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Table A.1

Characteristics of observational material and the new quality assessment for 119 near-parabolic comets investigated in Papers 1–4 (see references in the last col.).

Comet qosc T Observational arc No Data Heliocentric Data Type Q New rms [arcsec] Ref
name dates of arc span distance span type of GR NG orbital /no of &
[au] [yyyymmdd] [yyyymmdd–yyyymmdd] obs [yr] [au] model model model class res. Notes
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)

Sample A1. Years 1885–2005. 28 near-parabolic comets of qosc< 3.1 au 1 /aori< 150 × 10-6 au-1
C/1885 X1 Fabry 0.642 18860406 18851201–18860719 228 .63 2.29–2.00 full NG 6.5 6.0 2a 3.58/ 390 P1,1
C/1892 Q1 Brooks 0.976 18921228 18920901–18930713 191 .85 2.11–3.04 full NG 6.5 6.0 2a 2.80/ 334 P1,1
C/1952 W1 Mrkos 0.778 19530124 19521210–19530718 36 .60 1.16–2.86 full NG 6.0 5.5 2a 1.08/ 61 P1,2
C/1956 R1 Arend-Roland 0.316 19570408 19561108–19580411 249 1.4 2.83–5.36 full NG 7.0 7.0 1b 1.39/ 458 P1,1
C/1959 Y1 Burnham 0.504 19600320 19600104–19600617 88 .45 1.63–1.81 full NG 6.0 5.0 2b 1.60/ 146 P1,1
C/1974 F1 Lovas 3.011 19750822 19740321–19770911 137 3.5 5.64–7.26 full NG 8.0 8.0 1a 1.08/ 273 P2
C/1978 H1 Meier 1.137 19781111 19780428–19791209 287 1.6 3.00–5.02 full NG 7.5 7.0 1b 1.00/ 565 P1,1
C/1986 P1-A Wilson 1.200 19870420 19860805–19890411 688 2.7 3.64–7.83 full NG 8.5 8.0 1a 1.11/1361 P1
C/1989 Q1 Okazaki-Levy-Rudenko 0.642 19891111 19890824–19891224 231 .33 1.63–1.08 pre+ NG 6.0 5.5 2a 1.30/ 452 P1,1
C/1989 X1 Austin 0.350 19900409 19891206–19900627 281 .56 2.44–1.74 full NG 7.0 6.5 1b 1.28/ 537 P1,1
C/1990 K1 Levy 0.939 19901024 19900521–19920401 678 1.9 2.57–6.36 full NGun 7.5 7.0 1b 0.95/1321 new,1
C/1991 F2 Helin-Lawrence 1.518 19920120 19910223–19920930 114 1.6 4.25–3.52 full NG 7.5 7.0 1b 0.78/ 213 P1
C/1992 J1 Spacewatch 3.007 19930905 19920501–19950202 248 2.8 5.46–5.61 full GR 8.5 1a+ 0.78/ 494 P2,1
C/1993 A1 Mueller 1.938 19940112 19921126–19940817 746 1.4 4.89–3.19 pre+ NGun 7.5 7.5 1a 0.87/1483 new,1
C/1993 Q1 Mueller 0.967 19940326 19930816–19940417 526 1.5 3.33–1.04 pre++ NG 7.5 7.0 1b 0.92/1041 P1,1
C/1996 E1 NEAT 1.359 19960727 19960315–19961012 249 .58 2.31–1.76 pre+ NG 7.0 7.0 1b 0.60/ 492 P1
C/1997 J2 Meunier-Dupouy 3.051 19980310 19970505–19991009 1446 2.4 4.24–6.06 full NG 8.5 8.5 1a+ 0.53/2863 P1,P2
C/1999 Y1 LINEAR 3.091 20010324 19991029–20030719 884 3.7 5.60–7.91 full NG 8.5 8.5 1a+ 0.48/1749 P1,P2,1
C/2001 B1 LINEAR 2.928 20000919 20010122–20020108 162 .96 3.18–5.34 post! GR 7.0 1b 0.56/ 317 new
C/2001 K3 Skiff 3.060 20010422 20010522–20011012 346 .39 3.07–3.49 post GR 6.0 2a 0.67/ 669 P2,1
C/2001 Q4 NEAT 0.962 20040515 20010824–20060818 2681 5.0 10.1–8.82 full NGun 9.0 9.0 1a+ 0.56/5316 P3
1518 5.0 10.1–8.82 DIST 8.5 8.5 1a+ 0.52/3012 P3
