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Table 5

Statistics of astrometric residuals.

Code bib. Reference n/N μ α μ δ rmsα rmsδ Time-span
Observations in Strugnell & Taylor (1990)
13 Chernykh & Chernykh (1971) 2/2 0.5854 –1.0816 1.4508 1.1405 1968–1968
34 Mulholland & Shelus (1980) 6/8 0.4136 –0.0970 0.7573 0.4710 1975–1976
Observations in Bec-Borsenberger & Rocher (1982)
51 Pickering (1904b) 0/1 – – – – 1904–1904*
52 Pickering (1904a) 0/1 – – – – 1904–1904*
53 Perrine (1904) 5/5 –0.4413 –0.1065 0.9992 0.5282 1904–1904*
54 Albrecht & Smitil (1909) 11/11 –2.3742 1.3441 2.5230 2.1368 1905–1905*
55 Perrine et al. (1909) 10/10 –1.0285 0.0567 1.6793 0.7945 1906–1908*
56 MNRAS68-1908 (1908) 15/15 –0.1002 1.2292 0.6667 1.4391 1907–1907*
57 MNRAS69-1909 (1909) 23/23 0.6177 0.8746 0.8672 1.3982 1908–1908*
58 MNRAS70-1910 (1910) 12/12 0.7487 1.1878 1.3078 1.5321 1909–1910*
59 MNRAS71-1911 (1911) 7/7 1.3857 1.4758 1.8302 1.6171 1910–1910*
60 Barnard (1913) 2/2 0.4634 –0.4752 1.4150 0.5778 1912–1913*
61 Barnard (1914) 2/2 –0.9066 –0.5416 1.0271 0.5457 1913–1913*
62 van Biesbroeck (1922) 0/5 – – – – 1922–1922*
63 Richmond & Nicholson (1943) 1/1 –0.5528 0.0497 0.5528 0.0497 1940–1940
64 van Biesbroeck (1944) 8/8 1.4202 –0.0666 1.8178 0.3589 1942–1942
65 Bobone (1953) 7/7 –0.7151 –0.0210 1.1774 0.3068 1952–1952
66 van Biesbroeck (1957) 13/14 –0.2220 0.5337 0.9805 0.7550 1955–1955
67 van Biesbroeck (1958) 8/8 –0.6959 1.1637 0.9347 1.3354 1957–1957
68 Roemer & Lloyd (1966) 2/2 1.0106 0.3198 1.0171 0.3413 1960–1960
69 van Biesbroeck et al. (1976) 3/4 –1.2365 0.7450 2.6553 0.7780 1969–1969
71 Veillet & Debehogne (1981) 21/21 0.5240 –0.1129 0.6780 0.5557 1981–1981
Debehogne (1981)
72 Smith et al. (1981) 8/8 0.3358 –1.5206 0.8243 1.6113 1981–1981
73 Debehogne H. priv. comm. 1981 18/18 –0.2414 –0.6121 0.5502 0.8142 1982–1982
74 Dourneau et al. (1991) 5/5 0.1846 –0.2148 0.2326 0.3068 1989–1989
Observations in NSDC
102 Ledovskaya et al. (1999) 9/9 0.0327 –0.3741 0.0795 0.3846 1998–1998*
103 Stone & Harris (2000) 38/38 –0.0901 –0.0090 0.2336 0.3486 1998–1999
104 Stone (2000) 19/19 0.0158 0.0829 0.2770 0.2154 1999–1999
105 Derek Jones comm to NSDC 7/7 –0.0385 0.0701 0.1007 0.1803 1995–1997
106 Veiga et al. (2000) 60/60 –0.0745 0.2488 0.1828 0.3986 1995–1997
107 MPC comm. (2001–2002a) 22/22 –0.2601 0.2854 0.4536 0.4563 2000–2000*
108 MPC comm. (2001–2002b) 9/9 –0.3174 0.5602 0.4106 0.5755 2000–2000*
109 MPC comm. (2001–2002c) 6/6 –0.0137 –0.0085 0.0318 0.0306 2001–2001*
110 MPC comm. (2001–2002d) 18/18 0.0451 0.1962 0.4876 0.2463 2001–2001*
111 MPC comm. (2001–2002e) 3/3 –0.4311 –0.1218 0.4765 0.3222 2001–2001
113 Comm. to NSDC (2002) 3/3 0.5031 –0.7376 0.7787 0.7420 2002–2002*
114 MPC comm. (2002) 3/3 –0.0223 0.1123 0.0453 0.1131 2002–2002*
