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C/1618 W1 is a comet that was visible to the naked eye in 1618 and 1619. It is classified as a "Great Comet" due to its extraordinary brightness and its long tail, measuring up to 90° long.
Discovery and observation, Scientific evaluation & Orbit
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| C/1618 W1 | Alternative designations | 1618 II | 1.00 | infobox |
| C/1618 W1 | Apparent magnitude | 0–1 (1618 apparition) | 1.00 | infobox |
| C/1618 W1 | Argument of periapsis | 287.436° | 1.00 | infobox |
| C/1618 W1 | Discovery date | 25 November 1618 | 1.00 | infobox |
| C/1618 W1 | Eccentricity | ~1.000 | 1.00 | infobox |
| C/1618 W1 | Epoch | 8 November 1618 (JD 2312334.351) | 1.00 | infobox |
| C/1618 W1 | Inclination | 37.196° | 1.00 | infobox |
| C/1618 W1 | Last perihelion | 8 November 1618 | 1.00 | infobox |
| C/1618 W1 | Longitude of ascending node | 81.001° | 1.00 | infobox |
| C/1618 W1 | Max. orbital speed | ~67 km/s | 1.00 | infobox |
| C/1618 W1 | Number of observations | 42 | 1.00 | infobox |
| C/1618 W1 | Observation arc | 53 days | 1.00 | infobox |
| C/1618 W1 | Perihelion | 0.38954 AU | 1.00 | infobox |
| C/1618 W1 | is a | comet that was visible to the naked eye in 1618 and 1619 | 0.90 | text |
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