Table A.1
Collected observational material for the sample of 38 LPCs discovered during 1901–1950 (Cols. (4)–(7)).
O b s e r v a t i o n a l m a t e r i a l | M W 08 | |||||||
Comet | qosc | T | Observational arc | No. | Data | Heliocentric | Observational arc | No. |
name | dates | of | arc span | distance span | dates | of | ||
[AU] | [yyyymmdd] | [yyyymmdd–yyyymmdd] | obs | [yr] | [AU] | [yyyymmdd–yyyymmdd] | obs | |
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
|
||||||||
C/1902 R1 | 0.401 | 19021124 | 19020901–19030331 | 1491 | 0.58 | 1.79–2.44 | 19020901–19030331 | 1000 |
C/1902 X1 | 2.77 | 19030323 | 19021202–19030627 | 735 | 0.57 | 3.00–2.94 | 19021204–19030624 | 191 |
C/1903 M1 | 0.330 | 19030828 | 19030629–19031023 | 653 | 0.36 | 1.52–1.36 | 19030622–19031023 | 231 |
C/1904 Y1 | 1.88 | 19041103 | 19041218–19050502 post | 164 | 0.37 | 1.96–2.86 | 19041218–19050502 | 48 |
C/1906 B1 | 1.30 | 19051222 | 19050723–19060425 post+ | 267 | 0.76 | 2.50–2.18 | 19050723–19060424 | 186* |
C/1906 E1 | 3.35 | 19051018 | 19040110–19070704** post+ | 462 | 3.48 | 6.53–6.38 | 19040110–19070704 | 500 |
C/1907 E1 | 2.05 | 19070319 | 19070309–19080226 | 178 | 0.97 | 2.05–4.29 | 19070309–19080226 | 67 |
C/1911 S3 | 0.303 | 19111010 | 19110929–191202171 | 162 | 0.38 | 0.46–2.55 | 19110930–19120217 | 66 |
C/1912 R1 | 0.716 | 19121005 | 19120911–191305262 | 935 | 0.71 | 0.86–3.59 | 19120910–19130526 | 170 |
C/1913 Y1 | 1.10 | 19141026 | 19131218–191509073 | 1006 | 1.72 | 4.24–4.26 | 19131218–19150907 | 339 |
C/1914 F1 | 1.20 | 19140604 | 19140330–19141214 | 285 | 0.48 | 1.57–2.94 | 19140330–19141214 | 62 |
C/1914 M1 | 3.75 | 19140730 | 19140624–191508104 | 70 | 1.13 | 3.76–4.96 | 19140628–19150715 | 39 |
C/1916 G1 | 1.69 | 19170617 | 19160407–19180129 | 471 | 1.81 | 5.16–5.74 | 19160404–19180129 | 186 |
C/1919 Q2 | 1.12 | 19191207 | 19190825–19200203 | 276 | 0.44 | 1.95–1.75 | 19190825–19200203 | 87 |
C/1921 E1 | 1.01 | 19210510 | 19210315–19211126 | 568 | 0.70 | 1.74–2.25 | 19210315–19211126 | 146 |
C/1922 U1 | 2.26 | 19221026 | 19221022–19240128 post+ | 482 | 1.27 | 2.26–5.22 | 19221022–19240128 | 185 |
C/1925 F1 | 4.18 | 19250906 | 19250323–192703045 | 262 | 1.95 | 4.41–6.07 | 19250323–19270304 | 59 |
C/1925 G1 | 1.11 | 19250401 | 19250405–192605026 post | 598 | 1.07 | 1.11–5.15 | 19250405–19260502 | 201 |
C/1925 W1 | 1.57 | 19251002 | 19251117–192606107 post | 342 | 0.56 | 1.57–3.47 | 19251117–19260531 | 129 |
C/1932 M1 | 1.65 | 19320924 | 19320621–193301208 | 187 | 0.58 | 2.06–2.25 | 19320621–19321230 | 48 |
C/1932 M2 | 2.31 | 19320921 | 19310814–19340719 | 328 | 2.93 | 4.78–6.83 | 19310814–19340719 | 161 |
C/1935 Q1 | 4.04 | 19360511 | 19350703–193711129 | 131 | 2.30 | 4.83–6.06 | 19350703–19371110 | 107 |
C/1937 C1 | 1.73 | 19370620 | 19370204–19371028 | 417 | 0.72 | 2.44–2.40 | 19370204–19371028 | 136 |
C/1937 N1 | 0.863 | 19370815 | 19370704–19371230 | 413 | 0.49 | 1.14–2.36 | 19370704–19371230 | 212 |
C/1940 R2 | 0.368 | 19410116 | 19400825–19410401*** | 370 | 2.71–1.67 | 19400919–19410617 | 189 | |
C/1940 S1 | 1.06 | 19400815 | 19401004–1941010310 post | 36 | 0.25 | 1.34–2.37 | 19401004–19410102 | 19 |
C/1941 K1 | 0.875 | 19410903 | 19410604–19420218 | 461 | 0.71 | 1.76–2.74 | 19410604–19420218 | 318 |
C/1942 C1 | 1.44 | 19420430 | 19411228–19430108 | 224 | 1.03 | 2.22–3.51 | 19411228–19430108 | 228 |
C/1942 C2 | 4.11 | 19420927 | 19420212–1943031111 | 47 | 1.07 | 4.53–4.35 | 19420212–19430309 | 35 |
