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Report of the Superintendent of the United States Coast Survey

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Report of the Superintendent of the United States Coast Survey 138 REPORT OF THE SUPERINTENDENT OF APPENDIX No. 14. A J,,JST 01•' STARS FOR OBSERVATIONS OF LATITUDE. It has been the custom heretofore in the Coast Survey to select from the British Association's Catalogue the pairs of stars suitable for the rletermination of latitude, by the method of observing equal meridian zenith-distances with the zenith-telescope. The numbers of the stars so selected for observation at any station were sent to the Office, where the mean declinations for the year of observation were obtained by reference to all recent catalogues of precision, comprising the several Greenwich Catalogues, the \Vashington Observations, the Radcliffe and Armagh, and, where these failed, the Rumker Catalogue. For stars not found in at least two of these catalogues, and those which exhibited large discrepancies in position, express observations were made, li:r request, at the observatories at 'Yashington and Cambridge. This practice of deducing the declinations of stars from observations ma<le with different cir­ cles and under varied circumstances has led to a great degree of precision in the assumed declina­ tions. The stars used iin the method of equal zenith-distances comprise those down to the sixth magnitude, most of which have not been the object of precise determiuation as standard stars. Still we :fiml that tlle probable error of the declination of a star derirnd in the manner above mentioned does not exceed ±0".3. And the probable erroc of one obscryation with the instruments nsed being between 0".3 and 0".5, the observation of sixteen pairs of stars on four nights nevC'r fails to reduce the probable error of the latitude below 0".1. The British Association's Catalogue is now very difficult to obtain, and its coustauts have ue­ come obsolete by lapse of time. The continued demand on the Office for copies which could not be procured led to the preparation of the catalogue given below, which is intended to replace it as a list of stars anlilaMe for the obserrntiuu of latitude by the zenith-telescope in the limits of the United States. That list, giving the right ascensions only to the nearest tenth of a minute in time, a11d the declinations to tlie nearest minute of arc, for the epoch 1880, is intended to serve merely for the selection of stars for the observation of latitude. They comprhm all the stars that are found in the "Bonner V-erzeiclmiss," or Nordliche D1trchm11sterung of Argelander, included between sso 40' north and 10 48' south declination, and to his 5.9 degree of magnitude inclusfre. The list was selectetl under the direction of Assistant C. S. Peirce, and their places computed for the epod1 of 1880 with sufficient aceura'ty for the purposes above stated. The magnitudes have been reduced to a scale of "equable distribution," according to tlie method explained in ~Ir. Peirce7s Photometric Researches in the .Annals of the Harvard Ool1ege Observatory. It is the