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Observations of Nova (3. 1901) Persei

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Observations of Nova (3. 1901) Persei 2 99 3739 300 impossible to account for the changes on May 16 except would, also, have afkted the observations equally on other by actual variation of the asteroid. A correction for differ- days. Additional observations would have been obtained, ential absorption would not have exceeded 0.02, and, if but clouds and moonlight interfered. applied, would have increased the variation on May 16. It 1 ~ 1901 1 Gr.M.T. Magn. Res. Gr. M. T. Magn. Res. -__~~ _______ May14 I 13~31m4 2.00 0.00 lgh17m2 2.26 +O.OI )), 14 12.5 2.04 -1-0.04 15 40.8 2.26 +O.OI x 14 36.0 1 1.99 -0.01 13 54.0 2.13 -0.12 .v 15 13.2 1.99 - 0.0 I 14 13.2 2.21 -0.04 May15 13 48.1 2.22 -0.03 I4 39.4 2.27 +0.02 > 14 6.2 2.23 -0.02 '5 8.3 2.39 to.14 14 30.0 2.28 c0.03 +0.17 Harvard College Observatory, Cambridge, Mass., 190 I July 20. Bdward C. Pickering. Observations of Nova (3.1901) Persei. By CharZes P. OZivier. [Communicated by Prof. 0. Stone]. 1901 Febr. 23, 9h (Eastern Standard Time). Color of March 9. Mag. 3.3 k0.2; very smoky. a Lyrae. 0.2 mag. < Capella; estimated brightness 0.3 mag. March 12. 0.2 < d Persei; mag. 3.3. Clouds. March 13. 0.2 > v Persei; mag. 3.7. Febr. 24, gh3orn. Color of Capella; mag. 0.2. March 14. 0.2 < d Persei; mag. 3.3. Febr. 25. Mean of a Aurigae and @ Geminorum; March 16. 0.1 < v Persei; mag. 4.0 ~o.I. mag. 0.7. March 18. = v Persei; mag. 3.9. Febr. 26. 0.5 > a Persei; mag. 1.4. March 19. Mag. 5.0 f0.1. Febr. 27. 0.1> a Persei; mag. 1.8. March 21. Very red and has been since March I. Febr. 28. Color red; mag. 1.7. March 26. = v Persei; 0.2 > x Persei; 0.3 > 6 Per- March I. Color red ; mag. 2.3-c ; through clouds. sei; 0.2 > z Persei; 0.1 < 38 Persei; mag. 3.9. March 2. 0.15 > /3 Persei; mag. 2.15. March 29. < 32 Persei; > 36 Persei; mag. 5.2. March 3. 0.2 < fl Persei; mag. 2.5; red. March 31. Mag. 4.6 k0.1. March < Persei; mag. 2.45; red. 5. 0.15 fi The time of observation was always between 8h and. March 6. = E Persei ; mag. 3.0. loh Eastern Standard Time. An aperture of two inches was March 7. 0.15 > E Persei; mag. 2.85. used March I, 19, and 29; five inches Febr. 26-28; the March 0.1 < Persei; mag. 3.2& through heavy 8. 6 ; remaining observations were made with the naked eye. smoke. 'University of Virginia, April 10. Observations of Nova (3.1901) Persei. By Richard D.Micon. [Communicated by Prof. 0. Stone]. Comparison stars Weather 1901 ~ Hour I Mag. Comparison stars Weather Febr. 22 1~30" 0.5 Procyon, Capella Clear E Persei, 6 Persei Clear 23 7h 0.1 Capella Cloudy after 8h 4 I - - Cloudy 24 8 0.2 Capella Clear 5 loh 2.6 fi Persei, & Persei Clear 25 8 0.8 Aldebaran, a Orion. Partly cloudy 6 7h30m 3.05 E Persei, d Persei Clear 26 9 1.2 Aldebaran, @ Gemin Clear 7 7 30 3.05 E Persei, d Persei Clear 27 8h&roh 1.8 a Persei Clear 8 - - - Cloudy 28 8h 1.7 a Persei Hazy 9 8h30m 3.6 Q Persei, v Persei Partly cloudy March I0 - - - Rain I a Persei, @ Persei Clear I1 8h 3.6 Q Persei, v Persei Clear 2 fl Persei Clear I2 .? 