Original, osculating and future semimajor axes for 26 comets

New, extended version of Table: Non-gravitational Oort spike comets (26 objects)

Reciprocals of semimajor axes are given in units of 10-6 AU-1

Nongravitational parameters A1, A2 and A3 are given in units 10-8 AU/day2

tau shift - time displacement of the maximum of the function g(r) relative to perihelion is given in days

  Name

GR

(1/a)ori
GR

(1/a)osc
epoch [TT]
GR

1/afut
RMSGR

[arcsec]
NG

(1/a)ori
NG

(1/a)osc
epoch [TT]
NG

1/afut
RMSNG

[arcsec]
NG parameters
A1
A2
A3
tau shift
1 C/1885 X1 Fabry
weighting
-2.73 ± 11.28 -692.38 ± 11.51
1886 04 04
-256.73 ± 11.28 3.92 +61.04 ± 17.17 -425.22 ± 36.10
1886 04 04
-103.42 ± 41.33 3.58 2.3366 ± 0.2953
-0.2879 ± 0.1606
2 C/1892 Q1 Brooks
weighting
-57.34 ± 12.52 -482.21 ± 12.66
1893 01 17
-568.73 ± 12.52 3.20 +58.07 ± 50.88 -311.72 ± 26.18
1893 01 17
-486.86 ± 23.28 2.80 2.7787 ± 0.4052
0.1994 ± 0.3855
3 C/1913 Y1 Delavan
weighting
22.14 ± 1.30 -146.67 ± 1.29
1914 11 04
56.41 ± 1.30 2.06 +52.57 ± 4.23 -87.08 ± 8.20
1914 11 04
86.84 ± 4.23 2.00 1.2401 ± 0.1723
4 C/1940 R1 Cunningham
weighting
-60.00 ± 17.66 -1380.06 ± 17.69
1941 01 06
-1630.62 ± 17.67 1.78 +51.66 ± 17.30 -1099.44 ± 29.06
1941 01 06
-1494.22 ± 36.52 1.49 1.4258 ± 0.1553
-0.03924 ± 0.05983
5 C/1946 U1 Bester
weighting
5.72 ± 4.97 -386.73 ± 5.02
1947 02 24
+32.53 ± 4.97 1.53 +23.41 ± 5.25 -358.23 ± 6.69
1947 02 24
+52.21 ± 5.25 1.35 21.953 ± 4.618
6 C/1952 W1 Mrkos
weighting
-140.69 ± 21.69 -456.98 ± 21.67
1953 01 23
-298.66 ± 21.69 1.14 -0.07 ± 85.78 -68.64 ± 187.49
1953 01 23
-41.39 ± 106.94 1.08 3.8399 ± 1.9048
-0.4885 ± 0.1811
7 C/1956 R1 Arend-Roland
weighting
-97.97 ± 5.46 -790.89 ± 5.39
1956 10 14
-603.51 ± 5.47 1.68 +10.37 ± 11.42 -682.34 ± 11.68
1956 10 14
-579.69 ± 9.97 1.39 1.948 ± 0.139
0.1123 ± 0.0223
0.3729 ± 0.0873
7b C/1956 R1 Arend-Roland
non-weighting
-104.38 ± 5.02 -797.31 ± 5.03
1956 10 14
-609.98 ± 5.03 1.68 +7.83 ± 11.19 -684.89 ± 11.18
1956 10 14
-587.32 ± 10.59 1.41 1.856 ± 0.151
0.1190 ± 0.0225
0.3710 ± 0.0926
8 C/1959 Y1 Burnham
weighting
-138.32 ± 15.93 -592.78 ± 15.90
1960 03 07
-589.97 ± 15.94 3.00 +2.09 ± 123.88 +445.88 ± 175.21
1960 03 07
-286.65 ± 33.46 1.60 9.482 ± 1.244
1.276 ± 0.572
0.7251 ± 0.1979
-9.27 ± 1.55
9 C/1978 H1 Meier
weighting
+23.79 ± 2.42 -748.17 ± 2.40
