An Extract of Mr. Flamstead's Letter Written to the Publisher from Derby Novemb. 16. 1672. Concerning the Appulses, by Him Calculated for A. 1673. of the Moon, and the Other Planets to Fixed Stars; Together with an Observation of the Planet Mars, Made by the Same

it is white, Gills and all; for the place, that it grows in woods; and for the taste, that 'tis hotter than Pepper. Several particulars mention'd by you, are not observ'd or not mention'd by him. I cannot say, that I have as yet met with this Mushroom. An Extract of Mr. Flamstead's Letter written to the Publisher from Derby Novemb. 16. 1672. concerning the Appulses, by him calculated for A. 1673. of the Moon, and the other Planets to Fixed Stars; together with an Observation of the Planet Mars, made by the same. I Herewith send you my Annual task, but flightly done. Indeed my frequent Journeys and domestic business have kept me so employ'd, that I have not had time to make such Calculations as I intended. I have only noted the Time of the Moons true Conjunction with the Fixed Stars from the Learned Heckerus his Ephemerides, with the point then ascending at London; with a conjecture therefrom, when the Visible Occultations shall happen: from which the intelligent Observer may be sufficiently inform'd, when to wait for any appearance, and what will be observable. Besides, having of late observed, with my seven foot Tube, some Appulses of the other Planets to Fixed Stars, and collected all the Observable ones of the next year, I have added them to the Lunar Appulses. Both are very slender labours, but may be very useful. September last I was at Townley. The first week that I intended to have observed & there with Mr. Townley, I twice observ'd him, but could not make two Observations, as I intended, in one night. The first night after my return, I had the good hap to measure his distances from two Stars the same night; whereby I find, that his Parallax was very small; certainly not 30 seconds: So that I believe, the Suns Parallax is not more than 10 seconds. Of this Observation I intend to write a small Tract, when I shall gain leisure; in which I shall demonstrate both the Diameter and Distances of all the Planets by Observations; for which I am now pretty well fitted. Having observ'd the Distances and Positions of the 3 Stars, by which I made his transit, I find, that Tycho errs 5 minutes at least both in the Places and Latitudes of them compared one with another. And certainly he errs as much in many others; so that the labour of Monsieur Hevelius to rectify their places is very needful. Not that I find fault with Tycho; 'tis a wonder, (considering how difficult it is to set plain Sights to a small Star) that ever he performed so much and so well: But if M. Hevelius use not Glasses in their room, I fear, we shall but be where we were; and yet without this Restitution we cannot expect any thing certain, much less accurate, in Astronomy. Luna Lunae ad Fixas Appulsus, Londini A. 1673. Observabiles: A locis ejus veris, in Ephemeridibus Heckeri consignatis, praefisi, & brevibus notis descripti a Joh. Flamsteed Anglo. 