S07 \\ & & 10.47 & 20.94 & 0.03~$\pm$~0.01 & ... & Th09 \\ (5145) Pholus & 1992~AD & -- & 9.98 & 0.15/0.60 & 7.0 &B92,H92,F01,T05 \\ & & -- & -- & 0.15 & ... & RT99 \\ (50000) Quaoar & 2002~LM$_{60}$ & -- & 17.6788~$\pm$~0.0004 & 0.13~$\pm$~0.03 & 2.6 & O03b \\ & & 8.84 & -- & 0.18~$\pm$~0.10 & ... & R07a \\ & & 9.42 & 18.84 & $\sim$0.3 & ... & L07 \\ & & 8.84 & 17.68 & 0.13~$\pm$~0.04 & ... & Th09 \\ (90377) Sedna & 2003~VB$_{12}$ & 10.273~$\pm$~0.003& -- & 0.02 & 1.6 & G05 \\ (88611) Teharonhiawako &2001~QT$_{297}$ & -- & -- & $<$0.15 & 5.5 & Os03 \\ (32532) Thereus & 2001~PT$_{13}$ & 4.1546~$\pm$~0.0001& 8.3091~$\pm$~0.0001 & 0.16~$\pm$~0.02 & 9.0 & O03b \\ & & -- & 8.34 & 0.16 &... & FD03 \\ & & -- & 8.34 & 0.34~$\pm$~0.08 &... & R07a \\ & & -- & 8.4 & 0.15 &... & F01 \\ (42355) Typhon & 2002~CR$_{46}$ & 9.67 & 19.34 & 0.06~$\pm$~0.01 & 7.2 & O03b \\ & & -- & -- & $<$0.05 & ... & SJ03 \\ & & $>$5 & -- & -- & ... & D08 \\ & & 9.67 & 19.34 & 0.06~$\pm$~0.01 & ... & Th09 \\ (20000) Varuna & 2000~WR$_{106}$ & 3.1718 & 6.3436~$\pm$~0.0001 & 0.43~$\pm$~0.01 & 3.6 & O03b \\ & & -- & 6.34 & 0.42~$\pm$~0.03 & ... & SJ02 \\ & & 3.17 & 6.34 & 0.5 & ... & F01 \\ & & -- &6.34358~$\pm$~0.00002 & 0.42 & ... & B06 \\ & & -- & 6.344 & 0.49~$\pm$~0.17 & ... & R07a \\ & & 3.1709 & 6.3418 & 0.43~$\pm$~0.01 & ... & Th09 \\ (15789) & 1993~SC & 7.7 & -- & 0.04 & 6.9 & T97 \\ & & -- & -- & $<$0.04 & ... & RT99 \\ \hline (15820) & 1994~TB & 3.0/3.5 &6.0/7.0 & 0.26/0.34 & 7.1 & RT99 \\ & & -- & -- & $<$0.04 & ... & SJ02 \\ (19255) & 1994~VK$_{8}$ & 3.9/4.3/4.7/5.2 & 7.8/8.6/9.4/10.4& 0.42 & 7.0 & RT99 \\ & & 4.75 & -- & -- & ... & CB99 \\ (24835) & 1995~SM$_{55}$ & 4.04~$\pm$~0.03 & 8.08~$\pm$~0.03 & 0.19~$\pm$~0.05 & 4.8 & SJ02 \\ (32929) & 1995~QY$_{9}$ & $~$3.5 & $~$7.0 & 0.60 & 7.5 & RT99 \\ & & Between 3.3 and 3.7 & -- & 0.60 & ... & RT99 \\ & & -- & 7.3~$\pm$~0.1 & 0.60~$\pm$~0.04 & ... & RT99,SJ02 \\ (26181) & 1996~GQ$_{21}$ & -- & -- & $<$0.10 & 5.2 & SJ02\\ (15874) & 1996~TL$_{66}$ & 12.1 & -- & $<$0.12 & 5.4 & O06 \\ & & -- & -- & $<$0.06 & ... & LJ98,RT99 \\ & &$~$6/8.04/\textbf{$~$12}& \textbf{$~$24} & 