C/1944 K2 | 2.23 | 19440717 | 19440601–19450811 | 36 | 1.19 | 2.29–4.66 | 19440601–19450811 | 25 |
C/1946 C1 | 1.72 | 19460413 | 19460129–1947080912 | 485 | 1.52 | 1.97–5.56 | 19460202–19470809 | 183 |
C/1946 P1 | 1.14 | 19461026 | 19460813–1948112313 | 144 | 2.28 | 1.62–8.17 | 19460816–19481123 | 101 |
C/1946 U1 | 2.41 | 19470207 | 19461102–19481002 | 141 | 1.92 | 2.64–6.32 | 19461102–19481002 | 97 |
C/1947 S1 | 0.748 | 19480216 | 19470928–19490206 | 325 | 1.36 | 2.45–4.89 | 19470928–19490206 | 123 |
C/1947 Y1 | 1.50 | 19480216 | 19480118–19481130 | 124 | 0.87 | 1.59–3.85 | 19480118–19481130 | 78 |
C/1948 E1 | 2.11 | 19480515 | 19480313–19500209 | 247 | 1.91 | 2.36–6.65 | 19480313–19500209 | 95 |
C/1948 T1 | 3.26 | 19470904 | 19481007–19500817 post | 26 | 1.86 | 4.89–9.38 | 19481007–19500817 | 26 |
C/1950 K1 | 2.57 | 19510115 | 19500527–19530119 | 254 | 2.65 | 3.53–7.26 | 19500527–19530119 | 38 |
Notes. The sample includes all comets that in MW08 have 1 /aori< 130 × 10-6 AU-1 and orbits of first- or second-class. Columns (2)–(4) show the osculating perihelion distance, perihelion time, and interval of collected data. The data distribution relative to perihelion passage is shown by additional descriptions: “post” in Col. (4) when all observations were taken after perihelion passage, and “post+” when the number of data taken after perihelion passage dominate. Columns (8)–(9) describe the positional data that formed the basis for determining the orbits presented in MW08. Comets with detectable NG effects are indicated here by rows in light grey shading (see also Table C.1). Notes to cases where we found in literature observations outside the data interval given in MW08 (in Col. (8) of this table):
One observation of poor quality was taken on 1911 September 29. Although a hundred times less weight in comparison to good-quality observations was applied, this measurement was rejected in the selecting and weighting.
One observation was taken on 1912 May 09, two in 1912 September 09, but all three were rejected as incorrect; a single observation from 1912 September 10 was also rejected.
One observation taken on 1914 June 24 (well fitted in right ascension and declination) and two observations taken on 1915 August 10 (only in declination) were also used here to determine the orbit.
One observation was taken on 1925 April 05 and was included in the orbit determination only in right ascension.
Two observations were taken on 1926 June 09 and 10 and were included in the orbit determination only in right ascension and declination, respectively.
One observation taken on 1933 January 20 was included in the orbit determination in declination.
One observation taken on 1937 November 12 was included in declination in the orbit determination.
Three observations were taken on 1941 January 03 – these were included in the orbit determination only in right ascension.
Two observations were taken on 1946 August 13; the first was included only in declination, and the second in both coordinates. Other notes
This is the unique case where a large set of observations is available at IAU Minor Planet Center Database. There are 239 positional observations, two of which are prediscovery observations found by Gary W. Kronk; they extend the data interval by about six months (see also Sect. 2).
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