Table A.1
Small-perihelion Oort spike comets discovered in 1885–1900 and 1951–2012 and only with pure gravitational orbits determinable.
Comet | qosc | T | Observational arc | No. | Data | Heliocentric | Data | Q* | New | rms [arcsec] | Ref | Data | 1∕aori | 1∕afut |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
name | dates | of | arc span | distance span | type | GR model | orbital | /no of | and | selec | [10−6au−1] | |||
[au] | [yyyymmdd] | [yyyymmdd–yyyymmdd] | obs | [yr] | [au] | class | res. | Notes | tion | |||||
[1] | [2] | [3] | [4] | [5] | [6] | [7] | [8] | [9] | [10] | [11] | [12] | [13] | [14] | [15] |
C/1886 T1 | 0.663 a5 | 18861216 | 18861007–18870617 | 320 | 0.693 | 1.50–3.01 | full | 6.0 | 2a | 3.80/546 | new | STD | 50.5 ± 20.4 | 15.2 ± 20.4 |
Barnard-Hartwig | –18870531 | 62 | 0.646 | 1.50–2.80 | GR | 1B | MPC | 46.2 | 10.8 | |||||
C/1890 F1 | 1.908 z6 | 18900602 | 18900322–18920205 | 908 | 1.87 | 2.10 6.56 | full | 7.5 | 1a | 2.61/1644 | PB | STD | 54.37± 3.42 | 93.71± 3.71 |
Brooks | 899 | GR | MPC | 89.36 | 125.71 | |||||||||
C/1966 T1 | 0.419 a1 | 19670120 | 19661017–19670208 | 50 | 0.312 | 1.49–0.628 | pre+ | 5.5 | 2a | 1.68/ 97 | new | STD | 88.3 ± 37.0 | −850.3± 37.0 |
Rudnicki | 46 | GR | 2A | MPC | 49.2 | −889.9 |
Notes. The observational material for the determination of osculating orbits is described in Cols. [4]−[8] and [11], and Col. [9] gives Q* (see KD13) for the GR model of motion, and the resulting orbit quality assessment (orbital class) is given in Col. [10]. 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) the perihelion passage; “pre+” (“post+”) means that considerablymore pre-perihelion (post-perihelion) measurements were available, and additional “+” means a drastic dominance of data before (after) perihelion. Column [12] shows references, where “new” means solutions obtained here, MPC – taken from the Minor Planet Center https://www.minorplanetcenter.net/db_search, NK – Nakano Notes, PB – Królikowska & Dybczyński (2016). Values of 1∕aori and 1∕afut represent original and future semimajor axes of barycentric orbits at the distance of 250 au before entering and after leaving the inner part of the Solar System, respectively. The full table is available at the CDS.
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