0.09~$\pm$~0.02 & ... & Th09 \\ (19308) & 1996~TO$_{66}$ & \textbf{3.96~$\pm$~0.04}& \textbf{7.92~$\pm$~0.04}/5.9/9.6 & 0.25~$\pm$~0.05& 4.5& SJ03\\ & & -- & 11.9 & 0.25~$\pm$~0.05 & ... & B06 \\ & & -- & 6.25~$\pm$~0.03 & 0.12 to 0.33 & ... & H00 \\ & & -- & -- & $<$0.10 & ... & RT99 \\ (15875) & 1996~TP$_{66}$ & 1.96 & -- & $<$0.04 & 6.8 & CB99 \\ & & -- & -- & $<$0.12 & ... & RT99 \\ (118228) & 1996~TQ$_{66}$ & -- & -- & $<$0.22 & 7.1 & RT99 \\ & 1996~TS$_{66}$ & -- & -- & $<$0.14 & 6.5 & LL06 \\ & & -- & -- & $<$0.16 & ... & RT99 \\ (79360) & 1997~CS$_{29}$ & -- & -- & $<$0.08 & 5.1 & SJ02 \\ & & -- & -- & $<$0.22 & ... & RT99 \\ & 1997~CV$_{29}$ & -- & 15.8 & 0.4 & 7.3 & CK04 \\ (33128) & 1998~BU$_{48}$ & (4.9 or 6.3)~$\pm$~0.1& (9.8 or 12.6)~$\pm$~0.1 & 0.68~$\pm$~0.04 & 7.2 & SJ02 \\ (91133) & 1998~HK$_{151}$ & -- & -- & $<$0.15 & 7.6 & SJ02 \\ (26308) & 1998~SM$_{165}$ & -- & 7.1~$\pm$~0.1 & 0.45~$\pm$~0.03 & 5.8 & SJ02 \\ & & 3.983 & -- & 0.56 & ... & R01 \\ (35671) & 1998~SN$_{165}$ & -- & 8.84 & 0.16~$\pm$~0.01 & 5.8 & LL06 \\ & & 5.03 & -- & 0.15 &... & P02 \\ (33340) & 1998~VG$_{44}$ & -- & -- & $<$0.10 & 6.5 & SJ02 \\ & 1998~XY$_{95}$ & -- & -- & $<$0.1 & 6.2 & CB01 \\ & & 1.31 & -- & $\sim$0.1 & ... & CB01 \\ (26375) & 1999~DE$_{9}$ & $>$12? & -- & $<$0.10 & 4.7 & SJ02 \\ (79983) & 1999~DF$_{9}$ & \textbf{3.3} & \textbf{6.65}/9.2 & 0.40~$\pm$~0.02 & 6.1 & LL06 \\ (40314) & 1999~KR$_{16}$ & (5.840 or 5.929)~$\pm$~0.001& (11.680 or 11.858)~$\pm$~0.002 & 0.18~$\pm$~0.04& 5.8& SJ02 \\ (47171) & 1999~TC$_{36}$ & 6.21 & -- & 0.06 & 4.9 & O03b \\ & & -- & -- & $<$0.07 & ... & LL06 \\ & & -- & -- & $<$0.05 & ... & SJ03 \\ (29981) & 1999~TD$_{10}$ & 7.71~$\pm$~0.02 & -- & 0.65~$\pm$~0.05 & 8.8 & O03b \\ & & -- & 15.45 & 0.65 & ... & R03,C03 \\ & & -- & 15.382 & 0.41~$\pm$~0.08 & ... & M04 \\ & & -- & 15.3833 & 0.53~$\pm$~0.03 & ... & RO5a \\ & & 5.8 & -- & 0.65~$\pm$~0.05 & ... & C00 \\ & 1999~TZ$_{1}$ & -- & 10.438 & $<$0.1 & 9.3 & M08 \\ & & ~5 & -- & 0.15~$\pm$~0.02 & ... & D08 \\ & & 5.211 & 10.422 & 0.06~$\pm$~0.01 &... & Th09 \\ (80806) & 