115 Comm. to NSDC (2003a) 22/22 0.0162 –0.4346 0.6929 1.2151 2002–2003*
116 Comm. to NSDC (2003b) 38/38 0.0143 0.1562 1.1432 1.0772 1998–2003*
117 Comm. to NSDC (2003c) 16/16 –0.0630 0.0440 0.0857 0.0564 2003–2003*
118 Fienga et al. (2002) 162/162 0.0720 –0.1076 0.1855 0.2209 1998–1999*
120 Comm. to NSDC (2003d) 2/2 0.0209 –0.0003 0.0423 0.0036 2003–2003*
121 Comm. to NSDC (2003–2004) 34/34 –0.1025 0.0402 0.3632 0.1568 2003–2003*
122 Comm. to NSDC (2004) 5/5 –0.0698 –0.0109 0.0772 0.0693 2004–2004*
125 Peng & Zhang (2006) 210/210 0.0269 –0.0163 0.0592 0.0575 2003–2005*
127 Qiao et al. (2006) 115/115 –0.0074 0.0046 0.1191 0.1508 2003–2004*
137 MPC 70653 WISE Observations 5/5 –0.0593 0.4536 0.1572 0.5128 2010–2010
139 Qiao et al. (2011) 1173/1173 –0.0725 0.0251 0.1486 0.1099 2005–2008*
200 MPC24160 4/4 –0.6614 –0.0325 1.3239 0.7528 1994–1994
201 MPC38967 8/8 –0.1696 –0.0770 0.1981 0.0933 1999–1999
202 MPC40910 38/39 0.6800 –0.1226 1.2349 1.1008 1995–1998
203 MPC40911 17/17 –0.1276 0.0833 0.3540 0.3465 1998–2000
204 MPC41261 3/3 –0.1428 0.3942 0.1443 0.3948 2000–2000
205 MPC41449 10/10 –0.1008 0.1553 0.3738 0.3201 2000–2000
206 MPC41830 3/3 –0.2477 0.3817 0.2626 0.4060 2000–2000
207 MPC43757 8/8 0.3832 0.8383 1.3833 1.3944 2001–2001*
208 MPC44182 11/11 0.4054 –0.1473 0.6700 0.3502 2001–2001*
209 MPC46761 6/6 0.0458 0.0652 0.0739 0.0988 2002–2002*
210 MPC50594 7/7 0.0202 0.0621 0.0927 0.1233 2004–2004*
211 MPC51181 3/3 0.0779 0.0451 0.0801 0.0453 2004–2004
212 MPC51367 6/6 0.0582 0.0325 0.0659 0.0418 2004–2004
213 MPC51497 4/4 0.0246 0.0406 0.0403 0.0412 2004–2004*
215 MPC53171 3/3 –0.1010 –0.0407 0.1257 0.0479 1996–1996*
216 MPC53464 19/19 –0.0555 –0.0195 0.1914 0.1828 2004–2005
217 MPC53629 8/8 –0.0015 –0.0514 0.1990 0.1518 2005–2005
218 MPC53948 36/36 0.0253 –0.0210 0.2774 0.2015 2004–2005*
219 MPC54163 22/22 0.0228 0.0053 0.2475 0.1784 2004–2005*
220 MPC55508 5/5 –0.0147 0.8286 0.2316 0.8815 2005–2005*
221 MPC55975 6/6 0.3247 –0.0217 0.7387 0.2284 2005–2005*
222 MPC55976 72/72 0.0081 0.0544 0.2003 0.2815 2005–2006*
223 MPC56148 34/34 0.0053 0.0140 0.2814 0.2085 2006–2006*
224 MPC56608 33/33 0.1470 –0.0966 0.2252 0.1823 2006–2006*
225 MPC56609 1/1 0.2920 –0.2526 0.2920 0.2526 2006–2006*
226 MPC57946 7/7 –0.5558 0.6623 0.8614 1.5035 2006–2006*
227 MPC57947 3/3 1.5135 1.2146 1.9990 1.2276 2006–2006*
228 MPC58097 10/10 0.0283 –0.1981 0.2801 0.4356 2006–2006*
229 MPC58523 12/12 0.0619 –0.0699 0.5181 0.2336 2006–2006*
230 MPC58764 34/34 0.2153 0.0840 0.4006 0.6965 2007–2007*
231 MPC59029 9/9 –0.0607 0.1404 0.2501 0.5894 2007–2007*
232 MPC59305 23/23 0.1357 0.0140 0.2595 0.2105 2007–2007*
233 MPC59581 18/18 0.1645 –0.0935 0.2798 0.1918 2007–2007*
234 MPC59860 17/17 0.2167 –0.1131 0.3165 0.2162 2007–2007*