C/2002 E2 Snyder-Murakami 1.466 20020221 20020308–20030108 941 .83 1.48–4.18 post NG 7.0 7.0 1b 0.57/1863 P1,1
C/2002 Q5 LINEAR 1.243 20021119 20020828–20030530 609 .75 1.75–2.92 full NG 7.0 1b 0.62/1178 new
C/2002 T7 LINEAR 0.615 20040423 20021012–20060320 4507 3.4 6.91–8.08 full NGun 8.5 8.5 1a+ 0.50/8878 P3
20021012–20040417 3655 1.5 6.91–0.63 PRE 8.0 1a 0.36/7170 P3
20040424–20060320 848 1.9 0.62–8.08 POST 7.0 1b 0.49/1659 new
C/2003 K4 LINEAR 1.024 20041013 20030528–20061117 3658 3.5 6.11–8.30 full NGun 8.5 8.5 1a+ 0.46/7245 new,1
20030528–20061117 1838 3.5 6.11–8.30 DIST 8.0 8.0 1a+ 0.44/3632 new
C/2003 T3 Tabur 1.48 20040429 20031014–20050503 749 1.6 2.96–4.63 full GR 8.0 1a 0.60/1512 new
C/2004 B1 LINEAR 1.602 20060207 20040128–20080824 2057 4.6 7.74–9.15 full NG 9.0 9.0 1a+ 0.43/3758 P1,1
C/2005 E2 McNaught 1.520 20060223 20050312–20080303 1364 3.0 4.42–7.76 full GR 8.5 (8.0) 1a+ 0.43/ 266 new
Sample A2. Years 2006–2010. Complete sample of near-parabolic comets of qosc< 3.1 au and 1 /aori< 150 × 10-6 au-1
C/2006 HW51 Siding Spring 2.266 20060929 20060423–20070807 187 1.3 2.87–4.04 full GR 7.5 1a 0.29/ 356 P4
C/2006 K3 McNaught 2.501 20070313 20060522–20080126 207 1.7 3.95–4.13 pre+ NG 7.5 7.5 1a 0.54/ 402 P4
C/2006 L2 McNaught 1.994 20061120 20060614–20070707 408 1.1 2.74–3.31 full GR 7.5 1a 0.49/ 794 P4
C/2006 OF2 Broughton 2.431 20080915 20060623–20100511 4917 3.9 7.88–6.31 full NG 8.5 8.5 1a+ 0.36/9659 P4
C/2006 P1 McNaught 0.171 20070112 20060807–20070711 341 .93 2.74–3.34 full NG 6.5 6.5 1b 0.25/ 641 P4
C/2006 Q1 McNaught 2.764 20080703 20060820–20101017 2744 4.2 6.83–7.91 full NG 9.0 9.0 1a+ 0.37/5367 P4
C/2006 VZ13 LINEAR 1.015 20070810 20061113–20070814 1173 .73 3.84–1.02 pre++ NGun 6.5 6.5 1b 0.51/2227 P4
20061113–20070630 419 .63 3.84–1.23 PRE 6.0 2a 0.39/ 823 P4,1
C/2007 N3 Lulin 1.212 20090110 20070711–20110101 3951 3.2 6.38–7.83 full NGun 8.5 8.5 1a+ 0.35/7740 P4
20070711–20090108 1594 1.5 6.38–1.21 PRE 8.0 1a 0.33/3132 P4
20090428–20110101 515 1.7 2.00–7.83 POST 7.5 1a 0.38/1004 P4
C/2007 O1 LINEAR 2.877 20070603 20060402–20071113 183 1.6 4.99–2.91 post++ GR 7.5 1a 0.47/ 336 P4
C/2007 Q1 Garradd 3.006 20061211 20070821–20070914 43 24d 3.88–4.02 post! GR 3.5 3a 0.58/ 84 P4
C/2007 Q3 Siding Spring 2.252 20091007 20070825–20110925 1368 4.0 7.64–7.24 full NGun 9.0 9.0 1a+ 0.39/2658 P4
20070825–20091003 568 2.1 7.64–2.25 PRE 8.5 1a+ 0.30/1112 P4
20100608–20111003 177 1.3 3.50–7.24 POST 7.5 1a 0.66/ 342 P4
C/2007 W1 Boattini 0.850 20080624 20071120–20081217 1703 1.2 3.33–2.84 full NGun 7.5 7.5 1a 0.60/3293 new
20071120–20080612 926 .56 3.33–0.88 PRE 7.0 1b 0.49/1771 P4
20080630–20081217 777 .47 0.86–2.84 POST 5.5 2a 0.59/1522 P4
C/2007 W3 LINEAR 1.776 20080602 20071129–20080908 212 0.8 2.89–2.17 pre+ NG 6.5 6.5 1b 0.52/ 413 P4