2000~CM$_{105}$ & -- &-- & $<$0.14 & 6.3 & LL06 \\ & 2000~CP$_{104}$ & -- & -- & 0.06 & 6.7 & R08 \\ & 2000~FV$_{53}$ & 3.79 & -- & 0.07~$\pm$~0.02 & 8.2 & TB05 \\ & & -- & 7.5 & 0.07 & ... & TB05 \\ & 2000~CP$_{104}$ & -- & -- & 0.06 & 6.7 & R08 \\ (47932) & 2000~GN$_{171}$ & -- & 8.329~$\pm$~0.05 & 0.61~$\pm$~0.03 & 6.0 & SJ02 \\ & & -- & 8.329~$\pm$~0.05 & 0.60~$\pm$~0.03 & ... & D08 \\ (82075) & 2000~YW$_{134}$ &-- & -- & $<$0.10 & 5.0 & SJ03 \\ (150642) & 2001~CZ$_{31}$ & -- & \textbf{4.71}/5.23 & 0.21~$\pm$~0.02 & 5.7 & LL06 \\ & & -- & -- & $<$0.20 & ... & SJ02 \\ (82158) & 2001~FP$_{185}$ &-- & -- & $<$0.06 & 6.1 & SJ03 \\ (82155) & 2001~FZ$_{173}$ & -- & -- & $<$0.06 & 6.2 & SJ02 \\ & 2001~KD$_{77}$ & -- & -- & $<$0.07 & 5.8 & SJ03 \\ & 2001~QF$_{298}$ &-- &-- & $<$0.12 & 4.7 & SJ03 \\ (139775) & 2001~QG$_{298}$ & 6.89~$\pm$~0.0002& 13.7744~$\pm$~0.0004 & 1.14~$\pm$~0.04 & 7.0 & SJ04 \\ (88611B) & 2001~QT$_{297B}$ & 4.75 & -- & 0.6 & 5.5 & Os03 \\ & & 5.50~$\pm$~0.02 & -- & -- & ... & K06 \\ (42301) & 2001~UR$_{163}$ & -- & -- & $<$0.08 & 4.2 & SJ03 \\ \hline (126154) & 2001~YH$_{140}$ & 6.22/\textbf{8.45~$\pm$~0.05}/12.99 & 12.38/\textbf{16.80}/26.72 & 0.16~$\pm$~0.05& 5.4 & O06 \\ & & -- & 13.25 & 0.21~$\pm$~0.04 & ... & S07 \\ & & 6.19/8.40/\textbf{13.36} & 12.38/16.80/\textbf{26.72} & 0.16~$\pm$~0.05 & ... & Th09 \\ (55565) & 2002~AW$_{197}$ & 6.49/\textbf{8.87~$\pm$~0.01}/13.94/15.82 & 17.74 & 0.04~$\pm$~0.01 & 3.3 & O06 \\ & & 8.78 & 17.56 & 0.04~$\pm$~0.01 & ... & Th09 \\ (95626) & 2002~GP$_{32}$ & $\sim$3.3 & $\sim$6.6 & $>1$ & 6.7 & K06 \\ & & -- & -- & $<$0.03 & ... & S07 \\ (95626) & 2002~GZ$_{32}$ & -- & 5.80~$\pm$~0.03 & 0.15~$\pm$~0.03 & 6.8 & D08 \\ (73480) & 2002~PN$_{34}$ & (4.23 or 5.11)~$\pm$~0.03 &(8.45 or 10.22)~$\pm$~0.06 & 0.18~$\pm$~0.04 & 8.2 & O03b \\ (55636) & 2002~TX$_{300}$ &(\textbf{8.12} or 12.10)~$\pm$~0.08& (\textbf{16.24} or 24.20)~$\pm$~0.08& 0.08~$\pm$~0.02 & 3.3 & SJ03 \\ & & 7.89~$\pm$~0.03 & 15.78 & 0.09~$\pm$~0.08 & ... & O04 \\ & & 4.08 & 8.16 & 0.04~$\pm$~0.01 & ... & Th09 \\ (55637) & 2002~UX$_{25}$ &7.19 or 8.4 & 14.38 & 