33 Doubles in Taurus




Дата канвертавання24.04.2016
Памер78.46 Kb.
33 Doubles in Taurus

Observed 1988-1996 with a C-8 (Celestron) from Columbia, Missouri (USA) and Kansas City, Missouri.


Observer: Richard Harshaw

Dates and sky conditions were not logged at this time in my observations.



STF 383 (ADS 2515; HD 21031; SAO 93414) Rating: 4

Position: 0324+1733 Year of last measure: 1940 Assumed distance (l.y.): 640 Assumed luminosity (suns): 25


Mag Sep PA Spectra Colors Seen Luminosity


A 8.1 n/a n/a G5 Y 20

B 9.5 5 - 121 + R 5



Observations:

Observed at 104x.



Notes:

First measure 5.7" @ 120.

The stars show similar proper motions.

STF 403 (ADS 2584; HD 21775; SAO 93470) Rating: 5

Position: 0331+1947 Year of last measure: 1948 Assumed distance (l.y.): 373 Assumed luminosity (suns): 9


Mag Sep PA Spectra Colors Seen Luminosity


A 8.0 n/a n/a F8 W 7

B 9.6 3 = 175 - F8 W 2



Observations:

Observed at 280x. It is the W-most of three 9m stars in a 35' chain.



Notes:

First measure 2.9" @ 182.

The stars have different proper motions.

STF 406 (ADS 2580; HD 21788; SAO 111233) Rating: 3

Position: 0331+0509 Year of last measure: 1940 Assumed distance (l.y.): 471 Assumed luminosity (suns): 23


Mag Sep PA Spectra Colors Seen Luminosity


A 7.3 n/a n/a F0 W 21

B 10.1 9 = 124 = B 2



Observations:

Observed at 104x.



Notes:

First measure 9.3" @ 124.

The stars have different proper motions.

STF 412 (7 Tau; ADS 2616) Rating: 3

Position: 0334+2428 Year of last measure: 1997


Mag Sep PA Spectra Colors Seen Luminosity


A 5.95 n/a n/a A3 V W

B 5.98 0.7 + 0 -!! A3 V W

C 9.92 22.5 = 55 - bW

Observations:

0515 of 09/22/01 UT; S6; T8; C11. Observed at 654x.



Notes:

AB 1830, no data. 1912 (Aitken) 0.2" @ 128. Orbit calculated. Period is 375 years, semi-major axis is 0.56", and the motion is retrograde.

AC 1821: 22.4" @ 63. 1995 shown, 53 measurements in the interval. C is physical to the system.

STF 414 (H III 78; ADS 2618; HD 22116) Rating: 2

Position: 0334+1948 Year of last measure: 1976


Mag Sep PA Spectra Colors Seen Luminosity


A 8.1 n/a n/a A0 W

B 8.3 7 = 185 - W



Observations:

Observed at 104x.



Notes:

First measure 7.1" @ 186.

The stars have different proper motions.

STF 422 (V711 Tau; ADS 2644; HD 22468; SAO 111291) Rating: 3

Position: 0337+0035 Year of last measure: 1975 Assumed distance (l.y.): 94 Assumed luminosity (suns): 3.24


Mag Sep PA Spectra Colors Seen Luminosity


A 5.9 n/a n/a G5 IV O 3.03

B 8.8 6 = 259 + K1 IV Y 0.21



Observations:

Observed at 207x. Some observers report Y and B. Webb saw them as D and B.

The dY star 10 Tau is 11' S.

Notes:

Star A is a spectroscopic binary with a 2.8378 day period and a radio flare stare (V711 Tau, an RS CVn type).

The visual binary orbital period is about 2,101 years (Hopmann, 1964).

First measure: 6.1" @ 232. In 1903, Burnham obtained a PA of 249.



STF 430 (HD 22428; SAO 39005) Rating: 1

Position: 0338+4448 Year of last measure: 1935 Assumed distance (l.y.): 467 Assumed luminosity (suns): 21.5


Mag Sep PA Spectra Colors Seen Luminosity


A 8.0 n/a n/a A0 W 10.8

B 26.6 55

C 8.0 37 = 301 - A0 W 10.8

Observations:

Observed at 83x. This pair looks like the eyes of a spook.

Webb saw them as Y!, ? and ?.

Very rich field.



Notes:

First measure AB, 26.6" @ 55.

First measure AC, 37.4" @ 302.

The stars show similar proper motions.