235 MPC60086 14/14 0.0379 0.0344 0.3345 0.2506 2007–2007*
236 MPC61685 1/1 1.2399 –0.2102 1.2399 0.2102 2008–2008*
237 MPC61686 3/3 0.3235 –0.1693 0.4012 0.2109 2008–2008*
238 MPC61978 30/30 –0.0142 0.0457 0.2321 0.2438 2008–2008*
239 MPC62254 20/20 0.0054 0.1463 0.3018 0.4611 2008–2008*
240 MPC62566 23/23 0.0406 –0.0538 0.2190 0.2306 2008–2008*
241 MPC62864 8/8 0.2757 0.1044 0.4027 0.1738 2008–2008
242 MPC62865 2/2 0.4133 –0.0853 0.4201 0.0967 2008–2008
243 MPC63123 14/14 0.3811 –0.2029 0.4459 0.2786 2008–2008
246 MPC63584 3/3 0.2071 0.2070 0.3299 0.2858 2008–2008
247 MPC64482 4/4 –0.0818 0.3491 0.4814 0.5066 2008–2008*
248 MPC64749 6/6 0.0161 0.5311 0.2223 0.6249 2008–2008*
249 MPC65036 9/9 0.0818 0.0208 0.1599 0.0503 2009–2009*
250 MPC65325 4/4 –0.5536 0.2077 0.6222 0.2978 2009–2009
251 MPC65628 15/15 0.1077 –0.0344 0.2934 0.2110 2009–2009
252 MPC65920 16/16 –0.1531 0.3044 0.5297 0.8047 2009–2009*
253 MPC66188 2/2 –0.5985 0.0678 0.6111 0.3130 2009–2009
254 MPC66450 6/6 0.0406 0.0375 0.2085 0.1453 2009–2009*
255 MPC66686 4/4 0.1597 –0.1154 0.2672 0.2136 2009–2009
257 MPC68212 2/2 –0.0147 –0.1053 0.0530 0.1070 2010–2010*
258 MPC68669 6/6 –0.0511 0.0803 0.2327 0.1850 2010–2010*
259 MPC69202 30/30 0.0601 0.3838 0.3508 0.8498 2010–2010*
260 MPC69724 21/21 0.6952 0.9287 0.9956 1.3787 2010–2010*
261 MPC70193 4/4 0.0733 0.1649 0.1064 0.1968 2010–2010*
262 MPC71062 1/1 0.0851 0.1336 0.0851 0.1336 2010–2010*
263 MPC73667 2/2 –0.0898 0.0278 0.1128 0.0305 2011–2011*
264 MPC74025 21/21 0.0002 –0.0429 0.1241 0.1678 2011–2011*
267 MPC74380 39/39 0.2880 0.1457 0.5760 0.5211 2011–2011*
268 MPC74811 29/29 0.1555 0.0254 0.3181 0.1771 2011–2011*
270 MPC75400 3/3 0.2502 0.0030 0.2608 0.0727 2011–2011*
271 MPC75593 9/9 0.3081 –0.0401 0.3166 0.1026 2011–2011*
272 MPC75849 6/6 0.0941 –0.2012 0.1434 0.2334 2011–2011*
Other observations
300 Pickering (1908) 6/42 0.2576 0.9413 1.9223 3.0575 1898–1902*
301 U.S.N.O (2012) 205/205 0.0201 0.0420 0.2786 0.3851 2000–2011*
350 Voyager data – Jacobson (1998) 8/8 –6.6018 –1.1079 6.6194 1.2836 1981–1981
Jacobson (1998)
351 Cassini data 223/223 0.6304 –0.1291 2.5353 1.5782 2004–2004
Tajeddine R., privat comm. 2012
500 Minor Planet Center (2011) 83/83 0.1518 0.1092 0.4838 0.3341 1907–2012*

Notes. Code bib. is the bibliographic code used in the catalogue, n is the number of accepted observations for each reference, N is the total number of observations of the reference, μα and μδ are the mean of the residuals for each coordinate in arcsec, rmsα and rmsδ are the root mean squares for each coordinate in arcsec, and the time-span is also indicated. The symbol * indicates that the observations have been corrected for bias.

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