1673. Januar. d. h. 17. 8. 21. 3 cum Fixa in Σ 3° 34'. cum lat. Sept. 4° 36'. Fixa latitudine 3° 57'. horoscopus nr 29°. Ergo Luna circa horam 9. abscondet stellam Australi limbo. h. 22. 10. 4. 2 cum Fixa in Σ 18° 56'. latitudo vera sua 0° 46'. Sept. Fixa latitudine 0° 16'. Sept. Horoscopus = 11. Propterea Luna ante horam 9. abscondet 4° medio limbi sibi, vel circa paludem Marestias. Eadem nocte, Hora 16. 10'. Luna cum alia Fixa in Ω 22° 45'. Luna tunc vera latitudine 0° 25'. Sept. Fixa 0° 00'. Horoscopus + 17. Ergo Luna limbus borealis post horam ibit infra stellam. 24. 14° 7'. Luna in Ω 22° 28'. latitudo Meridianalis 2° 5'. Fixa in eodem loco latitudine: item Mer. 3° 2'. Horoscopus nr 25°. Ergo Luna, paulo post medianam noctem, vei stellam limbo Australino abscondet, vel modo intervallo supertranabit. Februar. d. h. 26. 11. 21. Luna in Σ 14° 19'. latitudo ejus 3° 56'. Fixa latitudo 2° 56'. Bor. Horosc. m 12. Ergo Luna, post semihoram, stellam lucis 6° medio limbi obscuri sui occultabit. h. 17. 15° 51'. Luna cum Fixa in Ω 2° 48'. latitudo vera 2° 12'. Sept. Fixa latitudine etiam Sept. 1° 14'. punctum oriens nr 6. Luna propterea, post semihoram, Australino limbo abscondet stellam. h. 19. 7. 46'. Luna in Ω 25° 52'. latitudinem habet Aust. 1° 5'. Fixa 1° 25'. Punctum Eclipticae ascensens est = 6°. Ergo Luna ante semihoram boreali parte limbi obscuri stellam lucis 5° abscondet. Martii h. 12. 5° 59'. Luna cum lucida Pleiadum latitudo 5° 10'. borealissime inter Pliaidas 4° 28'. Sept. Horoscopus nr 23°. Luna ergo ante horam 8. Australi limbo abscondet stellam. h. 14. 7° 11'. Luna cum fixa in Ρ 23° 55'. latitudinem habet 4° 40'. Fixa tantum 2° 6'. Sept. oriens = 5°. Luna ergo Fixam medio limbi obscuri, post semihoram, occultabit. 18. 10. 57. Luna in \( \Omega \) 22°45'. Latitudo borea 0°27'. Fixa ibidem 0°0' horoscopus m 27° propterea Luna in nonagesimo, paulo antea, Ecliptice, boreali parte obscuri limbi abscondet stellam. Aprilis d. h. 13. 6. 45. Nondum subducto Horizonti nostro sole, Luna Praepis juncta latitudo vera 10°51'. Sept. Praepis 10°14'. Horoscopus = 29° Ergo Luna in Nonagesimo limbi obscuro boreali quadrante conteget nebulosas. Junii d. h. 6. 8. 31. Luna in \( \Omega \) 25°0. Latitudo 2°5'. Sept. Fixa ibidem latitudo 1°-15' punctum oriens ±28°. Propterea Luna post horam 9° medio obscuro limbi conteget stellam. h. 8. 10. 51. Luna in \( \Omega \) 25°52'. Latitudinem habet 0°40'. Aust. Stella 1°-25' etiam Australis. Oritur tunc ±15° propterea Luna descendens limbus si non atinget stellam, cum tamen quam proxime sequetur. b. 9. 11. 21. Luna in \( \Omega \) 10°21'. Habet latitudinem 1°-5°. Aust. Fixa 2°-29°. Oritur \( \Omega \) 3°. Propterea Luna descendens stabit infra *°. h. 21. 15. 