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Book III.]
of natural philosophy.
497
16° 01′ 45″; the comet to have been in its perihelion November 24d.11h.52′ P.M. equal time at London, or 13h.8′ at Dantzick, O. S.; and that the latus rectum of the parabola was 410286 such parts as the sun's mean distance from the earth is supposed to contain 100000. And how nearly the places of the comet computed in this orbit agree with the observations, will appear from the annexed table, calculated by Dr. Halley.
| Appar. Time at Dantzick. |
The observed Distances of the Comet from | The observed Places. | The Places computed in the Orb. | |||
| December | 00.°00.′00″ | 00.°00.′00″ | 00.°00.′00″ | |||
| 00.d.00.h.00′ | The Lion's heart | 46.24.20 | Long. ♎ | 7.01.00 | ♎ | 7. 1.29 |
| 3.18.29½ | The Virgin's spike | 22.52.10 | Lat. S. | 21.39. 0 | 21.38.50 | |
| 4.18. 1½ | The Lion's heart | 46. 2.45 | Long. ♎ | 6.15. 0 | ♎ | 6.16. 5 |
| The Virgin's spike | 23.52.40 | Lat. S. | 22.24. 0 | 22.24. 0 | ||
| 7.17.48 | The Lion's heart | 44.48. 0 | Long. ♎ | 3. 6. 0 | ♎ | 3. 7.33 |
| The Virgin's spike | 27.56.40 | Lat. S. | 25.22. 0 | 25.21.40 | ||
| 17.14.43 | The Lion's heart | 53.15.15 | Long. ♌ | 2.56. 0 | ♌ | 2.56. 0 |
| Orion's right shoulder | 45.43.30 | Lat. S. | 49.25. 0 | 49.25. 0 | ||
| 19. 9.25 | Procyon | 35.13.50 | Long. ♊ | 28.40.30 | ♊ | 28.43. 0 |
| Bright star of Whale's jaw | 52.56. 0 | Lat. S. | 45.48. 0 | 45.46. 0 | ||
| 20. 9.53½ | Procyon | 40.49. 0 | Long. ♊ | 13.03. 0 | ♊ | 13. 5. 0 |
| Bright star of Whale's jaw | 40.04. 0 | Lat. S. | 39.54. 0 | 39.53. 0 | ||
| 21. 9. 9½ | Orion's right shoulder | 26.21.25 | Long. ♊ | 2.16. 0 | ♊ | 2.18.30 |
| Bright star of Whale's jaw | 29.28. 0 | Lat. S. | 33.41. 0 | 33.39.40 | ||
| 22. 9. 0 | Orion's right shoulder | 29.47. 0 | Long. ♉ | 24.24. 0 | ♉ | 24.27. 0 |
| Bright star of Whale's jaw | 20.29.30 | Lat. S. | 27.45. 0 | 27.46. 0 | ||
| 26. 7.58 | The bright star of Aries | 23.20. 0 | Long. ♉ | 9. 0. 0 | ♉ | 9. 2.28 |
| Aldebaran | 26.44. 0 | Lat. S. | 12.36. 0 | 12.34.13 | ||
| 27. 6.45 | The bright star of Aries | 20.45. 0 | Long. ♉ | 7. 5.40 | ♉ | 7. 8.45 |
| Aldebaran | 28.10. 0 | Lat. S. | 10.23. 0 | 10.23.13 | ||
| 28. 7.39 | The bright star of Aries | 18.29. 0 | Long. ♉ | 5.24.45 | ♉ | 5.27.52 |
| Palilicium | 29.37. 0 | Lat. S. | 8.22.50 | 8.23.37 | ||
| 31. 6.45 | Andromeda's girdle | 30.48.10 | Long. ♉ | 2. 7.40 | ♉ | 2. 8.20 |
| Palilicium | 32.53.30 | Lat. S. | 4.13. 0 | 4.16.25 | ||
| Jan. 1665 | Andromeda's girdle | 25.11. 0 | Long. ♈ | 28.24.47 | ♈ | 28.24. 0 |
| 7. 7.37½ | Palilicium | 37.12.25 | Lat. N. | 0.54. 0 | 0.53. 0 | |
| 13. 7. 0 | Andromeda's head | 28. 7.10 | Long. ♈ | 27. 6.54 | ♈ | 27. 6.39 |
| Palilicium | 38.55.20 | Lat. N. | 3. 6.50 | 3. 7.40 | ||
| 24. 7.29 | Andromeda's girdle | 20.32.15 | Long. ♈ | 26.29.15 | ♈ | 26.28.50 |
| Palilicium | 40. 5. 0 | Lat. N. | 5.25.50 | 5.26. 0 | ||
| Feb. | Long. ♈ | 27. 4.46 | ♈ | 27.24.55 | ||
| 7. 8.37 | Lat. N. | 7. 3.29 | 7. 3.15 | |||
| 22. 8.46 | Long. ♈ | 28.29.46 | ♈ | 28.29.58 | ||
| Lat. N. | 8.12.36 | 8.10.25 | ||||
| March | Long. ♈ | 29.18.15 | ♈ | 29.18.20 | ||
| 1. 8.16 | Lat. N. | 8.36.26 | 8.36.12 | |||
| 7. 8.37 | Long. ♉ | 0. 2.48 | ♉ | 0. 2.42 | ||
| Lat. N. | 8.56.30 | 8.56.56 | ||||
In February, the beginning of the year 1665, the first star of Aries, which I shall hereafter call γ, was in ♈ 28° 30′ 15″, with 7° 8′ 58″ north
