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291

of the principal fized Stars.

a Cygni. 1812 , Sept. 15, 16, 17, 18, 20,356,846 Mean of 1056,846

, 21, Oct. 2, 3, 4, 5 Oct. 8, 10, 13, 14, 16, 22, 23,56,568 Mean of 20 56,707

24, Nov.

7,

8

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5, 7, 9, 10

21, 22, 23

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Nov. 15, 19, 20, 21, 22, 23, 24"}56,980 Mean of 30|56,798

, , Dec. 8, 9, 10 Dec. 13, 30. 11813, Jan, 8, 9, 357,405 Mean of 40 56,925

, , 22, Feb. , 9, 10 Feb. 15, 28, March 6, 11, 12,

}57,178 Mean of 50 56,975 16, 20, 26, 27, Apr. i July 27, 28, 29, 30, Aug. 3, 4" }56,665. Mean of 60 56,940

4, Aug, 11, 12, 13, 15, 17, 19, 20|}56,887 Mean of 70|56,947

Result very exact.

a Lyre. 1812, July 6, 7, 9, 10, 14, 17,} 6,123 Mean of 10 6,123

, , , 21, 22, 23, 26 M July 28, 30, 31, Aug. 1, 6, 12, } 0,514 Mean of 20 0,318

| 13, 15, 16, 17 Aug: 18, 19, 20, 21, Sept. 151|} 0,364 Mean of 30 0,334

16, 18, 19, Oct. 1, 2 Oct. 3, 4, 5, 8, 9, 10, 12, 151} 0,299 , , ,

0,299 Mean of 400,325 16, 19 Oct, 21, 24, 26, 28, 29, 31, } 0,983 Mean of 50 0,457 Nov. 13, 15, 19, 20, 21, 22, 23, 2.

0,857 Mean of 60 0,522 Dec. 2, 6, 8 Dec. 9, 10, 12, 13, 1813, Jan. } 0,514 Mean of 70 | 0,521

, 2, 7, 9, 15, 21, June 22 June 23, 24, 25, 26, 27, 28, 20,

1} 0,501 Mean of 80 0,519 July 5, 6, 9, 10

, 6 July 11, 12, 13, 16, 17, 18, 19,

1} 0,187 Mean of 90 0,482 29

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Nov. 2, 3, 7,

8

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23, 24, 25 MDCCCXIII.

Castor.

1812, Aug. 13, 19, 21. 1813,

Jan. 16, 24, 28, Mar. 5, 7,146,916 Mean of 10 46,916

10, 16

Mar. 18, 23, 31, Apr. 3, 8, 11,}46,672 Mean of 20 46,794

13, 15, 28, June 1

Aug. 11, 14, 16, 23, 24, 28,

|} 46,596 Mean of 30 46,728 Sept. 2, 6, 7, 10 ,

Pollur.

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1812, June 13,15,19, Aug. 13. } 56,536 Mean of 10 56,536

16, 17, 19, Oct. 1, 3, 4 Oct. 11. 1813, Jan. 16, 22, 24, 356,332 Mean of 20 56,434 Feb. 28, Mar. 5,10,13,18,23

} Mar. 31, Apr. 8,11,13,15, Maylı

356,313 Mean of 30 56,394 28, June 1, 25, July 28, 30

} Aug. 3, 5, 11, 16, 22, 23, 24, 256,380 Mean of 40 56,341 25, 28, Sept. 1

}
Exact to a quarter of a second,

B Tauri,

1812, July 20, 22, 30, Aug. 13,

19, 21, Nov. 19, 28. 1813,143,650 Mean of 10 43,650 Jan. 2, 8 Jan. 10, 11, 13, 24, 25, 27, 28,}43,438 Mean of 20 43,544

, 31, Mar. 1, 3 Mar. 5,6,7,12, 17, 18, 19, 21,

} 43,410 Mean of 30 43,499 Apr. 9, 10 Apr. 11, 12, 14, July 15, 16, 17; } 43,903 Mean of 40 43,600

25, 28, 29, 30 July 31, Aug. 6, 8, 9, 11, 15. } 43,820 Mean of 50 (43,669

, 6, , , ,

Exact to less than a quarter of a second.

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293

of the principal fired Stars.

a Cor. Bor.

1812, June 11, 12, 13, 14, 15,

}55,441 Mean of 10 55,441 19, 21, 22, 23, 28 June go, July 4, 6, 8, 9, 15, 18,

}55,295 Mean of 20 55,368 19, 20, 21 July 22, 26, 28, Aug. 18. 15. 355,316 Mean of 30|55-851

13, , 17, 18, 19, Sept. 15, 16

}: Sept. 19, 20, 21, Oct. 3, 4, 5, 6, 8, 18, 20

356,041 Mean of 40 55,523 Oct. 26, 28, 29, 31, Nov. 20, 21, 22, Dec. 7, 12, 14

}55,791 Mean of 50 55,577 1813, Jan. 8, 9, 11, May 29"}54,893 Mean of 60 55,453

, ,

, 8, 10, 16, 18 June 21, 29, 24, 25, 27, 29, July 5, 6, 10, 12

}55,008 Mean of 70 55,389 July 16, 17, 18, 19, 20, 28, 24"}55,487 Mean of 80

, , , , , 28

55,401 Exact to less than a quarter of a second.