21. Luna cum Fixa in \( \Omega \) 13°8'. Latitudo 0°28'. Aust. Fixa 1°-16°. Item Aust. Horoscopus \( \Omega \) 4°. Ergo Luna post semihoram medio limbi lucidi abscondet stellam. h. 29. 18. 00. Luna cum lucida Pleiadum latitudo 5°-10°. Horoscopus \( \Omega \) 9°. Propterea oriente sole borealiore inter eas potest contegere. Julii d. h. 19. 14. 11. \( D^c \) in \( \Omega \) 21°-17°. Latitudo Sept. 0°-19°. Fixa latitudo in eodem loco 0°-10°. Aust. Horoscopus \( \Omega \) 12°. Deinde post 22° temperis Luna cum sequenti stella, cujus locus \( \Omega \) 21°-28°. Lat 0°-14°. A. Quamobrem circa hor. 13°. Luna contigui fixas parte limbi boreali conteget. h. 27. 16. 57. Luna cum Fixa in \( \Omega \) 3°-35°. Latitudinem obiunet 5°-4°. Sept. Fixa 3°-57°. Oritur tunc \( \Omega \) 19°. Luna transit supra stellam, cui proxime appropinquat, circa 16 hor. Augusti d. h. 22. 12. 11. Luna in \( \Omega \) 13°-58°. Cum latitudine boreali 5°-12°. Fixa cum ea latitudo 4°-8°. B. Horoscopus \( \Omega \) 14°. Propterea circa horam 10° p.m. Australi parte limbi lucidi abscondet Fixam. 23. 8°-53'. Luna cum lucida Pleiadum in 25°. 25'. cum latitud. Sept. 5°-12'. Horoscopus 22°. Quamobrem Luna tunc exorta stellas Pleiadum praterit; à quibus tamen medico intervallo, tubis facile capacioribus dimetiendo, distabit. 27. 15°-17'. Luna in 25°-0. latitudo vera borea 2°-2'. Fixa cum ea latitudo 1°-15'. Horoscopus 20°. Ergo circa horam 13° p.m. Luna fixam occultabit in Australi parte limbi lucidi. Septembris 19°. 14°-24'. Luna erit in 25°-25'. cum 5°-01'. latitud. septentrionali: Oritur tunc 27°. Luna propterea in nonagefimo limbus Austriacus borealiores teget Pleiadum, qui tunc tamen a media & lucida 15 min. ad boream distabit. Octobris 9°. 11°-31'. Luna in 21°-28'. latitudo borealis 0°-33'. Fixa cum ea latitudo 0°-14'. Austr. Horoscopus 9°. Quamobrem Luna circa horam 12° fixam hanc, & hinc contignam, paulo ante occasum suum, Australi limbo teget. 17°. 11°-21'. Luna in 3°-35'. ejus latitudo 4°. 42°. Sept Fixa cum ea latitudo 3°-57'. Horoscopus 12°. Quamobrem circa horam 10°. eam in Australi parte lateris lucidi abscondet. Novembris 12°. 9°-49'. Luna in 13°-58'. latitudinem habet 5°. 0°. Sept. Fixa cum ea 4°-08'. Sept. oriente 14°. Luna propterea, tunc in ipso Nonagefimo sita, vel fixam austriaco limbo teget, vel modico ab ea intervallo distabit. 13°. 5°-56'. Luna lucide Pleiadum verè juncta latitudinem habet veram borealem tantum 4°-52'. Horoscopus tunc 2°. Propterea in Australi corporis sui semicirculo mediam lucidam abscondet Luna, in boreali borealiiores. Appulsus 1° circa solis occasum, easteris subinde ordine conspicendus. Decembris 10°. 16°. 0°. Rursus Luna cum lucida Pleiadum, latitudinem obtinet 5°. 0°. Sept. Horoscopus m 11°. Quamobrem Luna mox occidentalem subteget, & paulo ante occasum, lucidam. 11°. 6°. 6°. Luna in 3°-35'. latitudo Sept. 4°. 43'. Fixa cum ea 3°-57'. Horoscopus 7°. Luna ergo circa 5° medio corpore stellam teget. 13°. 10°. 41'. Luna in 5°. 23'. latitudo vera 2°. 