0.21~$\pm$~0.06 & 3.6 & R05b \\ & & -- & 16.782 & 0.13~$\pm$~0.09 & ... & RO5a \\ & &-- &-- & $<$0.06 &... & SJ03 \\ (555638) & 2002~VE$_{95}$ & 6.76/6.88/7.36/9.47 & -- & 0.08~$\pm$~0.04 & 5.3 & O06 \\ & & -- & -- & $<$0.06 & ... & SJ03 \\ & & 4.90/6.18/\textbf{9.97}/17.23 & 9.80/12.36/\textbf{19.94}/34.46& 0.04~$\pm$~0.01 & ... & Th09\\ (136204) & 2003~WL$_{7}$ & 8.24 & 16.48 & 0.04~$\pm$~0.01 & 8.7 & Th09 \\ & 2005~CB$_{79}$ & 6.76 & 13.52 & 0.13~$\pm$~0.02 & 5.0 & Th09 \\ (145451) & 2005~RM$_{43}$ & 6.71 & 13.42 & 0.04~$\pm$~0.01 & 4.4 & Th09 \\ (145452) & 2005~RN$_{43}$ & 5.62 or 7.32 & 11.24 or 14.64 & 0.04~$\pm$~0.01 & 3.9 & Th09 \\ (145453) & 2005~RR$_{43}$ & 7.87 & 15.74 & 0.06~$\pm$~0.01 & 4.0& Th09 \\ (145486) & 2005~UJ$_{438}$ & 4.16 & 8.32 & 0.11~$\pm$~0.01 & 10.5 & Th09 \\ & 2007~UL$_{126}$ or 2002~KY$_{14}$ & 3.56 or 4.20 & 7.12 or 8.40 & 0.10~$\pm$~0.01 & 9.4 & Th09\\ (120347) & 2004~SB$_{60}$ & 6.09 or 8.01 & 12.18 or 16.02 & 0.03~$\pm$~0.01 & 4.4 & Th09 \\ (144897) & 2004~UX$_{10}$ & 5.68 & 11.36 & 0.08~$\pm$~0.01 & 4.7 & Th09 \\ (119979) & 2002~WC$_{19}$ & -- &-- & $<$0.03 & 5.1 & S07 \\ & 2003~AZ$_{84}$ & 4.32/5.28/6.72/\textbf{6.76~$\pm$~0.01} & -- & 0.14~$\pm$~0.03 & 3.6 &O06 \\ & & -- & 5.72~$\pm$~0.05 & 0.14~$\pm$~0.03 & ... & SJ02 \\ & & 6.79 & 13.58 & 0.10~$\pm$~0.01 & ... &Th09 \\ (120061) & 2003~CO$_{1}$ & 4.51 & 9.02 & 0.06~$\pm$~0.01 & 8.9 & Th09 \\ & 2003~BF$_{91}$ & \textbf{9.1}/7.3 & -- & 1.09~$\pm$~0.25 & 11.7 & TB05 \\ & 2003~BG$_{91}$ & \textbf{4.2}/4.5/4.6/4.9 & -- & 0.18~$\pm$~0.75 & 10.7 & TB05 \\ & 2003~BH$_{91}$ & -- & -- & 0.42 & 11.9 & TB05 \\ & & 2.8 & -- & $<$0.15 & ... & TB05 \\ (120132) & 2003~FY$_{128}$ & -- & -- & $<$0.08 & 5.0 & S07 \\ & & $>$7 & -- & -- & ... & D08 \\ & & 8.54 & 17.08 & 0.12~$\pm$~0.01 & 5.0 & Th09 \\ (120178) & 2003~OP$_{32}$ & 4.845~$\pm$~0.03 & -- & 0.26~$\pm$~0.04 & 4.1 & Ra08 \\ & & 4.05 & 8.10 & 0.10~$\pm$~0.01 & ... & Th09 \\ & 2003~QB$_{112}$ & -- & -- & 0.46 & 7.0 & R08 \\ & 2003~QY$_{90A}$ & 3.4~$\pm$~1.1 & -- & 0.34~$\pm$~0.06 & 6.3 & KO6a \\ & 2003~QY$_{90B}$ & 7.1~$\pm$~2.9 &-- & 0.90~$\pm$~0.18 & 6.3 & K06a \\ & 2003~QY$_{111}$ & -- & -- & 0.60 & 6.6 & R08 \\ (174567) & 2003~MW$_{12}$ & 5.90/7.87 & 11.80/15.74 & 0.06~$\pm$~0.01 & 3.6 & Th09 \\ (84922) & 2003~VS$_{2}$ & 3.71 or 4.39 & 7.42 & 0.17~$\pm$~0.01 & 4.2 & O06,Th09 \\ & & -- & 7.41~$\pm$~0.01 & 0.21~$\pm$~0.02 & ... & S07 \\ (90568) & 2004~GV$_{9}$ & -- & -- & $<$0.1 & 4.0 & S07 \\ & & -- & 5.86~$\pm$~0.03 & 0.16~$\pm$~0.03 & ... & D08 \\ (120348) & 2004~TY$_{364}$ & 5.85~$\pm$~0.01 & 11.7~$\pm$~0.01 & 0.22~$\pm$~0.02 & 4.5 & S07 \\ \hline \end{tabular} \smallskip $^{{a}}$ MPC values. $^{{b}}$ References: B97:~\cite{Buie1997}; D98a:~\cite{Davies1998a}; K00:~\cite{Kern2000}; RT99:~\cite{Romanishin-Tegler1999}; O03b:~\cite{Ortiz2003b}; R07a:~\cite{Rabinowitz2007a}; LL06:~\cite{Lacerda-Luu2006}; D08:~\cite{Dotto2008}; SJ02:~\cite{Sheppard-Jewitt2002}; B89:~\cite{Bus1989}; R03:~\cite{Rousselot2003}; G01:~\cite{Gutierrez2001}; B02:~\cite{Bauer2002}; D07:~\cite{Duffard2008}; L07:~\cite{Lin2007}; S07:~\cite{Sheppard2007}; R08:~\cite{Roe2008}; S02:~\cite{Schaefer2002}; SJ03:~\cite{Sheppard-Jewitt2003}; B03:~\cite{Bauer2003}; O06:~\cite{Ortiz2006}; B92:~\cite{Buie1992}; F01:~\cite{Farnham2001}; T05:~\cite{Tegler2005}; H92:~\cite{Hoffmann1992}; O03a:~\cite{Ortiz2003a}; G05:~\cite{Gaudi2005}; Os03:~\cite{Osip2003}; FD03:~\cite{Farnham-Davies2003}; B06:~\cite{Belskaya2006}; T97:~\cite{Tegler1997}; CB99:~\cite{Collander-Brown1999}; LJ98:~\cite{Luu-Jewitt1998}; H00:~\cite{Hainaut2000}; CK04:~\cite{Chorney-Kavelaars2004}; R01:~\cite{Romanishin2001}; P02:~\cite{Peixinho2002}; CB01:~\cite{Collander-Brown2001}; C03:~\cite{Choi2003}; M04:~\cite{Mueller2004}; R05a:~\cite{Rousselot2005a}; C00:~\cite{Consolmagno2000}; M08:~\cite{Moullet2008}; TB05:~\cite{Trilling-Bernstein2006}; R06:~\cite{Rabinowitz2006}; SJ04:~\cite{Sheppard-Jewitt2004}; K06b:~\cite{Kern2006b}; O04:~\cite{Ortiz2004}; R05b:~\cite{Rousselot2005b}; LJ08:~\cite{Lacerda-Jewitt2008}; Ra08:~\cite{Rabinowitz2008}; K06a:~\cite{Kern2006a}; O07:~\cite{Ortiz2007}; D98b:~\cite{Davies1998b}; D01:~\cite{Davies2001}; TH90:~\cite{Tholen1990}; Th09: \cite{Thirouin2009}. \end{table}