STF 427 (ADS 2679; HD 22766; SAO 76071) Rating: 1

Position: 0341+2846 Year of last measure: 1954 Assumed distance (l.y.): 500 Assumed luminosity (suns): 41


Mag Sep PA Spectra Colors Seen Luminosity


A 6.9 n/a n/a A0 Y 30

B 8.1 7 = 208 - B 11



Observations:

Observed at 65x. Very rich field.



Notes:

First measure 6.7" @ 209.

The stars share common proper motion.

STF 435 (ADS 2708; HD 23075; SAO 76094) Rating: 3

Position: 0343+2541 Year of last measure: 1934 Assumed distance (l.y.): 157 Assumed luminosity (suns): 3.4


Mag Sep PA Spectra Colors Seen Luminosity


A 7.1 n/a n/a F5 Y 2.8

B 8.8 13 2 R 0.6



Observations:

Observed at 104x.



Notes:

The stars show a similar, but small, proper motion.



STF 452 (30 Tau; ADS 2778; HD 23793; SAO 93611) Rating: 4

Position: 0348+1108 Year of last measure: 1933 Assumed distance (l.y.): 570 Assumed luminosity (suns): 242


Mag Sep PA Spectra Colors Seen Luminosity


A 5.1 n/a n/a B3 V+F5 V B 240

B 10.2 9 = 59 + O? 2



Observations:

Observed at 65x. Some observers report bW and bW or Y and B. Webb saw them as bG and ? or yW and gW.



Notes:

This star is a member of the Cas-Tau OB1 Association and appears to be an old disk population runaway star.

First measure (1830) by F. W. Struve: 8.9" @ 58.

STF 479 (H N 93; ADS 2926; HD 25201; SAO 76388) Rating: 1

Position: 0401+2312 Year of last measure: 1954 Assumed distance (l.y.): 1,080 Assumed luminosity (suns): 376


Mag Sep PA Spectra Colors Seen Luminosity


A 6.5 n/a n/a B9 V Y 200

B 6.9 7 = 127 - O 160

C 9.4 58 = 240 - F0 B 16

Observations:

Observed at 65x. Rich field. Webb saw them as W, W and ?.



Notes:

Hipparcos/Tycho data show different distances for these stars; they may be an optical system.

First measure AB, 7.4" @ 129.

First measure AC, 58" @241.



OS 72 (ADS 3006; HD 26038; SAO 93777) Rating: e

Position: 0408+1720 Year of last measure: 1991


Mag Sep PA Spectra Colors Seen Luminosity


A 6.2 n/a n/a K5 IIIb dO!!

B 9.1 4 - 328 + dB



Observations:

Observed at 280x.



Notes:

The primary is an infra-red source.

1854: 4.6" @ 327. 28 measurements were made between 1854 and 1991.

STF 495 (ADS 2999; HD 26015; SAO 93775) Rating: 4

Position: 0408+1509 Year of last measure: 1942 Assumed distance (l.y.): 153 Assumed luminosity (suns): 7.9


Mag Sep PA Spectra Colors Seen Luminosity


A 6.0 n/a n/a F3 V W 7.3

B 8.8 4 = 221 = B 0.6



Observations:

Observed at 207x.



Notes:

The primary is probably a Delta Scuti variable and is also a spectroscopic binary.

It is a member of the Hyades group.

First measure 3.6" @ 221.

The stars show common proper motion and similar radial velocity.

STF 494 (ADS 3019; HD 26128; SAO 76476) Rating: 1

Position: 0409+2306 Year of last measure: 1960 Assumed distance (l.y.): 800 Assumed luminosity (suns): 220


Mag Sep PA Spectra Colors Seen Luminosity


A 6.5 n/a n/a A3 W 130

B 6.9 5 = 187 + A3 W 90



Observations:

Observed at 104x.



Notes:

First measure 5.1" @ 186.

The stars show a similar, but small, proper motion.

STF 515 (ADS 3065; HD 26678; SAO 111669) Rating: 4

Position: 0413+0252 Year of last measure: 1830 Assumed distance (l.y.): 317 Assumed luminosity (suns): 6


Mag Sep PA Spectra Colors Seen Luminosity


A 8.2 n/a n/a F5 W 4

B 9.2 3.3 - 42 - W 2



Observations:

Observed at 207x. It looks fainter than the listed magnitudes.



Notes:

First measure 3.5" @ 44.



STF 517 (ADS 3095; HD 26991; SAO 111705) Rating: 3

Position: 0416+0027 Year of last measure: 1934 Assumed distance (l.y.): 530 Assumed luminosity (suns): 35


Mag Sep PA Spectra Colors Seen Luminosity


A 7.2 n/a n/a A0 W 30

B 9.1 3 12 O? 5



Observations:

Observed at 207x.


