21238+3721 STFA 55 CD
21h 23m 54.84s +37° 18' 24.6" P.A. 183.00 sep 12.8 mag 11.08,14.80
Coord 2000 |
21238+3721 |
|
Discov num |
STFA 55 |
|
Comp |
CD |
|
Coord arcsec 2000 |
21 23 54.84 +37 18 24.6 |
|
Date first |
1909 |
|
Date last |
2015 |
|
Obs |
7 |
|
Pa first |
184 |
|
Pa last |
183.2 |
|
P.A. Now (θ) |
183.2° |
|
Sep first |
10.6 |
|
Sep last |
12.823 |
|
Sep. Now (ρ) |
12.823" |
|
Mag pri |
11.08 |
|
Mag sec |
14.80 |
|
delta mag (ΔM) |
3.72 |
|
Spectral class |
|
|
Pri motion ra |
+001 |
|
Sec motion ra |
|
|
Pri motion dec |
+003 |
|
Sec motion dec |
|
|
Notes |
N
(See Notes) |
|
Nature of this double is uncertain.
21238+3721 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 203857 |
71280 |
21 23 48 +37 21 05 |
STFA 55 AB |
2012 |
30 |
304 |
364.1 |
6.61 |
6.61 |
0.00 |
|
|
Show |
|
71280 |
21 23 48 +37 21 05 |
STFA 55 AC |
2015 |
8 |
154 |
178.3 |
6.61 |
11.08 |
4.47 |
|
|
Show |
|
71280 |
21 23 48 +37 21 05 |
STFA 55 AF |
2015 |
5 |
201 |
22.8 |
6.61 |
14.80 |
8.19 |
|
|
Show |
|
|
21 23 55 +37 18 25 |
STFA 55 CD |
2015 |
7 |
183 |
12.8 |
11.08 |
14.80 |
3.72 |
|
<=== |
Show |
|
|
21 23 55 +37 18 25 |
STFA 55 CE |
2015 |
7 |
320 |
17.7 |
11.08 |
13.70 |
2.62 |
|
|
Sextuple system
6 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Cygnus |
|
Gaia DR2 |
1963808688696916352 |
|
WDS 21238+3721 STFA 55 CD : NOTES
discov_num |
notes |
refcode |
STFA 55 |
B is BD+36@4537. |
|
|
Toyota et al. (2009) monitored the RV of the A component every 1-2 |
|
|
months between 2003 Mar - 2007 Nov, using a high-dispersion echelle |
|
|
(precision ~10 m/s). The star shows a large RV variation; a Keplerian |
|
|
fit gives a period of 863.8d and an eccentricity of 0.20, which may be |
|
|
induced by a companion of mass ~8.1 Mjup, by stellar rotation or by |
|
|
non-radial pulsation. |
Toy2009 |
REFERENCES
refcode |
metd |
author |
reference |
Toy2009 |
rv - |
Toyota, E., Itoh, Y., Ishiguma, S., Urakawa, S., Murata, D., Oasa, Y., |
2008PASJ...61...19T |
Toy2009 |
|
Matsuyama, H., Funayama, H., Sato, B., & Mukai, T. |
|
Toy2009 |
|
PASJ 61, 19, 2009 |
|
DISCOVERER
idgroup |
discov |
author |
1 |
STF |
Struve, F.G.W. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
21238+3721 |
STFA 55 |
CD |
2000 |
2 |
183 |
12.8 |
11.08 |
14.80 |
|
N |
212354.84+371824.6 |
21238+3721 |
STFA 55 |
CD |
2002 |
4 |
183 |
12.7 |
11.08 |
14.80 |
|
N |
212354.84+371824.6 |
21238+3721 |
STFA 55 |
CD |
2015 |
5 |
183 |
12.8 |
11.08 |
14.80 |
|
N |
212354.84+371824.6 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 21238+3721 STFA 55 CD : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 21238+3721 STFA 55 CD : MEASURES
No records found.