1978 11 28
-1028.68 ± 2.42 1.04 +80.55 ± 10.73 -698.85 ± 8.55
1978 11 28
-1025.19 ± 8.15 1.00 1.292 ± 0.198
0.4151 ± 0.1248
9b C/1978 H1 Meier
non-weighting
+24.52 ± 2.73 -747.44 ± 2.76
1978 11 28
-1027.96 ± 2.73 1.22 +89.23 ± 12.83 -685.36 ± 10.33
1978 11 28
-1018.74 ± 8.09 1.18 1.592 ± 0.249
0.4325 ± 0.1356
10 C/1986 P1 Wilson
weighting
+9.53 ± 0.82 -325.55 ± 0.83
1987 05 05
735.14 ± 0.82 1.35 +42.00 ± 1.97 -261.07 ± 2.63
1987 05 05
767.22 ± 2.35 1.11 1.7501 ± 0.0600
0.00335 ± 0.02714
10b C/1986 P1 Wilson
non-weighting
+0.44 ± 0.99 -335.53 ± 0.99
1987 05 05
725.17 ± 0.99 1.62 +42.33 ± 2.39 -261.05 ± 3.04
1987 05 05
767.22 ± 2.86 1.31 1.7439 ± 0.0659
0.00625 ± 0.03285
11 C/1989 Q1 Okazaki-Levy-Rudenko
weighting
-12.14 ± 14.02 -256.94 ± 13.88
1989 11 10
182.62 ± 14.02 1.84 +42.90 ± 22.24 -38.90 ± 25.92
1989 11 10
+80.49 ± 27.32 1.30 3.396 ± 0.316
0.5059 ± 0.1493
11b C/1989 Q1 Okazaki-Levy-Rudenko
weighting
-6.47 ± 12.66 -251.25 ± 12.83
1989 11 10
188.30 ± 12.66 1.86 +54.58 ± 24.90 -22.63 ± 30.72
1989 11 10
+93.84 ± 33.52 1.46 3.451 ± 0.369
0.5006 ± 0.1783
12 C/1989 X1 Austin
weighting
+22.39 ± 2.07 -652.36 ± 2.07
1990 04 19
-365.62 ± 2.07 1.31 +40.84 ± 9.89 -617.28 ± 8.82
1990 04 19
-368.96 ± 5.42 1.28 2.6749 ± 0.0729
0.03266 ± 0.02210
12b C/1989 X1 Austin
non-weighting
+22.40 ± 2.37 -652.23 ± 2.33
1990 04 19
-365.62 ± 2.37 1.49 +41.71 ± 12.53 -631.73 ± 10.39
1990 04 19
-373.15 ± 6.77 1.49 1.7831 ± 0.0868
0.04025 ± 0.02773
13 C/1990 K1 Levy
weighting
+17.59 ± 1.70 -622.39 ± 1.72
1990 11 05
-857.12 ± 1.71 1.71 +104.71 ± 5.72 -436.59 ± 4.70
1990 11 05
-787.37 ± 2.88 1.05 3.3077 ± 0.0896
0.09735 ± 0.04212
0.34667 ± 0.01289
13b C/1990 K1 Levy
non-weighting
+26.02 ± 1.65 -613.95 ± 1.65
1990 11 05
-848.67 ± 1.65 1.93 +111.44 ± 6.92 -433.65 ± 5.56
1990 11 05
-790.43 ± 3.51 1.21 3.378 ± 0.106
0.1512 ± 0.0517
0.3334 ± 0.0147
14 C/1991 F2 Helin-Lawrence
weighting
+12.53 ± 1.79 -286.86 ± 1.78
1992 01 19
-116.77 ± 1.79 0.83 +14.24 ± 4.03 -268.47 ± 5.85
1992 01 19
-93.14 ± 7.31 0.78 0.6557 ± 0.2299
-0.3401 ± 0.1337
0.07240 ± 0.03789
14b C/1991 F2 Helin-Lawrence
non-weighting
+14.64 ± 2.13 -284.75 ± 2.15
1992 01 19
-114.67 ± 2.13 0.89 +24.90 ± 4.70 -258.30 ± 8.62
1992 01 19
-89.76 ± 12.25 0.86 1.001 ± 0.298
-0.2273 ± 0.2108
0.1071 ± 0.0576
15 C/1993 A1 Mueller
weighting
+11.26 ± 3.99 -888.56 ± 4.04