STF 528 (Chi Tau; 59 Tau; ADS 3161; HD 27638; SAO 76573) Rating: 3

Position: 0423+2538 Year of last measure: 1990 Assumed distance (l.y.): 268 Assumed luminosity (suns): 44.2


Mag Sep PA Spectra Colors Seen Luminosity


A 5.4 n/a n/a B9 V B 39

B 7.6 19 = 24 - G 5.2



Observations:

Observed at 83x. Webb saw them as W and bW.



Notes:

This star is spinning at 350 kps.

First measure: 19.3" @ 25.

The stars show similar proper motions.



STF 534 (62 Tau; ADS 3179; HD 27778; SAO 76591) Rating: 3

Position: 0424+2418 Year of last measure: 1991 Assumed distance (l.y.): 730 Assumed luminosity (suns): 156


Mag Sep PA Spectra Colors Seen Luminosity


A 6.2 n/a n/a B3 V Y 140

B 8.6 30 + 290 = A0 B 15

E, etc. b: 12.0 Bb: 111 Bb: 330 ? 1

Observations:

Observed at 83x. Webb saw them as W and ?, and wrote, "fine field."



Notes:

First measure 28.9" @ 290.



Delta 3 Tau (68 Tau; Kuiper 17; AC = H VI 101; V776 Tau; ADS 3206; HD 27962; SAO 93923) Rating: 5

Position: 0425+1755 Year of last measure: 1958 Assumed distance (l.y.): 148 Assumed luminosity (suns): 38.3


Mag Sep PA Spectra Colors Seen Luminosity


A 4.2 n/a n/a A2 IV W 36

B 7.5 1.4 333 + ? 1.7

C 8.7 77 233 ? 0.6

Observations:

Observed at 104x.



Notes:

The primary is 2.1 times as large as the Sun and is a "blue straggler".

Hind's Variable Nebula (NGC 1555) lies nearby (1422+1932), but is very elusive. Hind discovered it in 1852 with a 7" telescope, and, like Hubble's Nebula, its brightness varies due to the variable star (T Tauri) that illuminates it.

T Tauri is a member of the Hyades cluster (star #56) and is a spectroscopic binary with a 57.25 day period.



STF 546 (ADS 3224; HD 28139; SAO 93939) Rating: 3

Position: 0427+1907 Year of last measure: 1954 Assumed distance (l.y.): 214 Assumed luminosity (suns): 3.5


Mag Sep PA Spectra Colors Seen Luminosity


A 7.7 n/a n/a F5 V Y 3

B 9.7 7 184 - G0 O 0.5



Observations:

Observed at 104x.



Notes:

The stars share a large common proper motion.



SI 10 (Theta 2 Tau; 78 Tau; HD 28319; SAO 93957) Rating: 5

Position: 0429+1552 Year of last measure: 1921 Assumed distance (l.y.): 149 Assumed luminosity (suns): 130.2


Mag Sep PA Spectra Colors Seen Luminosity


A 3.4 n/a n/a A7 III W 77

B 3.8 337 346 K0 II Y 53.2



Observations:

Observed at 104x.



Notes:

Star A is a spectroscopic binary (140.728 day period) and occultation binary; it is 50 times the size of the sun. It is also a probable Delta Scuti star and member of the Hyades cluster.

The stars share common proper motion.

STF 559 (ADS 3297; HD 28867; SAO 94002) Rating: 1

Position: 0433+1801 Year of last measure: 1991 Assumed distance (l.y.): 423 Assumed luminosity (suns): 69


Mag Sep PA Spectra Colors Seen Luminosity


A 6.2 n/a n/a B9 IVn W 47

B 7.0 3 = 278 - W 22



Observations:

Observed at 207x.



Notes:

First measure (1830) by F. W. Struve: 3" @ 279.

The stars show similar proper motions.

STF 572 (ADS 3353; HD 29364; SAO 76682) Rating: 4

Position: 0438+2656 Year of last measure: 1991 Assumed distance (l.y.): 228 Assumed luminosity (suns): 14.3


Mag Sep PA Spectra Colors Seen Luminosity


A 6.6 n/a n/a F2 V W 9.4

B 7.3 4 + 191 - F3 V W 4.9



Observations:

Observed at 207x. Some observers note Y and B. Webb: Y.



Notes:

Star A is a spectroscopic binary.

First measure (1830) by F. W. Struve: 3.2" @ 210.

