Sagitta (la Flèche)
Le catalogue
ÉTOILES DOUBLES
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Désignation AD (2000.0) DE m1 m2 Écart PA Date Note Spectre
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HJ 2851 AB 19 01 57.6 +19 07 30 6.8 11.1 15.3" 131° 1926 G9III
HJ 2851 AC 19 01 57.6 +19 07 30 6.9 9.2 44.2" 298° 1926
STF 2504 AB 19 20 59.9 +19 08 44 7.0 9.0 8.8" 283° 2002 F5V
J 138 AC 19 38 09.7 +17 14 36 6.7 11.4 38.2" 128° 1985
H N 84 19 39 25.3 +16 34 16 6.4 9.5 28.2" 301° 2002 [ 1] K4Ib
STF 2585 AB-C Dzêta 19 48 58.6 +19 08 31 5.0 9.0 8.3" 310° 2002
BU 1477 CD 13 19 59 56.2 +17 31 49 5.4 11.8 28.5" 207° 1966 [ 2] M4IIIa
BU 1477 CE 19 59 56.2 +17 31 49 5.4 11.5 47.1" 116° 1924 M4IIIa
STT 396 20 03 16.4 +18 30 04 6.1 10.4 46.7" 207° 1991 K3II-III
STT 592 AC 15 20 04 06.2 +17 04 13 5.9 6.9 213.9" 333° 2001 [ 3]
STF 2637 AB Thêta 20 09 56.6 +20 54 54 6.6 8.9 11.5" 331° 2002 [ 4] F3V
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[ 1] H N 84. B is BD+16@3935. Proper motion of B -004 -008.
BDS 9484, H V 51 same star. A is a spectroscopic
binary.
[ 2] AB: H IV 100. Also known as STF2608. B is BD+17@4184.
13 Sge. A is the irregular variable VZ Sge.
[ 3] 15 Sge. B is BD+16@4117a.
[ 4] Theta Sge. B is BD+20@4455.
BC: Mt. Wilson spectral type of B is G3, C is K1.
ÉTOILES VARIABLES
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Nom AD (2000) DE Type Max Min T (Jul) P (jours) F Spectre
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SV 19 08.19 +17 37.7 RCB 11.5 16.2 p C0-3,2-3(R2)
DM 19 15.08 +18 26.5 EB/DM 11.0 12.0 p 2424822.180 2.775320 A0
U 19 18.81 +19 36.7 EA/SD 6.45 9.28 V 2417130.4114 3.38061933 17 B8V+G2IV-III
W 19 19.54 +17 12.4 M 8.8 14.4 : v 2444423. 278.26 M4e-M6.5
S 19 56.02 +16 38.1 Cd 5.24 6.04 V 2442678.792 8.382086 31 F6Ib-G5Ib
HU 20 03.70 +21 29.8 Lb 7.8 8.8 p M0
X 20 05.09 +20 38.9 SR 7.0 9.7 v 2425648. 196 50 C6-,5(N3)
WZ 20 07.61 +17 42.3 UGSU+E+ZZ 7.0 15.53 B 1900 DAep(UG)
ST 20 11.71 +20 37.2 M 10.0 14.9 v 2445691. 192.31 42 M4e
R 20 14.07 +16 43.6 RVb 8.0 10.4 v 2443830. 70.770 G0Ib-G8Ib
V 20 20.24 +21 06.1 E+Nl 8.6 13.9 v 2437889.9154 0.514195 pec(cont+e)
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CIEL PROFOND
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Nom AD (2000) DE Type V B Dim. Dist. Notes
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PK 052+7.1 18 59.1 +20 37 NP 13.6 4"
H 20 19 53.1 +18 20 AO III2p 7.7 ( 9.8) 7' E 12.5
M 71 19 53.8 +18 47 AG 8.3 7.2' 4.0 kpc
NGC 6879 20 10.5 +16 55 NP 2a 12.5 13.0 5" 5.1 kpc *=15p
NGC 6886 20 12.7 +19 59 NP 2+3 11.4 12.2 4"/9x6" 3.1 kpc *=15.7
IC 4997 20 20.2 +16 45 NP 1 10.5 11.6 2" 1.5 kpc *=15.4
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