1992 10 25
-508.85 ± 3.99 2.42 +62.66 ± 2.25 -837.10 ± 2.25
1992 10 25
-408.00 ± 2.42 0.98 16.197 ± 0.164
-2.063 ± 0.163
15b C/1993 A1 Mueller
non-weighting
-19.36 ± 3.88 -919.21 ± 3.92
1992 10 25
-539.43 ± 3.87 2.79 +57.95 ± 2.74 -841.81 ± 2.67
1992 10 25
-406.83 ± 4.16 1.15 16.008 ± 0.189
-2.309 ± 0.230
16 C/1993 Q1 Mueller
weighting
+6.62 ± 2.04 -283.61 ± 2.04
1994 03 29
-62.43 ± 2.04 0.97 +12.24 ± 6.15 -231.90 ± 16.12
1994 03 29
-408.00 ± 23.40 0.92 3.829 ± 0.336
0.8638 ± 0.1276
0.4546 ± 0.1860
16b C/1993 Q1 Mueller
non-weighting
-0.49 ± 3.25 -290.74 ± 3.24
1994 03 29
-69.55 ± 3.27 1.21 -5.33 ± 8.70 -265.27 ± 24.63
1994 03 29
-222.77 ± 27.48 1.19 3.353 ± 0.523
0.8674 ± 0.2068
0.6136 ± 0.2813
17 C/1996 E1 NEAT
weighting
-36.48 ± 3.68 -648.24 ± 3.68
1996 02 07
+361.78 ± 3.67 0.93 +30.15 ± 4.56 -580.86 ± 4.57
1996 02 07
+368.83 ± 5.44 0.60 6.688 ± 0.311
0.6882 ± 0.0935
17b C/1996 E1 NEAT
non-weighting
-43.35 ± 4.05 -655.13 ± 4.04
1996 02 07
+354.93 ± 4.04 1.01 +18.42 ± 6.50 -592.58 ± 6.49
1996 02 07
+374.29 ± 7.89 0.77 6.901 ± 0.418
0.4909 ± 0.1393
18 C/1997 BA6 Spacewatch
weighting
+1.49 ± 0.35 +305.38 ± 0.35
1999 12 08
+371.77 ± 0.35 0.74 +31.83 ± 1.15 +342.47 ± 1.48
1999 12 08
+402.48 ± 1.72 0.67 3340.8 ± 117.7
24.3 ± 54.1
-29.8 ± 11.7
18b C/1997 BA6 Spacewatch
non-weighting
-1.49 ± 0.46 +303.47 ± 0.46
1999 12 08
+369.86 ± 0.46 1.17 +38.42 ± 1.68 +347.67 ± 1.67
1999 12 08
+405.01 ± 1.62 0.89 3800.7 ± 139.6
166.7 ± 59.9
-40.7 ± 15.4
19 C/1997 J2 Meunier-Dupouy
weighting
+38.83 ± 0.57 -201.82 ± 0.56
1998 03 08
-2.72 ± 0.57 0.67 +44.64 ± 0.88 -185.70 ± 0.59
1998 03 08
+14.72 ± 0.91 0.53 292.74 ± 6.92
-50.39 ± 6.35
19b C/1997 J2 Meunier-Dupouy
non-weighting
+36.86 ± 0.57 -203.80 ± 0.57
1998 03 08
-4.69 ± 0.57 0.74 +45.81 ± 1.03 -184.69 ± 0.68
1998 03 08
+15.52 ± 1.00 0.60 293.41 ± 7.65
-48.74 ± 7.12
20 C/1999 Y1 LINEAR
weighting
+42.92 ± 0.88 -196.65 ± 0.88
2001 04 01
+350.42 ± 0.88 0.61 +47.35 ± 0.94 -193.42 ± 0.86
2001 04 01
+345.69 ± 1.46 0.48 296.5 ± 7.6
48.86 ± 10.45
5.305 ± 3.401
20b C/1999 Y1 LINEAR
non-weighting
+19.44 ± 0.78 -220.17 ± 0.78
2001 04 01
+326.90 ± 0.78 0.92 +49.40 ± 1.58 -194.33 ± 1.24
2001 04 01
+342.34 ± 1.95 0.76 294.6 ± 11.5
77.70 ± 15.40
5.593 ± 4.570
21 C/2000 SV74 LINEAR
weighting
+50.23 ± 0.40 -196.65 ± 0.40
2002 05 06
-1397.07 ± 0.40 1.11 +92.31 ± 0.85 -1354.82 ± 0.62