South 455 (Tau Tau; 94 Tau; OSS 54; Hough 642; HD 29763; SAO 76721) Rating: 4

Position: 0442+2257 Year of last measure: 1926 Assumed distance (l.y.): 401 Assumed luminosity (suns): 262


Mag Sep PA Spectra Colors Seen Luminosity


A 4.3 n/a n/a B3 V W 244

C 7.1 63 212 B 18



Observations:

Observed at 83x. Webb saw them as W and B.



Notes:

The primary rotates at 187 km/sec and is a spectroscopic binary with a 2.9565 day period. The AB period is something like around 28 years (?). The system belongs to the Cas-Tau OB1 Association.

Hipparcos/Tycho data show different distances for these stars; they may be an optical system.

STF 623 (ADS 3587; HD 31806; SAO 76880) Rating: 3

Position: 0500+2719 Year of last measure: 1934 Assumed distance (l.y.): 451 Assumed luminosity (suns): 29


Mag Sep PA Spectra Colors Seen Luminosity


A 7.0 n/a n/a B7 V W 25

B 9.1 21 + 206 + A0 V B 4



Observations:

Observed at 83x.

Franks: W, B.

Notes:

First measure: 20.4" @ 205.

The stars share common proper motion.

STF 670 (ADS 3854; HD 34251; SAO 94431) Rating: 3

Position: 0517+1826 Year of last measure: 1994 Assumed distance (l.y.): 1,100 Assumed luminosity (suns): 150


Mag Sep PA Spectra Colors Seen Luminosity


A 7.2 n/a n/a B3 W 100

B 8.2 2.8 + 164 - W 50



Observations:

Observed at 280x. Some observers report both as B. Webb saw them as W and bW.



Notes:

First measure 2.3" @ 171. 1908 (Bowyer), 2.3" @ 167.



STF 686 (ADS 3922; SAO 77122) Rating: 2

Position: 0521+2402 Year of last measure: 1963 Assumed distance (l.y.): 174 Assumed luminosity (suns): 2.5


Mag Sep PA Spectra Colors Seen Luminosity


A 7.7 n/a n/a F2 pO 2

B 9.1 9 = 223 + pB 0.5



Observations:

Observed at 104x.



Notes:

First measure 9.2" @ 220.

The stars share common proper motion.

STF 716 (118 Tau; STF 719?; ADS 4068; HD 35943; SAO 77201) Rating: 2

Position: 0529+2508 Year of last measure: 1985 Assumed distance (l.y.): 434 Assumed luminosity (suns): 106.34


Mag Sep PA Spectra Colors Seen Luminosity


A 5.8 n/a n/a B9 V Y 72

B 6.6 5 = 208 + A0 V B? 34

C 11.6 141 99 ? 0.34

Observations:

Observed at 83x. Some observers note W and R. Webb saw them as W and bW.



Notes:

This star rotates at 133 kps.

First measure (1829) by F. W. Struve: 4.9" @ 197. 1914 (Phillips), PA 201.

STF 730 (ADS 4131; HD 36408; SAO 94630) Rating: 2

Position: 0532+1703 Year of last measure: 1993 Assumed distance (l.y.): 1,120 Assumed luminosity (suns): 650


Mag Sep PA Spectra Colors Seen Luminosity


A 6.0 n/a n/a A2 IIIe W 400

B 6.5 10 = 141 - B7 III W 250



Observations:

Observed at 83x. Striking! Webb saw them as yW and bW.

Moderate field.

Notes:

Star A is a spectroscopic binary.

First measure 9.8" @ 142.

The stars show a similar, but small, proper motion.



STF 749 (Worley; ADS 4208; HD 37098; SAO 77322) Rating: 3

Position: 0537+2655 Year of last measure: 1966 Assumed distance (l.y.): 478 Assumed luminosity (suns): 132


Mag Sep PA Spectra Colors Seen Luminosity


A 5.8 n/a n/a B8 IV W 87

B 6.5 1 + 333 - B8 IV W 45



Observations:

Observed at 697x. Very even. This is a good test of your optics, your skill, and the sky.



Notes:

First measure 0.7" @ 23. 1914 (Phillips), 0.9" @ 347.



STF 777 (ADS 4295; HD 37980) Rating: 4

Position: 0543+2213 Year of last measure: 1830 Assumed distance (l.y.): 109 Assumed luminosity (suns): 0.3


Mag Sep PA Spectra Colors Seen Luminosity


A 9.3 n/a n/a A0 W 0.2

B 9.7 5 = 85 = B 0.1



Observations:

0430, 1-1-00 UT S8; T8; Observed at 104x; an 8m star is 12' NNW.



Notes:


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