« Arietis. 1812, June 18, 19, 22, 23, 26,

l}87,380 Mean of 10 37,380 28, July 6, 7, 9, 10 July 14, 17, 20, 21, 22, Aug. 17,

}36,263 Mean of 20 36,822 Oct. 24, 25, 26, 28 Oct. 29, 31, Nov. 3, 5, 6, 7, 8,

}

35,811 Mean of go 36,485| 9, 15, 19 Nov. 21, 22, 24, 28, 29, Dec. 6, 7, 8, 13. 1813, Jan. 8

336,582 Mean of 40 |36,497 Jan. 9, 16, May 29, June 199}36.474 Mean of 50 |36.492

, July 46, 11, 16 I mentioned this star as doubtful in my former Catalogue. I

. I believe the discordances were quite accidental, and that the mean result is within a quarter of a second of the truth.

29.2

Arciurus.

20, 26

Nov. 3, 5

1812 , June 11, 12, 13, 15, 16, 318,729 Mean of 10 18,729

, ,

} 19, July 4, 6, 7, 8, 9, 11, 15, 18,

319,867 Mean of 2019,298 July 18, 31, Aug. 7:14, 18, 19;} 19,342 Mean of 30 19,312

, ,

, 21, Oct. 2, 4 Oct. 7, 9, 13, 16, 18, 24, 25, 26,

}19,225 Mean of 4019,291

} Nov. 6, 7, 14, 18, 21, 22, 23, Dec. 6, 7, 8

$19,453 Mean of 50 19,323 Dec. 12, 14, 23. 1813, May 24, 26, 27, 28, 31, June 1, 4)

}18,761 Mean of 60 19,230 June 7, 8, 10, 11, 12, 16, 21,

318,585 Mean of 70 19,137 June 27, July 5, 6, 7, 9, 12, 16, 18, 19, 23

1} 18,653 Mean of 80|19,077 Exact to a quarter of a second, or less.

Aldebaran.

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22, 25, 26

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1812, June 23, 28, July 5, 7, 8,

}35,614 Mean of 10 35,614 9, 10, 25, 26, 28 Aug. 14, 16, 17, 19, 21, Sept: 5.1}35,135 Mean of 30 35,374

, , Dec.

20 28. 1813, Jan. 8, 10

25, Jan. 11, 16, 22, 24, 28, 31,

}35,475 Mean of 30 35,407 Feb. 23, Mar. 1,6,7 Mar. 11, 17, 18, 19, 31, Apr. 4,

}35,390 Mean of 40 35,402 8, 9, 10, 11 Apr. 12, 14, 15, June 28, July 6, 8, 10, 15, 16, 17

347 Mean of 50 35-392

85,347 July 23, 25, 27, 28, 29, 30 35,142 Mean of 56 35,365

Result very exact.

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ß Leonis.

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1812, June 13, 14, 15, 22, 29, 357,544 Mean of 10 (57,544

July 6, 8, 9, 11, 12
July 15, 23, Oct. 2, 3, 4, 6, 7

|$57,077

Mean of 20 57,310 14, 15, 22

This star has not been often observed, owing to its proximity in right ascension to y Urs. Maj.; but the result is probably exact to within o",3, as it very seldom happens that the mean of twenty observations differs a quarter of a second from

a the truth

a Herculis.

a

1812, July 11, 14, 30% Aug 3} 13,835 Mean of 10|1,3835

, , , , 20, Sept. 19 Sept. 20, 21, Oct. 3, 4,8,9, 29,

} 14,170 Mean of 20 14,002 g1, Nov. 15, 21

31 Nov. 22, 23, Dec. 12. 1813, Jan. 9, 11, 15, July 11, 25,13,803 Mean of 30 13,936

;

27, 28

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12, 13, 15

July 29, 30, Aug. 2, 4, 7, 9, 10;}14,223 Mean of , , , 9,

40 14,008 Aug. 17, 18, 19, 23, 24, 30, 31, Sept. 5, 6, 13

|}14,169 Mean of 50/14,040 Result very exact.

a Pegasi. 1812 , Oct. 1, 2, 3, 4, 5, 8, 10, 351,330 Mean of 1051,830

4, , Oct. 17, 21, 28, Nov. 3, 7, 9•}52,060 Mean of 20|51,695

, , ,

|

11, 12, 16

19,

5, 7, 12

This star is reserved for future examination.

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