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Table A.1
Heliocentric orbital elements of osculating orbits for 28 near-parabolic comets described as Sample A1 in Table A.1.
| Comet | Epoch | T | q | e | ω | Ω | i | 1 /aosc |
| [yyyymmdd] | [yyyymmdd.dddddd] | [au] | [ ° ] | [ ° ] | [ ° ] | [10-6 au-1] | ||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
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| Osculating barycentric orbits based on the entire data sets | ||||||||
| C/1885 X1 | 18860404 | 18860406.454383 | 0.64236680 | 1.00027315 | 126.588371 | 37.963059 | 82.628566 | −425.22 |
| ±.000284 | ±.00000206 | ±.00002319 | ±.000120 | ±.000094 | ±.000459 | ±36.10 | ||
| C/1892 Q1 | 18930117 | 18921228.586707 | 0.97595829 | 1.00030422 | 252.651332 | 266.034217 | 24.800982 | −311.72 |
| ±.000228 | ±.00000584 | ±.00002555 | ±.000427 | ±.000181 | ±.000152 | ±26.18 | ||
| C/1952 W1 | 19530123 | 19530124.861090 | 0.77770934 | 1.00005338 | 253.822072 | 343.580012 | 97.186308 | −68.64 |
| ±.000716 | ±.00001008 | ±.00014581 | ±.000446 | ±.000890 | ±.000812 | ±187.49 | ||
| C/1956 R1 | 19561014 | 19570408.028353 | 0.31598046 | 1.00021561 | 308.783333 | 215.856589 | 119.939289 | −682.34 |
| ±.000158 | ±.00000245 | ±.00000369 | ±.000334 | ±.000090 | ±.000075 | ±11.68 | ||
| C/1959 Y1 | 19591218 | 19600320.985705 | 0.50411205 | 1.00022392 | 306.651819 | 252.643185 | 159.600241 | −444.19 |
| ±.001030 | ±.00002431 | ±.00006252 | ±.002691 | ±.001127 | ±.000200 | ±124.03 | ||
| C/1974 F1 | 19750816 | 19750822.181059 | 3.01143760 | 0.99958340 | 261.366389 | 12.368600 | 50.648531 | 138.34 |
| ±.000455 | ±.00001130 | ±.00001388 | ±.000102 | ±.000046 | ±.000058 | ±4.61 | ||
| C/1978 H1 | 19781128 | 19781111.408775 | 1.13650660 | 1.00079425 | 231.401425 | 349.344859 | 43.761723 | −698.85 |
| ±.000236 | ±.00000288 | ±.00000972 | ±.000104 | ±.000060 | ±.000084 | ±8.55 | ||
| C/1986 P1 | 19870505 | 19870420.780693 | 1.19965105 | 1.00031319 | 238.307145 | 111.666056 | 147.119122 | −261.07 |
| ±.000054 | ±.00000087 | ±.00000315 | ±.000054 | ±.000041 | ±.000029 | ±2.63 | ||
| C/1989 Q1 | 19891110 | 19891111.914664 | 0.64236124 | 1.00002499 | 150.564098 | 275.510766 | 90.146682 | −38.91 |
| ±.000138 | ±.00000070 | ±.00001665 | ±.000214 | ±.000275 | ±.000248 | ±25.92 | ||
| C/1989 X1 | 19900419 | 19900409.967504 | 0.34977205 | 1.00021591 | 61.575931 | 75.925341 | 58.956430 | −617.28 |
| ±.000033 | ±.00000053 | ±.00000309 | ±.000097 | ±.000017 | ±.000065 | ±8.83 | ||
| C/1990 K1 | 19901105 | 19901024.684234 | 0.93869530 | 1.00038579 | 242.665901 | 139.364541 | 131.582128 | −410.98 |
| ±.000102 | ±.00000199 | ±.00000931 | ±.000117 | ±.000033 | ±.000062 | ±9.91 | ||
| C/1991 F2 | 19920119 | 19920120.026976 | 1.51771129 | 1.00040745 | 271.159246 | 11.834904 | 95.456595 | −268.47 |
| ±.000122 | ±.00000327 | ±.00000888 | ±.000035 | ±.000028 | ±.000089 | ±5.85 | ||
| C/1992 J1 | 19930910 | 19930905.547819 | 3.00700702 | 0.99996278 | 83.400999 | 203.324053 | 124.318707 | 12.38 |
| ±.000205 | ±.00000103 | ±.00000285 | ±.000042 | ±.000020 | ±.000019 | ±0.95 | ||
| C/1993 A1 | 19921025 | 19940112.948616 | 1.93767483 | 1.00162360 | 130.666753 | 144.719771 | 124.878592 | −837.91 |
| ±.000218 | ±.00000382 | ±.00000420 | ±.000137 | ±.000026 | ±.000020 | ±2.17 | ||
| C/1993 Q1 | 19940329 | 19940326.275403 | 0.96732722 | 1.00022433 | 261.024015 | 193.788651 | 105.025195 | −231.90 |
| ±.000376 | ±.00000951 | ±.00001560 | ±.000964 | ±.000287 | ±.000091 | ±16.12 | ||
| C/1996 E1 | 19960207 | 19960727.353176 | 1.35878564 | 1.00078927 | 81.117630 | 149.841680 | 114.473289 | −580.86 |
| ±.000201 | ±.00000638 | ±.00000621 | ±.000330 | ±.000036 | ±.000027 | ±4.57 | ||