C/2008 A1 McNaught 1.073 20080929 20080110–20100117 937 2.0 3.73–5.82 full NGun 8.0 8.0 1a 0.44/1852 P4
20080110–20080928 393 .72 3.73–1.07 PRE 6.5 1b 0.28/ 770 P4
20081001–20100117 554 1.3 1.07–5.82 POST 6.5 1b 0.54/1072 P4
C/2008 C1 Chen-Gao 1.262 20080416 20080130–20080528 815 0.3 1.71–1.41 pre++ GR 6.0 2a 0.36/1544 P4,1
C/2008 J6 Hill 2.002 20080410 20080514–20081207 390 0.6 2.04–3.41 post! GR 7.0 1b 0.47/ 751 P4
C/2008 T2 Cardinal 1.202 20090613 20081001–20090909 1345 0.9 3.60–1.78 pre+ GR 7.0 1b 0.38/2609 P4
C/2009 K5 McNaught 1.422 20100430 20090527–20111028 2539 2.4 4.35–6.25 full GRun 8.5 1a+ 0.47/4952 P4
20090527–20100429 820 .92 4.35–1.42 PRE 7.5 1a 0.33/1559 P4
20100430–20111028 1719 1.5 1.42–6.25 POST 8.0 1a 0.47/3357 P4
C/2009 O4 Hill 2.564 20100101 20090730–20091214 785 .38 3.04–2.57 pre! GR 6.5 1b 0.39/1522 P4
C/2009 R1 McNaught 0.405 20100702 20090720–20100629 792 .94 5.06–0.41 pre! NG 7.0 7.0 1b 0.51/1501 P4
C/2010 H1 Garradd 2.745 20100618 20100219–20100702 47 .36 2.82–2.75 full GR 5.0 2b 0.79/ 95 P4
C/2010 X1 Elenin 0.482 20110910 20101210–20110731 2254 .64 4.22–1.04 pre! GRun 7.0 1b 0.47/4438 P4
20101210–20110530 2104 .47 4.22–2.04 GR 6.5 1b 0.46/4135 P4
Sample B. Years 1970–2010. Almost complete sample of 69 near-parabolic comets of qosc ≥ 3.1 au and 1 /aori< 100 × 10-6 au-1;
exceptions: C/2008 S3, C/2009 F4, C/2010 S1 and C/2010 U3, all four are still observable at the end of 2013.
C/1972 L1 Sandage 4.276 19721114 19720609–19741019 150 2.4 4.47–7.01 full GR 7.5 1a 1.40/ 296 P2,1
C/1973 W1 Gibson 3.842 19730809 19731130–19741011 22 .86 3.97–5.29 post GR 6.5 1b 0.72/ 43 P2
C/1974 V1 van den Bergh 6.019 19740807 19741112–19761031 46 2.0 6.06–8.19 post GR 7.0 1b 1.16/ 92 P2
C/1976 D2 Shuster 6.881 19750115 19760225–19780407 57 2.1 7.37–10.1 post GR 7.5 1a 1.00/ 111 P2
C/1976 U1 Lovas 5.857 19760706 19761122–19780210 30 1.2 5.94–7.14 post GR 6.5 1b 1.69/ 60 P2
C/1978 A1 West 5.606 19770721 19760330–19790626 62 3.2 6.57–7.50 full GR 7.5 1a 1.30/ 120 P2
C/1978 G2 McNaught 6.283 19780824 19780412–19800123 7 1.8 6.35–7.20 full GR 6.5 1b 0.82/ 14 P2
C/1979 M3 Torres 4.687 19790715 19780823–19791023 34 1.2 5.34–4.75 full GR 7.0 1b 1.34/ 64 P2
C/1980 E1 Bowell 3.364 19820312 19800211–19861230 203 6.9 7.47–13.9 full NG 8.5 8.5 1a+ 1.06/ 387 P2,1
C/1983 O1 Cernis 3.318 19830721 19830721–19910514 232 7.8 3.32–19.4 post NG 8.5 7.5 1a 1.11/ 461 P2,1
C/1984 W2 Hartley 4.000 19850928 19841117–19880518 54 3.5 4.80–8.52 full NG 7.5 7.5 1a 1.87/ 107 P2
C/1987 F1 Torres 3.625 19870410 19870328–19891227 56 2.7 3.63–8.75 post++ GR 8.0 1a 1.14/ 108 P2
C/1987 H1 Shoemaker 5.458 19861117 19870425–19920104 127 4.7 5.58–13.4 post GR 8.5 1a+ 0.91/ 242 P2,1
C/1987 W3 Jensen-Shoemaker 3.333 19880118 19870924–19900429 34 2.6 3.51–7.77 full GR 7.5 1a 1.22/ 65 P2
C/1988 B1 Shoemaker 5.031 19870320 19880123–19920106 66 4.0 5.55–12.9 post GR 7.5 1a 0.98/ 127 P2