2002 05 06
-54.88 ± 0.60 0.71 6121 ± 80
717.9 ± 60.7
-513.6 ± 21.7
21b C/2000 SV74 LINEAR
non-weighting
+46.66 ± 0.39 -1400.64 ± 0.39
2002 05 06
-89.12 ± 0.39 1.23 +94.77 ± 1.18 -1356.79 ± 0.85
2002 05 06
-60.83 ± 0.75 0.94 6102 ± 110
1247.0 ± 79.4
-327.4 ± 28.5
22 C/2001 Q4 NEAT
weighting
+12.51 ± 0.43 -631.42 ± 0.42
2001 07 30
-731.74 ± 0.43 1.29 +60.87 ± 0.48 -582.97 ± 0.48
2001 07 30
-696.62 ± 0.48 0.63 1.6229 ± 0.0143
0.07695 ± 0.00637
-0.00909 ± 0.00533
22b C/2001 Q4 NEAT
non-weighting
+5.80 ± 0.44 -638.13 ± 0.44
2001 07 30
-738.46 ± 0.44 1.69 +59.59 ± 0.70 -584.25 ± 0.70
2001 07 30
-696.74 ± 0.64 0.80 1.5763 ± 0.0123
0.07022 ± 0.00604
0.02159 ± 0.00492
23 C/2002 E2 Snyder-Murakami
weighting
+42.95 ± 2.31 -566.91 ± 2.26
2002 02 15
-425.73 ± 2.31 0.61 +89.59 ± 12.39 -520.32 ± 7.95
2002 02 15
-441.69 ± 2.79 0.57 2.7802 ± 0.2322
0.8789 ± 0.1940
23b C/2002 E2 Snyder-Murakami
non-weighting
+38.11 ± 2.79 -571.75 ± 2.79
2002 02 15
-430.57 ± 2.79 0.77 +75.00 ± 18.32 -529.25 ± 11.71
2002 02 15
-445.15 ± 3.80 0.75 2.8445 ± 0.3431
0.7228 ± 0.2878
24 C/2002 T7 LINEAR
weighting
-13.84 ± 0.16 -692.45 ± 0.16
2002 09 03
-653.57 ± 0.16 0.61 +20.72 ± 0.39 -657.85 ± 0.39
2002 09 03
-660.08 ± 1.05 0.58 1.0077 ± 0.0147
0.12460 ± 0.00358
-0.17847 ± 0.00478
24b C/2002 T7 LINEAR
non-weighting
-24.42 ± 0.24 -703.04 ± 0.24
2002 09 03
-664.14 ± 0.24 1.21 +19.73 ± 0.39 -658.83 ± 0.40
2002 09 03
-650.86 ± 1.03 0.64 1.1752 ± 0.0139
0.09362 ± 0.00363
-0.20478 ± 0.00428
25 C/2003 K4 LINEAR
weighting
+32.08 ± 0.16 -423.17 ± 0.16
2003 05 01
-186.23 ± 0.16 0.62 +30.73 ± 0.54 -424.53 ± 0.54
2003 05 01
-126.41 ± 0.81 0.54 0.75404 ± 0.01878
-0.39375 ± 0.00615
-0.09744 ± 0.00473
25b C/2003 K4 LINEAR
non-weighting
+40.36 ± 0.17 -414.88 ± 0.17
2003 05 01
-177.95 ± 0.17 0.78 +34.73 ± 0.63 -420.52 ± 0.62
2003 05 01
-130.71 ± 0.77 0.63 0.75596 ± 0.02009
-0.34021 ± 0.00626
-0.07501 ± 0.00452
26 C/2004 B1 LINEAR
weighting
+34.64 ± 0.20 -808.68 ± 0.19
2006 01 25
-481.63 ± 0.20 0.53 +35.55 ± 0.72 -793.27 ± 0.70
2006 01 25
-460.98 ± 0.68 0.43 0.91312 ± 0.03339
-0.35032 ± 0.01775
-0.23725 ± 0.00683
26b C/2004 B1 LINEAR
non-weighting
+34.66 ± 0.22 -808.53 ± 0.22
2006 01 25
-481.61 ± 0.22 0.68 +38.01 ± 0.81 -790.86 ± 0.87
2006 01 25
-460.07 ± 0.81 0.58 1.0005 ± 0.0430
-0.33538 ± 0.02127
-0.20151 ± 0.00767