WDS 21238+3721 : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 21238+3721 : ALADIN DSS IMAGE @ 21h 23m 54.84s +37° 18' 24.6"
WDS 21238+3721 STFA 55 CD : NEIGHBORHOODS
|
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
Show |
name |
coord_2000 |
discov# |
comp |
pa |
sep |
dist(') |
Show |
|
21238+3721 |
STFA 55 |
CD |
183 |
12.8 |
1 |
Show |
|
21238+3721 |
STFA 55 |
CE |
320 |
17.7 |
1 |
Show |
|
21238+3721 |
STFA 55 |
AB |
304 |
364.1 |
3 |
Show |
|
21238+3721 |
STFA 55 |
AC |
154 |
178.3 |
3 |
Show |
|
21238+3721 |
STFA 55 |
AF |
201 |
22.8 |
3 |
Show |
|
21249+3711 |
TDS1126 |
|
314 |
1.9 |
14 |
Show |
|
21252+3708 |
SEI1513 |
|
90 |
14.5 |
19 |
Show |
|
21243+3740 |
WSI 7 |
|
44 |
0.1 |
22 |
Show |
|
21241+3741 |
SEI1458 |
|
312 |
7.9 |
23 |
Show |
|
21221+3734 |
ES 2517 |
|
115 |
5.3 |
26 |
Show |
|
21215+3719 |
ROE 24 |
AB |
168 |
10.3 |
29 |
Show |
|
21215+3719 |
ROE 24 |
AD |
266 |
81.7 |
29 |
Show |
|
21215+3719 |
ROE 24 |
AC |
266 |
68.7 |
29 |
Show |
|
21215+3719 |
ROE 23 |
CD |
261 |
13.1 |
30 |
Show |
|
21226+3744 |
COU1820 |
|
319 |
1.4 |
30 |
Show |
|
21264+3712 |
SEI1514 |
|
184 |
12.0 |
31 |
Show |
|
21231+3647 |
ES 2124 |
|
263 |
7.6 |
33 |
Show |
|
21268+3731 |
COU1821 |
Da,Db |
96 |
0.7 |
37 |
Show |
|
21268+3731 |
SEI1516 |
AB |
335 |
3.9 |
37 |
Show |
|
21268+3731 |
HEI9004 |
AC |
275 |
25.5 |
37 |
Show |
|
21268+3731 |
HEI9004 |
AD |
335 |
109.8 |
37 |
Show |
|
21228+3754 |
WIS 349 |
|
176 |
44.9 |
38 |
Show |
|
21215+3648 |
TDT2919 |
|
344 |
1.5 |
43 |
Show |
|
21233+3801 |
ES 2519 |
|
224 |
6.5 |
43 |
Show |
|
21258+3640 |
S 790 |
AB |
28 |
34.5 |
45 |
Show |
|
21258+3640 |
S 790 |
AC |
99 |
53.1 |
45 |
Show |
|
21258+3640 |
FYM 124 |
CD |
84 |
19.4 |
45 |
Show |
|
21278+3715 |
SEI1518 |
|
143 |
15.5 |
46 |
Show |
|
21245+3632 |
ES 2125 |
AB |
34 |
2.0 |
48 |
Show |
|
21245+3632 |
SEI1512 |
AC |
198 |
29.0 |
48 |
Show |
|
21247+3631 |
ES 2126 |
AB |
170 |
4.1 |
49 |
Show |
|
21247+3631 |
WSI 23 |
AC |
84 |
9.0 |
49 |
Show |
|
21235+3627 |
TDT2940 |
|
339 |
1.1 |
52 |
Show |
|
21233+3810 |
ALI 690 |
|
65 |
8.8 |
52 |
Show |
|
21272+3752 |
ES 2520 |
|
238 |
6.2 |
52 |
Show |
|
21252+3629 |
CBL 93 |
|
56 |
12.9 |
52 |
Show |
|
21196+3656 |
TDT2905 |
|
184 |
2.4 |
56 |
Show |
|
21250+3814 |
TDT2950 |
|
200 |
1.6 |
58 |
Show |
|
21195+3745 |
TDT2904 |
|
216 |
2.0 |
59 |
Show |
|
21284+3745 |
TDT2983 |
|
111 |
0.5 |
60 |
Show |
|
21231+3821 |
ALI 689 |
|
107 |
14.6 |
63 |
Show |
|
21271+3627 |
SEI1517 |
|
80 |
16.3 |
65 |
Show |
|
21283+3640 |
CRB 142 |
|
46 |
25.7 |
66 |
Show |
|
21295+3728 |
SEI1519 |
|
181 |
13.8 |
68 |
Show |
|
21287+3755 |
KPP1064 |
|
246 |
8.5 |
68 |
Show |
|
21257+3824 |
TDT2955 |
|
18 |
0.5 |
70 |
Show |
|
21285+3636 |
ALI 443 |
|
298 |
4.3 |
70 |
Show |
|
21244+3607 |
TDS1125 |
|
12 |
1.4 |
72 |
Show |
|
21184+3749 |
SEI1495 |
|
273 |
14.8 |
72 |
Show |
|
21202+3818 |
PTT 18 |
|
124 |
6.6 |
73 |
Show |
|
21199+3815 |
ES 2062 |
|
327 |
4.0 |
76 |
|
|
WDS 21238+3721 : COMPONENTS
|
A |
B |
C |
D |
E |
B |
pa=310.3°
sep=314.62"
| |
C |
pa=154.4°
sep=178.26"
| pa=139.0°
sep=482.88"
| |
D |
pa=156.3°
sep=189.66"
| pa=140.0°
sep=492.25"
| pa=182.5°