intention of the Coast Suney Office to reprint at an early day this list of stars, with their accurate positions in declination and right ascension as far as ascertainable. The Catalogue of Reis having been thoroughly compared in the preparation of this list, numerous enata liave been discovered in the same, which are here given as a supplement. The 1mm bers of tlwse stars which are contained in the Briti.sb Association's Catalogue are gi vcn in the second column of the list: the third column gives the usual designation by constellations. Other reforences are given in the last column; the following abbreviations being used: ABBREVIATIONS. A. Oe. Argelander Oeltsen, vYien, 1851-52. B. Argelander, Bonn, lSGl-62. D. M. Durcbmusterung. F. Bradley's, Bessel, 1818. L.L. Delalande, llaily, 1847. P. Pia.zzi, 1814. Rad. Radcliffe, 1860. Ru. Rumker, 1843. s. Struve, 1852. w. Weisse, 18~t \yi_ Weisse, 1842. THE UNITED STATES COAST SURVEY. 139 List of stars for latitude-observations. ' . ' ! ~fagni- I Hight nsc-en- : Deelinntiou, No. JI. A. C.: Con!"ltcllation. Yal'ions. 1 tndt'J. j sion, ll".180.0. 18b0.0. ----'-----· h. m. 8373 10 Cai;isiop ...... 5. 3 0 0. 2 I 63 31 2 Anclrom ·---·--·········--·a .. l. 9 :J. 2 ' 28 26 3 Cassiop ..••.•.....•........ /J .. i 2. 5 58 29 87' I'qz;aai. ...........•..•........ 5. 4 :.2. 9 li :-14 5 14 :H Piscium ..•.......•............ 5. 6 ::.1.0 10 2!1 16 22 Androm ·-------··- 5. 1 4. I 45 24 7 Androm ----···-··········--··: 5. 4 ~. 7 I 47 2~ 10 Rad. 8 D.M.14 ...•.......•.......•... ' 5. 9 5. 8 i 22 49 9 26 88 Pe~asi. ......... ___ ........ y .. · 2. j I 7. 0 I 14 31 I 10 ~! 2:l Androm •••••.••.•••......•.. .: 5. 4 7. 3: 40 Z.l 11 I 32 89 PegasL ..•... --- ......... --X· .; 4. 9 8. 4 ; 19 33 12' 5.!J 8. 7 ! 21 37 Oh, l}J9 ""· 13 3u 35 ~:!~~~:::·.::·.·.:·.·.-... ~t-5~~-:j 5. g s. e 09 H Androrn •..............•...... 5. g 10. 1 42 56 i 44 lto.d. 15 46 Cassiop ....•... _ ...... ______ . 5. y HLS 60 5-2 i 10 51 .Androm ..••...•..........•... · 5. g 10. 8 : 47 !(; 17 52 24 Androm ······-----··-··---u .. ; 4. j 10. 8 38 01 lt' 58 25 Androm ..• - ..••..•..••.... u .. ; 4. 4 12. 0 i 36 07 ]!) tiO 26 Androm ..••..•..•••..••..••.. ~ 5. 7 12. 4 43 Ot' !!O .r\ ndrorn --- .. __ ..•...• {72 Il.). 5. 9 l~. 5 30 52 or., 3~ Pinzzi. 21 .A.ndrom .••..••.....•. (7Gll.) .. G. 9 Hoi 32 15 j :JG7 L. I~. G7 ' 27 An<lrom ................... p .. ! 5. 4 1-i. n , 37 IH 7H CaRsiop ...•... __ .••..•••.•• _•. [ 5. g 17.8 !\! 21 78 Anclrom .... ' 5. 4 17. 4 43 45 e:3 Cassiop ········-···-··-· ..••.. : 5. g 1~. 6 5~ 23 101 47 l)iscinm ······--···-·-····--·· 3. ~i 21. ~ . 17 13 21 102 1 4i! rist:illlll ··-·· ·-· ·---···-· ·--· ::>. ~l 22. 0 15 4ti i Cassiop ···--··--·--····-···-· .l. B 2:J. 7 fl!J t~ ; -6::->5 L. L. !W 109 2B Androm ...... ___ .... ___ .. __ . 5. 7 2:~. 8 : 2~ 05 30 121 14 Cnssic>p ......................... 5. 1 25.1 ' 53 50 31 120 75 .Androm ............. (104 ll.) .. , 5. 9 23.1 :i2 56 3~ J~(i Cassiop ...... ___ ......•.. .. ic •• 4. 5 2U.1 G:! 16 1 33 J::JO 52 l'iscimn -·-····-·---·---··---·; 5 . .J 2G. a 1!) ~B :11 142 l"'iscium .••..•...•... (123 H.) .. ' 5. !) 2S. 7 12 43 : 35 147 Uoti. •.••.......