54°. Sept. Fixa 2°-11°. Horoscopus 17°. Quamobrem Luna plena paulo postea stellam occultabit medio Australis semicirculi. Reliquorum Reliquorum quinque planetarum ad Fixas Appulsus, eodem Anno 1673 observabiles; ab iisdem J. Heckeri Ephemeridibus deducti a J. Flamstead. | d. M. | Planetarum loci | Latitud. | Distantiae a fixis in Longitud. | In Latitud. | |-------|-----------------|----------|---------------------------------|-------------| | Jan. | 6 vesper. | 5 in V° 22° 59' 0" 36' E. | 13 in ant. 20° V° cum 1° 2 ad Austr. | 2 ad Austr. | | | 6 vesper. | 5 in 0° 09' 1° 33' Au. | 44 in ant. 15° cum 0° 23 Austr. ab ea | Austr. ab ea | | | 13 vesper. | 7° 1° 23' Au. | 25 in conf. 23° cum 1° 03 Austr. | 03 Austr. | | | 15 vesper. | 9° 58' 1° 20' Au. | 3 in ant. 24° cum 0° 14 Bor. | 14 Bor. | | | 17 vesper. | 12° 25' 1° 16' Au. | 14 in ant. 25° cum 0° 16 Austr. | 16 Austr. | | Febr. | 46 mane. | 5° 0° 36' 1° 04' E. | 8 in ant. 6° V° | 0° 16 Bor. | | | 56 vesper. | 5° 10° 36' 0° 57' B. cum stella 13° V° | 0° 10° Austr. | Austr. | | | 76 mane. | 5° 2° 43' 0° 23' B. | 24 in ant. 10° V° | 0° 08 Bor. | | | 86 vesper. | 5° 12° 28' 0° 58' B. | 5 in conf. 12° V° | 0° 14 Austr. | | | 136 vesper. | 5° 15° 0' 0° 03' B. | 20 in ant. 13° X° cum 0° 54° Austr. | 54° Austr. | | | 146 vesper. | 5° 16° 12' 1° 01' B. | 4 in ant. 9° V° | 0° 44 Austr. | | Martii | 616 vesper. | 5° 28° 40' 1° 09' E. | 12 in ant. 24° V° | 0° 03 Austr. | | | 76 vesper. | 5° 10° 34' 1° 29' E. | 2 in ant. 13° V° | 0° 22 Bor. | | | 86 vesper. | 5° 11° 42' 1° 33' E. | 41 in ant. 12° V° | 0° 21 Bor. | | | 96 vesper. | 5° 12° 50' 1° 37' E. | 27 in conf. 12° V° | 0° 25 Bor. | | | 126 vesper. | 5° 16° 11' 1° 49' E. | 5 in ant. 9° V° | 0° 03 Bor. | | | 146 vesper. | 5° 18° 55' 1° 57' E. | 27 in ant. 11° V° | 0° 39 Austr. | | | 146 vesper. | 5° 03° 41' 1° 11' E. | 2 in conf. 23° V° | 0° 36 Bor. | | | 166 vesper. | 5° 20° 58' 2° 05' E. | 14 in ant. 22° V° | 0° 07 Bor. | | | 186 vesper. | 5° 13° 38' 1° 36' E. | 5 in conf. 26° Aurige | 0° 27 Austr. | | | 206 vesper. | 5° 7° 27' 1° 12' E. | 9 in ant. 20° V° | 0° 32 Bor. | | Aprilis | 1c7 vesper. | 5° 16° 39' 1° 41' E. | 23 in conf. 9° V° | 0° 05 Austr. | | | 127 vesper. | 5° 10° 53' 1° 35' E. | 3 in conf. 8° V° | 0° 48 Austr. | | | 147 vesper. | 5° 23° 7' 1° 16' E. | 11 in conf. 27° Aurige | 0° 10° ad Bor. | | | 178 vesper. | 5° 23° 28' 3° 34' E. | 30 in ant. 24° Aur. | 0° 32 ad Austr. | | | 188 vesper. | 5° 24° 22' 3° 35' E. | 23 in conf. 24° Aur. | 0° 31 Austr. | | Maii | 1c8 vesper. | 5° 9° 24' 1° 16' E. | 14 in ant. 21° V° | 0° 14 Austr. | | | 118 vesper. | 5° 10° 11' 1° 16' E. | 23 in conf. diste fixa | 0° 14 Austr. | | | 168 vesper. | 5° 14° 14' 2° 43' E. | 5 in ant. 8° V° | 0° 13 Austr. | | | 284 mane. | 5° 13° 26' 2° 31' E. | 6° cum fixa 14° X° | 0° 0 Austr. | | Junii | 43 vesper. | 5° 25° 1' 1° 15' E. | 1 in conf. 8° Cancri | 0° 02 Austr. | | | 103 vesper. | 5° 2° 33' 1° 13' E. | 15 in ant. 1° Cancri | 0° 01 Austr. | | Julii | 288 vesper. | 5° 13° 38' 1° 