C/1993 F1 Mueller 5.900 19920804 19930319–19950704 111 2.3 6.11–9.30 post GR 7.5 1a 1.11/ 219 P2
C/1993 K1 Shoemaker-Levy 4.849 19940201 19930523–19960127 44 2.9 5.24–7.27 full GR 7.5 1a 1.02/ 86 P2
C/1997 A1 NEAT 3.157 19970619 19970109–19971228 200 .97 3.52–3.65 full GR 7.0 1b 0.55/ 400 new3
C/1997 BA6 Spacewatch 3.436 19991127 19970111–20040915 529 7.7 9.15–13.4 full NG 9.0 8.5 1a+ 0.67/1054 P1,P2,1
C/1999 F1 Catalina 5.787 20020213 19990313–20050828 168 6.5 9.28–10.4 full GR 9.0 1a+ 0.43/ 330 new4
C/1999 F2 Delcanton 4.719 19980823 19980515–20000829 148 2.3 4.79–7.30 post++ GR 8.0 1a 0.73/ 293 P2,1
C/1999 H3 LINEAR 3.501 19990818 19990422–20020320 877 2.9 3.66–8.48 post+ NG 8.5 8.0 1a 0.51/1722 P2
C/1999 J2 LINEAR 7.110 20000406 19990512–20030529 1001 4.1 7.42–10.1 full GR 9.0 1a+ 0.53/1974 P2
C/1999 K5 LINEAR 3.255 20000704 19990515–20020318 250 2.8 5.00–6.36 full GR 8.5 1a+ 0.51/ 492 P2,1
C/1999 N4 LINEAR 5.505 20000523 19980827–20020506 345 3.7 7.14–7.49 full GR 8.0 1a 0.53/ 661 new5
C/1999 S2 McNaught-Watson 6.467 19971122 19990919–20020216 98 2.4 7.84–11.7 post GR 8.0 1a 0.48/ 184 P2
C/1999 U1 Ferris 4.138 19980903 19981222–20000128 208 1.1 4.24–5.89 post GR 7.5 1a 0.51/ 410 P2
C/1999 U4 Catalina-Skiff 4.915 20011028 19990918–20040411 911 4.6 7.55–8.22 full GR 9.0 1a+ 0.78/1807 P2,1
C/2000 A1 Montani 9.743 20000713 20000104–20020320 132 2.2 9.80–10.3 full GR 8.0 1a 0.45/ 264 P2
C/2000 CT54 LINEAR 3.156 20010619 19990321–20040117 210 4.8 7.72–8.52 full NG 8.5 8.5 1a+ 0.75/ 417 P2
C/2000 K1 LINEAR 6.276 19991214 19990518–20010815 333 2.2 6.44–7.51 post+ GR 8.0 1a 0.72/ 663 P2,1
C/2000 O1 Koehn 5.922 20000127 19981214–20010827 65 2.7 6.58–7.15 full GR 8.0 1a 0.81/ 128 P2
C/2000 SV74 LINEAR 3.542 20020430 20000905–20050512 2189 4.7 6.26–9.51 full NG 9.0 9.0 1a+ 0.71/4349 P1,P2
C/2000 Y1 Tubbiolo 7.975 20010202 20001024–20021105 94 2.0 8.00–8.86 full GR 8.0 1a 0.74/ 185 P2
C/2001 C1 LINEAR 5.105 20020328 20000429–20020703 223 2.2 7.24–5.16 pre++ GR 8.0 1a 0.67/ 436 P2
C/2001 G1 LONEOS 8.235 20011009 20001228–20030601 138 2.4 8.41–8.98 full GR 8.0 1a 0.58/ 266 P2,1
C/2001 K5 LINEAR 5.184 20021011 20010430–20041125 3402 3.6 6.50–7.65 full GR 8.5 1a+ 0.66/6736 P2
C/2002 A3 LINEAR 5.151 20020424 20020113–20030624 291 1.4 5.21–6.05 full GR 7.5 1a 0.49/ 573 P2,1
C/2002 J4 NEAT 3.634 20031003 20020504–20061001 232 4.4 5.74–9.38 full GR 9.0 1a+ 0.48/ 451 new6
C/2002 J5 LINEAR 5.727 20030919 20010806–20060305 618 4.6 7.87–8.44 full GR 9.0 1a+ 0.53/1227 P2,1
Comet q osc T Observational arc No Data Heliocentric Data Type Q New rms [arcsec] Ref
name dates of arc span distance span type of GR NG orbital /no of &
[au] [yyyymmdd] [yyyymmdd–yyyymmdd] obs [yr] [au] model model model class res. Notes
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)