•.............. ; 3. (i ':!~'- 4 - 1 11 UH. 36 HG Cas•iop ............... (58 ll.) .. ; 3.() 29. !) 53 30 :rJ 14S Cassiop ..••.•....•...• (59 B.). 5. !) 5!) 3!) 3~ 152 .Androm ··------·--- ......••.. :!0.1! 43 50 (17 II.> 30 17 Cassiop ...•...•........•.•. ~ .. 4. 2 ao. 3 : :;:1 H 40 29 And1'0ln ...•.•••..•. , ....... ii .. 4. 2 30. :-) : :u 04 41 .Antlrom .••...•..••.. (ll 7 B.J .. 5. H 30. 8 ! 2:J 2l '. Oh 1 7~)7 ""' . 4:2 158 .F.430 .•...•................... 5. 6 :ll. 0 :l! 41 43 164 Androm •.... ·····--· ...... c;. 4. 5 a~. 'i! ; 28 40 I H 16.J Cassio1) .•••.•.....•...•.. _. _. 32.5' 4~ 42 43 lfifi Androm .................. cl .. ;1. 5 3;.?. 9. 30 12 i 4G 170 55 Pisdum ··--··-··· 3:1. 6 20 41' i 47 Hi!l Cassiop •..•...•...•........ (1. :~1. 7. 5;_. 53 ~ 43 173 32 .Androm .................... .. 5. 4 :14. 6 ' :iii 47 : 49 175 : Cassiop ..•...•....... (f\8 l~.} .. ' 5. ~' 3.J.9 : 65 28: 17~ ' Antlrom ............. (12ll JI.). 5. ~' 35. 3 ~ 23 5!J , 10137 L. J,. "°51 Bo 19 Cassi<>p .................... g .. 5.0 35. 5 49: 51 : 5~. 1"9 20 Caesiop ........................ 4. 5 36. 8 ! 46 22 53 194 21 Cassiop ...........•...••...... :J. 4 37." 74 2() ' 54 197 Cassio11 ...•.... - ... - ...... -- - . ~ 5. fi 3'7. Et 47 12 j 5,'j 198 22 Cassiop .......... ·----~---·o .. '. 4. 7 :ie.1 n 38 56. 201 Cassiop ............... (74 B.) .. 5.6 313. ·1 5l 34 51: 206 2:.i Ca8sio1l. ··-- ...•.••..•••.•.•. 5. tJ au. D ... 12 211 57 Piscium ................... 4. 9 40. 3 14 49 213 5ll Plseium ........... 5.1 40. 7 11 20 2'J 37 60' 2l5 34 .Androm ••••••••.•••..•..•• ~ .. 3. 9 4l. 0 61 218 24 Cassiop .................... ~ .. 3.6 0 41. 6 57 11 140 UEPORT OF THE SUPERINTENDENT OF List of stars for latitude-observations-Continued. Magni­ Right as-cen­ Constellation. Declination, I -, tude. sion1 1eso.o. lBt:-0.0. Various. ~~~~~~~~~~II I !--~~~~~~~~ I I h . .... ' l i , . ! 5.1 0 42. 0 50 19 ( 62 i 219 2~ Cassml• ---- •... - ... - .. - ...... " .. i 63 i 2'll Piscium ·---·---------------.. ! 5. 9 i 42.1 40 ! M.20. 6! i 22-i 63 l"isciam ------ ------· ...... o.. l 4.5 \ 4\l. 5 42. 7 65 ! 223 64- Piscium ....................... 1: 5. 4 ! 66. 227 35 Androm ·-------·--------··•··! 4. 6 I 43.'.! 67 Cassiop ---··- ----. ___ -- _. -- . - -I !J.6 ! 43. 5 ~ ~i 68 65 Piscinm ...................... i __ : 5.31 43.5 69 Cassiop ----- ..... ___ ...... __ .-I 4. 9 I 45. 9 :~ ~I (18 H.) 70 20 Ceti ··--·-····---------·------ 46. 9 - 1 481 71 26 Cassiop ..................... vi •. 47. 9 SR 10 72 66 l?'iscium ..•..•.......•........ 48. 2 JS 32 i 7.'l · 256 61 Fiscinm ----····-·-··--···-k·-' 48. 5 26 33 ! ;4 253 Cassiop---------------·--·-Y· 49. 5 60 05 I 251 28 Cassiop ..............•.... L• 2 • -i 4!~. 5 .'>8 31 50.1 37 51 ~: ~-:~:: --~~~~~~------·-~----~~~~~:~~i 4. 5 50.8 22 47 Ca~siop. ______ ....... (97 B.). I 5. 9 51.0 65 41 267 5. 9 51. 3 28 21 26D 5. 9 51.6 13 1)4 M.28. 68 ~:;!~:~:: :::::: :::::_·: :::::·:~'::! 4. 9 ; 52.6 8:i 37 (43 H.l 39 Androm ...•......•........... \ 5. 9 5fi. 2 40 41 Pis.cium. -~-. ___ ...... __ .. ul __ ! 5. 4 56.!! 31 10 84 . 71 Piscium .........•.......... E •• · 4. 3 i 56.
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