sep=12.82"
| |
E |
pa=155.2°
sep=162.10"
| pa=138.8°
sep=466.69"
| pa=326.4°
sep=16.33"
| pa=342.2°
sep=27.73"
| |
F |
pa=197.3°
sep=22.28"
| pa=134.0°
sep=323.99"
| pa=329.1°
sep=162.64"
| pa=331.4°
sep=173.47"
| pa=329.4°
sep=146.33"
|
21238+3721 A
Name |
HD 203857 |
|
Coord arcsec 2000 |
212348.39+372105.4 |
|
Mag |
6.61 |
|
Spectral class |
K5 (yellow-orange) |
|
PmRA |
-6.00 |
|
PmDE |
-7.0 |
|
SAO |
71280 |
|
HIP |
105637 |
|
Tycho2 |
2715-03976-1 |
|
HD |
203857 |
|
HR |
8193 |
|
GC |
29966 |
|
BD |
BD+36 4543 |
|
Tycho2 |
2715-03976-1 |
|
Pflag |
|
|
RAmdeg |
320.95161809 |
|
DEmdeg |
37.35147842 |
|
PmRA |
-5.2 |
|
PmDE |
-7.8 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.0 |
|
E pmDE |
1.0 |
|
EpRAm |
1991.46 |
|
EpDEm |
1991.49 |
|
Num |
14 |
|
Q RAmdeg |
1.0 |
|
Q DEmdeg |
1.0 |
|
Q pmRA |
1.0 |
|
Q pmDE |
0.9 |
|
BTmag |
8.378 |
|
E BTmag |
0.015 |
|
VTmag |
6.607 |
|
E VTmag |
0.009 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
105637 |
|
CCDM |
|
|
RAdeg |
320.95163333 |
|
DEdeg |
37.35149639 |
|
EpRA 1990 |
1.69 |
|
EpDE 1990 |
1.71 |
|
E RAdeg |
3.8 |
|
E DEdeg |
3.6 |
|
Posflg |
|
|
Corr |
0.1 |
|
SAO |
71280 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.001 |
|
DE1950 |
|
|
PmDE1950 |
-0.004 |
|
Vmag |
6.6 |
|
SpType |
K5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
29966 |
|
DM |
BD+36 4543 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
203857 |
|
M HD |
0 |
|
GC |
29966 |
|
RA1950rad |
5.59281891 |
|
DE1950rad |
0.64814889 |
|
PmRA2000 |
-0.0008 |
|
PmDE2000 |
-0.007 |
|
Catalog |
H |
|
HIP |
105637 |
|
Proxy |
|
|
RAhms |
21 23 48.39 |
|
DEdms |
+37 21 05.4 |
|
Vmag |
6.46 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
320.952 |
|
DEdeg |
37.3515 |
|
AstroRef |
|
|
Plx |
3.54 |
|
CCDM |
21237+3722 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
1 |
|
MultFlag |
|
|
Source |
|
|
Qual |
|
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
203857 |
|
BD |
BD+36 4543 |
|
CD |
|
|
CP |
|
|
Dm number |
+36 4543 |
|
VIred |
1.46 |
|
SpType |
K5 |
|
R SpType |
|
|
Coord arcsec 2000 |
212348.39+372105.4 |
|
HIP |
105637 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
RArad |
5.601662794 |
|
DErad |
0.6519066192 |
|
Plx |
3.55 |
|
PmRA |
-5.96 |
|
PmDE |
-7.39 |
|
E RArad |
0.26 |
|
E DErad |
0.29 |
|
E Plx |
0.45 |
|
E pmRA |
0.27 |
|
E pmDE |
0.34 |
|
Hpmag |
6.587 |
|
E Hpmag |
0.0006 |
|
SHp |
0.01 |
|
VA |
0 |
|
BV |
1.472 |
|
E BV |
0.006 |
|
VI |
1.49 |
|
21238+3721 B
Coord arcsec 2000 |
212328.27+372429.0 |
|
Mag |
6.61 |
|
PmRA |
52.00 |
|
PmDE |
25.0 |
|
Calc coord |
yes |
|
21238+3721 C
Coord arcsec 2000 |
212354.84+371824.6 |
|
Coord calc |
212354.84+371824.6 |
|
Mag |
11.08 |
|
PmRA |
1.00 |
|
PmDE |
3.0 |
|
Calc delta mag |
4.47 |
|
21238+3721 D
Coord arcsec 2000 |
212354.79+371811.8 |
|
Mag |
14.8 |
|
Calc delta mag |
8.19 |
|
Calc coord |
yes |
|
21238+3721 E
Coord arcsec 2000 |
212354.08+371838.2 |
|
Mag |
13.7 |
|
PmRA |
-6.00 |
|
PmDE |
-3.0 |
|
Calc delta mag |
7.09 |
|
Calc coord |
yes |
|
21238+3721 F
Coord arcsec 2000 |
212347.83+372044.1 |
|
Mag |
14.8 |
|
Calc delta mag |
8.19 |
|
Calc coord |
yes |
|