C/2002 L9 NEAT 7.033 20040406 20020606–20070111 323 4.6 8.23–9.48 full GR 9.0 1a+ 0.49/ 634 P2,1
C/2002 R3 LONEOS 3.869 20030613 20020904–20040524 1274 1.7 4.57–4.88 full NG 8.0 7.5 1a 0.52/2530 P2,1
C/2003 G1 LINEAR 4.916 20030203 20030408–20041014 1484 1.5 4.94–6.77 post GR 8.0 1a 0.54/2939 P2,1
C/2003 S3 LINEAR 8.129 20030410 20011223–20041023 124 2.8 8.61–8.80 full GR 8.0 1a 0.49/ 242 new7
C/2003 WT42 LINEAR 5.191 20060410 20031030–20080525 2564 4.6 8.26–7.66 full GR 9.0 1a+ 0.53/5057 P2,1
C/2004 P1 NEAT 6.014 20030808 20030511–20050830 151 2.3 6.05–7.91 post++ GR 8.0 1a 0.63/ 298 P2
C/2004 T3 Siding Spring 8.865 20030415 20041012–20060131 109 1.3 9.40–10.6 post GR 7.5 1a 0.44/ 209 P2,1
C/2004 X3 LINEAR 4.402 20050617 20041215–20060331 250 1.3 4.65–4.98 pre+ GR 7.5 1a 0.51/ 487 P2
C/2005 B1 Christensen 3.205 20060223 20040318–20071103 1517 3.6 6.94–5.49 full NG 8.5 8.5 1a+ 0.43/2985 P2
C/2005 EL173 LONEOS 3.886 20070305 20050303–20081117 317 3.7 7.12–6.45 full NG 8.5 8.5 1a+ 0.36/ 632 P2
C/2005 G1 LINEAR 4.961 20060227 20050322–20070311 292 2.0 5.61–5.73 full GR 7.5 1a 0.49/ 573 P2
C/2005 K1 Skiff 3.693 20051121 20050516–20070806 642 2.2 4.06–6.42 full NG 8.0 8.0 1a 0.52/1246 new8
C/2005 L3 McNaught 5.593 20080116 20040716–20130305 5337 8.7 10.3–13.4 full GR 9.0 1a+ 0.49/10503 new
C/2005 Q1 LINEAR 6.408 20050825 20050827–20071016 161 2.1 6.41–8.25 post GR 8.0 1a 0.48/ 309 P2
C/2006 E1 McNaught 6.041 20070106 20060311–20090303 143 3.0 6.39–8.07 full GR 8.0 1a 0.65/ 282 P2
C/2006 K1 McNaught 4.426 20070720 20060517–20090228 417 2.8 5.60–6.41 full GR 8.5 1a+ 0.47/ 829 P2
C/2006 S2 LINEAR 3.161 20070507 20060917–20070716 178 .83 3.86–3.23 full NG 7.0 6.5 1b 0.44/ 346 P2
C/2006 S3 LONEOS 5.131 20120416 20060829–20130729 5214 6.9 14.4–6.22 full GR 9.0 1a+ 0.50/10589 new
C/2006 YC Catalina 4.948 20060911 20061216–20070415 147 0.3 5.00–5.22 post GR 6.0 2a 0.42/ 286 P2
C/2007 D1 LINEAR 8.794 20070619 20070217–20130504 548 6.2 8.82–14.7 full GR 9.0 1a+ 0.45/1061 new
C/2007 JA21 LINEAR 5.368 20061114 20070511–20080827 174 1.3 5.53–7.14 post GR 7.5 1a 0.47/ 342 P2
C/2007 VO53 Spacewatch 4.843 20100426 20071020–20120720 712 4.7 8.31–7.76 full GR 9.0 1a+ 0.43/1396 new
C/2007 Y1 LINEAR 3.341 20080319 20071216–20080503 209 .38 3.46–3.37 full GR 6.0 2a 0.61/ 415 P2
C/2008 FK75 Lemmon-Siding S. 4.511 20100829 20080331–20131008 3704 5.5 8.24–9.34 full GR 9.0 1a+ 0.52/7349 new
C/2008 P1 Garradd 3.896 20090722 20080813–20110204 1373 2.5 4.88–6.08 full GR 8.5 1a+ 0.61/ 415 new
C/2009 P2 Boattini 6.544 20100210 20081001–20110729 503 2.8 7.33–7.53 full GR 8.0 1a 0.51/ 982 new
C/2009 U5 Grauer 6.094 20100622 20091023–20110402 187 1.4 6.32–6.41 pre++ GR 7.5 1a 0.52/ 359 new
C/2010 D3 WISE 4.248 20100903 20100224–20130611 97 3.3 4.54–8.80 full GR 8.0 1a 0.52/ 187 new
C/2010 R1 LINEAR 5.621 20120518 20100904–20130605 1574 2.7 7.15–6.26 full GR 8.5 1a+ 0.43/3106 new