| C/1997 J2 | 19980308 | 19980310.442478 | 3.05109435 | 1.00056658 | 122.674220 | 148.844627 | 91.273390 | −185.70 |
| ±.000111 | ±.00000118 | ±.00000179 | ±.000028 | ±.000006 | ±.000006 | ±0.59 | ||
| C/1999 Y1 | 20010401 | 20010324.103143 | 3.09119483 | 1.00059789 | 184.283022 | 188.883981 | 134.786955 | −193.42 |
| ±.000123 | ±.00000131 | ±.00000265 | ±.000029 | ±.000012 | ±.000012 | ±0.86 | ||
| C/2001 B1 | 20000913 | 20000919.286160 | 2.92799686 | 1.00055047 | 284.814463 | 49.831522 | 104.134304 | −188.00 |
| ±.000728 | ±.00001329 | ±.00000566 | ±.000348 | ±.000013 | ±.000082 | ±1.93 | ||
| C/2001 K3 | 20010522 | 20010422.885552 | 3.06018209 | 0.99905199 | 3.454678 | 289.850306 | 52.026705 | 309.79 |
| ±.002018 | ±.00001221 | ±.00002082 | ±.000569 | ±.000142 | ±.000265 | ±6.80 | ||
| C/2001 Q4 | 20010730 | 20040516.066603 | 0.96136124 | 1.00056075 | 1.213428 | 210.200138 | 99.564090 | −583.29 |
| ±.000023 | ±.00000034 | ±.00000079 | ±.000050 | ±.000008 | ±.000011 | ±0.82 | ||
| C/2002 E2 | 20020215 | 20020221.798122 | 1.46645893 | 1.00076303 | 9.038271 | 244.583534 | 92.545707 | −520.32 |
| ±.000269 | ±.00000133 | ±.00001166 | ±.000227 | ±.000030 | ±.000012 | ±7.95 | ||
| C/2002 Q5 | 20021013 | 20021119.200638 | 1.24296640 | 1.00157379 | 133.306696 | 33.747176 | 149.164203 | −1266.16 |
| ±.000034 | ±.00000022 | ±.00000136 | ±.000043 | ±.000042 | ±.000011 | ±1.10 | ||
| C/2002 T7 | 20020903 | 20040423.145295 | 0.61502190 | 1.00040155 | 157.722612 | 94.847709 | 160.571155 | −652.90 |
| ±.000020 | ±.00000030 | ±.00000021 | ±.000024 | ±.000011 | ±.000006 | ±0.34 | ||
| C/2003 T3 | 20040714 | 20040429.001424 | 1.48107247 | 0.99973997 | 43.773334 | 347.057734 | 50.444430 | 175.57 |
| ±.000045 | ±.00000031 | ±.00000104 | ±.000017 | ±.000017 | ±.000015 | ±0.70 | ||
| C/2003 K4 | 20030501 | 20041013.697058 | 1.02406159 | 1.00043406 | 198.404190 | 18.651630 | 134.247399 | −423.86 |
| ±.000024 | ±.00000046 | ±.00000053 | ±.000036 | ±.000009 | ±.000003 | ±0.52 | ||
| C/2004 B1 | 20060125 | 20060207.887081 | 1.60192826 | 1.00127077 | 327.899930 | 272.801920 | 114.096796 | −793.27 |
| ±.000034 | ±.00000040 | ±.00000112 | ±.000009 | ±.000008 | ±.000010 | ±0.70 | ||
| C/2005 E2 | 20060531 | 20060223.472800 | 1.51957158 | 1.00013668 | 39.966307 | 347.846942 | 16.988159 | −89.94 |
| ±.000058 | ±.00000047 | ±.00000117 | ±.000033 | ±.000032 | ±.000009 | ±0.77 | ||
| Osculating orbits based on DIST or pre-perihelion data sets | ||||||||
| C/2001 Q4 | 20010730 | 20040516.066034 | 0.96137487 | 1.00057161 | 1.212369 | 210.199931 | 99.563785 | −594.58 |
| ±.000057 | ±.00000086 | ±.00000094 | ±.000069 | ±.000015 | ±.000015 | ±0.97 | ||
| C/2002 T7 | 20020903 | 20040423.145323 | 0.61503075 | 1.00040642 | 157.722134 | 94.847872 | 160.571223 | −660.81 |
| ±.000029 | ±.00000039 | ±.00000030 | ±.000033 | ±.000013 | ±.000007 | ±0.49 | ||
| C/2003 K4 | 20030501 | 20041013.706563 | 1.02405532 | 1.00041390 | 198.405628 | 18.651602 | 134.247433 | −404.18 |
| ±.000658 | ±.00000118 | ±.00000162 | ±.000089 | ±.000033 | ±.000008 | ±1.58 | ||
| Osculating orbits based on post-perihelion data sets | ||||||||
| C/2002 T7 | 20040,425 | 20040423.059326 | 0.61458627 | 1.00041363 | 157.729574 | 94.855782 | 160.582686 | −673.03 |
| ±.000109 | ±.00000045 | ±.00001161 | ±.000254 | ±.000121 | ±.000053 | ±18.88 | ||
Notes. The successive columns signify (1) – comet designation, (2) – epoch, i.e. osculation date, (3) – perihelion time [TT], (4) – perihelion distance, (5) – eccentricity, (6) – argument of perihelion (in degrees), equinox 2000.0, (7) – longitude of the ascending node (in degrees), equinox 2000.0, (8) – inclination (in degrees), equinox 2000.0, (9) – inverse semi-major axis in units of 10-6 au-1.
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