3.3 d Persei, Q Persei Hazy 301 3739 302 - - - 1901 Hour Mag. Comparison stars Weather 1901 Hour vlag. Comparison stars Weather .- .- March March - I3 v Persei, x Persei Hazy 27 Cloudy I4 Q Persei, Y Persei Partly cloudy 28 1 and 30 Persei Clear (moon) '5 - Cloudy 29,30 - Cloudy 16 v Persei, x Persei Clear 3' 1, 30, 36 Persei Full moon '7 v Persei Clear April I8 v Persei, x Persei Hazy I -6 - Cloudy '9 1 Persei, 30 Persei Hazy 7 I, 30, 36 Persei Clear 20 - Cloudy 8 - Cloudy 21 1 and 30 Persei Clear 9 1, 30, 36 Persei Clear 22 G and 1 Persei Clear I0 1, 30, 36 Persei Clear 23 - Cloudy 11 I, 30, 36 Persei Hazy 24 1 and 30 Persei Clear 12-1 5 - Cloudy - 25 Rain 16 I, 30, 36 Persei Clear 26 v and x Persei Clear 17, 18 - Cloudy Remarks. Febr. 22. Bluish-white. - Febr. 25. Yellowish-white. - Febr. 27. Reddish. - March 2. Dull red. - March 13. Brilliant red. - March 26. Sudden rise. - March 28. ?all. - April 10. Yellowish-red. University of Virginia, 1901 April 19. Photographische Aufnahrnen von Planeten auf dem astrophysikalischen Observatoriuni Konigstuhl. Planet 1901 M. Z. Heid. a B Beob. - Eph. Beobachter (39 I 1 Ingeborg Aug. 8 10h43?3 ohr6m5 +36" 39' +3m5 -38' W (I 20) Lachesis Aug. 8 13 11.5 21 13.8 -21 5 +2.3 +14 C 9 13 38.0 21 12.8 -21 7 C (454) Mathesis Aug. 8 13 11.5 21 54.3 -22 55 -0.1 - I C (388) Charybdis Aug. 8 13 11.5 21 23.1 -22 5 +2.5 +17 C 9 13 38.0 21 22.3 -22 7 C (I 04) Klymene Aug. 9 13 38.0 21 1.3 -20 20 -5.0 +24 C (I 8) Melpomene Aw. 9 10 48.0 22 20.9 - 8 I4 -2.0 -32 C 14 II 18.5 22 18.1 - 9 14 W '7 11 3.3 22 16.1 - 9 53 W (I 74) Phaedra Aug. 9 10 48.0 22 14.8 -11 54 -1.0 + 5 C I4 I1 18.5 22 10.3 -11 56 W (I 22) Gerda Aug. 9 10 48.0 22 29.9 - 8 15 -2.3 + I C '7 11 3.3 22 24.5 - 8 48*) W (2) Pallas Aug. 17 10 27.7 23 7.1 + 5 32 -1.6 -28 C I8 I2 10.2 23 6.9 + 5 21 C (329) Svea Aug. 17 10 27.7 22 59.5 + 3 24 +0.7 0 c 1901 GQ Aug. I7 10 27.7 22 41.1 + 6 25 - - C 18 I2 10.2 22 40.2 + 6 26 C Vie1 Muhe haben uus (454) Mathesis, (391) Ingeborg und (31 5) Constantia gemacht. Vergeblich gesucht, wohl wegen der damaligen Lichtschwache, hat Carnera am 13., 16. und 18. Juli nach (454) Mathesis (gefunden am 8. August). Nach (391) Ingeborg habe ich selbst vergebens gesucht am 8., 9. und I I. Juli (gefunden am 8. August), nach (315) Con- stantia am IO., 14. und 17. August, sie wurde am 17. August mit (122) Gerda verwechselt und ist bis jetzt nicht ge- funden. Ferner habe ich vergeblich gesucht nach (320) Katharina am 9. August und nach (251) Sophia am IO., 14. und 17. August. Heidelberg, 1901 Aug. 23. Max Way. *) Zunachs: irrthiimlich als Beobachtung des Planeten (31j) Constantia angesehen und als solche schon in A. N. 373 j mitgetheilt. Planet (48) Doris. Corr. der Ephem. Schilow (Bull. St. Pet. 190I Mai): Sept. 8 +20s - 1:7. Gr. I lrn, A. Abetti. Planet (364) Isara. Corr. der Ephem. (Veroff. R. I. Nr. 15): Sept. I 8 + 1~58"+ 1016. U.: Luther. .
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