Notes. The sample includes comets with first-quality orbits or NG orbits in MWC 08 and those discovered during the years 2006–2010. The observational material of comets taken for osculating orbit determination is described in Cols. (2) − (8) and (13), whereas the new orbit quality assessment resulting from the osculating orbit based on these data sets is shown in Cols. (10) − (12). The second and third columns show an osculating perihelion distance and perihelion time. The data distribution relative to a perihelion passage is presented in Cols. (7) and (8), where “pre!” (“post!”) means that all observations were taken before (after) perihelion passage; “pre+” (“post+”) means that significantly more pre-perihelion (post-perihelion) measurements were available, and an additional “+” indicates the drastic dominance of pre-perihelion (post-perihelion) measurements in both the number and the time interval. Column (9) shows the type of the best model possible to determine from the full interval of data, where the subscript “un” indicates that the GR and even the NG model determined from the entire interval of data are not satisfactory in the sense of the three criteria described in detail in Papers 1–4. For such an unsatisfactory orbital solution the better model for pre-perihelion motion (that based on some subsample of data) is given in the second line of a given comet, except for comets C/1990 K1 and C/1993 A1, where no individual data treatment has been applied yet. Columns (10) and (11) give the Q for GR and NG models, respectively. The orbital class resulting from the model described in Col. (9) and determined according to the new quality assessment is given in Col. (12). References to publications in which dynamical studies were based on the orbital solution presented here are listed in the last column, where P1 refers to Królikowska & Dybczyński (2010), P2 to Dybczyński & Królikowska (2011), P3 to Królikowska et al. (2012), and P4 to Królikowska & Dybczyński (2013). Many additional notes to individual objects are appended to this table, and the remark “new” indicates solutions that have not been used in P1–P4. Notes in Col. (14):

(1)

many more observations were used here than were used for the MWC 08 orbit or the orbit given at the IAU Minor Planet Center Database (2013) (as of May 2013).

(2)

Significantly fewer observations of C/1952 W1 was available for us than were used for the MWC 08 orbit determination.

(3)

This new solution is based on a data interval three days longer and containing 4 more observations than the orbit analysed in Paper 2.

(4)

Orbit is based on a data interval ~8.5 months longer and containing 3 more observations than that analysed in Paper 2.

(5)

Orbit is based on a data interval ~3 weeks longer and containing 4 more observations than that analysed in Paper 2.

(6)

Orbit is based on a data interval ~1.6 yr longer and containing 4 more observations than that analysed in Paper 2; this results in an increase from quality class 1a to 1a+.

(7)

Orbit is based on a data interval ~two months longer and containing 9 more observations than that analysed in Paper 2.

(8)

Orbit is based on a data interval ~two months longer and containing 2 more observations than that analysed in Paper 2.

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