10' E. | 14° cum stella 9° V° | 0° 35 Austr. | P p p p p Augusti | Hor. | Planetarum loci | Latitud. planet. | Distantia à fixis in Longitud. | In Latitud. | |------|-----------------|-----------------|-------------------------------|-------------| | Aug. | 17 mane | 18° 37' An. | 16' in ant. 27° II am | 11 Bor. | | | 18 mane | 19° 42' An. | 36 in conf. 27° dille | 17 Bor. | | | 26 mane | 27° 44' An. | 4 in conf. 10° Canceri | 26 Austr. | | Sept.| 55 mane | 6° 48' An. | 1 in ant. 12° | 14 Bor. | | | 126 mane | 22° 14' An. | 3 in conf. 17° | 41 Austr. | | | 206 mane | 22° 38' An. | 7 in ant. 10° | 26 Austr. | | | 226 mane | 24° 48' An. | 30 in ant. Cordis | 42 Austr. | | | 236 mane | 25° 54' An. | 6 in conf. Cordis | 38 Austr. | | | 286 mane | 1° 31' An. | 18 in ant. 15° | 03 Bor. | | Octob.| 16 mane | 0° 21' An. | 4 in conf. 6° | 12 Bor. | | | 56 mane | 9° 27' An. | 32 in ant. 38° | 42 Austr. | | | 66 mane | 10° 3° An. | 37 in conf. stelle | 37 Austr. | | | 115 mane | 13° 40' An. | 2 in conf. 9° | 12 Bor. | | | 135 mane | 18° 39' An. | 17 in ant. 11° | 50 Bor. | | | 165 mane | 22° 10' An. | 23 in ant. 5° | 32 Bor. | | | 236 mane | 0° 29' An. | 13 in conf. 6° | 07 Bor. | | | 296 mane | 2° 15' An. | 7 in ant. 24° | 31 Bor. | | | 316 mane | 10° 04' An. | 22 in conf. 1° | 08 Bor. | | Novem.| 17 mane | 2° 27' An. | 4 in conf. 24° | 05 Bor. | | | etiam | 13° 38' An. | cum fixa 9° | 05 Bor. | | | 57 mane | 4° 00' An. | 4 in conj. 8° 13' | 30 Borellier | | | 106 mane | 3° 47' An. | 6' in ant. 17° | 10 Bor. | | | 156 mane | 22° 05' An. | 1' in conf. 12° | 01 Austr. | | | 236 mane | 7° 43' An. | 4' à 2° 53' circ. | 50 Borellier | | | 247 mane | 9° 17' An. | 26' in ant. 2° | 04 Austr. | | Decemb.| 86 mane | 26° 21' An. | 16 in conf. 12° | 05 Bor. | | | 106 mane | 10° 31' An. | 1 in conf. 1° | 37 Bor. | | | 116 mane | 0° 16' An. | 11 in conf. 5° | 14 Austr. | | | 126 mane | 29° 05' An. | 3 cum fixa 6° | 04 Austr. | | | 247 mane | 16° 30' An. | 14 in ant. 27° Ophiuchi | 34 Austr. | | | 267 mane | 19° 00' An. | 22 in conf. 3° Ophiuchi | 04 Austr. | Stella Jovis in Ephemeride assignati loci deficient hoc anno 13° ab his quos celestis observavimus: propterea ejus omnes ad Fixas appulsius ante duos & amplius dies quam confinantur observari possunt. At in 8° & 9° ad eum applicationibus, eadem 13 min. ipsius loco adiici; ut, si aliquid à descripta Planetarum positione observat a dissentiat, in illorum solis locis peccare Ephemerides credantur. Sic omnes majorum Planetarum ad Fixas appulsius, Tubo Optico gradum unum recipiens, observabiles brevi tabella complexus sum. Ne nos nulla observandi praeter abeatur opportunitas impravis, cura fuit. Vestrum debinc, fidi Calispicus, fuerit ne harum ulla neglecta pereat: Ab his enim accuratè & tandem fixarum loci restituantur (quod plurimum desideratur,) opime veri planetarum motus cognosci, restitui, & calis annuentes tabula construi possint: quod in votis habet Calorum & Calispicum Assiduus Cultor F.