20591+0418 STF 2737 BC
20h 59m 04.46s +04° 17' 36.6" P.A. 66.00 sep 10.6 mag 6.31,7.05 Sp F6IV dist. 54.08 pc (176.41 l.y.)
Coord 2000 |
20591+0418 |
|
Discov num |
STF2737 |
|
Comp |
BC |
|
Coord arcsec 2000 |
20 59 04.46 +04 17 36.6 |
|
Date first |
1780 |
|
Date last |
2019 |
|
Obs |
19 |
|
Pa first |
84 |
|
Pa last |
65.6 |
|
P.A. Now (θ) |
65.6° |
|
Sep first |
9.4 |
|
Sep last |
10.578 |
|
Sep. Now (ρ) |
10.578" |
|
Mag pri |
6.31 |
|
Mag sec |
7.05 |
|
delta mag (ΔM) |
0.74 |
|
Spectral class |
F6IV (yellow-white) |
|
Pri motion ra |
-113 |
|
Sec motion ra |
-113 |
|
Pri motion dec |
-150 |
|
Sec motion dec |
-150 |
|
Notes |
N
V
(See Notes, Proper motion indicates physical) |
|
This double is physical.
20591+0418 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
126428 |
20 59 05 +04 17 38 |
STF 2737 AB |
2021 |
487 |
125 |
0.0 |
5.96 |
6.31 |
0.35 |
Y |
|
Show |
Eps Equ |
126428 |
20 59 05 +04 17 38 |
STF 2737 AB,C |
2019 |
306 |
67 |
10.6 |
5.30 |
7.05 |
1.75 |
|
|
Show |
|
126428 |
20 59 05 +04 17 38 |
STF 2737 AD |
2013 |
4 |
293 |
69.3 |
5.96 |
13.10 |
7.14 |
|
|
Show |
|
126428 |
20 59 04 +04 17 37 |
STF 2737 BC |
2019 |
19 |
66 |
10.6 |
6.31 |
7.05 |
0.74 |
|
<=== |
Quadruple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Equuleus |
|
SAO |
126428 |
|
HIP |
103569 |
|
Tycho2 |
0521-02814-2 |
|
HD |
199766 |
|
HR |
8034 |
|
GC |
29276 |
|
ADS |
14499 |
|
BD |
BD+03 4473 |
|
Bayer |
Epsilon Equulei |
|
Bayer name |
Eps Equ |
|
Flamsteed |
1 Equulei |
|
Flamsteed name |
1 Equ |
|
Distance |
54.08 |
|
Distance ly |
176.41 |
|
Bayer greek |
ε Equ |
|
WDS 20591+0418 STF 2737 BC : NOTES
discov_num |
notes |
refcode |
STF2737 |
eps Equ = 1 Equ. Primary is 2.03d SB1. |
Tok2006 |
|
AC: Star C (mag. 7.3, dF4) is in slow retrograde motion at 10". |
|
|
Period of AC estimated at 5200y. |
Tok2006 |
|
AB,C: Hyperbolic orbit by Zeller (1965). Ephemeris covers 1831-2042. |
Zel1965 |
|
sigma = areal constant in the true orbit = 0.1952 arcsec^2/yr |
|
|
q = periastron distance in the true orbit = 10".78 |
|
|
AB,C: HJL 288. |
HJL1986 |
|
BC: H 3 21. |
MEv2010 |
|
AB: Malkov et al. (2012) derive dynamical, photometric, and |
|
|
spectroscopic masses 4.17 +/- 2.42, 2.73, and 1.33 Msun, respectively. |
Mlk2012 |
REFERENCES
refcode |
metd |
author |
reference |
HJL1986 |
Pa - |
Halbwachs, J.L. |
1986A&AS...66..131H |
HJL1986 |
|
A&AS 66, 131, 1986 |
|
HJL1986 |
|
(Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added |
|
HJL1986 |
|
only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113) |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
Mlk2012 |
|
A&A 546, A69, 2012 |
|
Tok2006 |
A j |
Tokovinin, A., Thomas, S., Sterzik, M., & Udry, S. |
2006A&A...450..681T |
Tok2006 |
+E2 |
A&A 450, 681, 2006 |
|
Zel1965 |
orb - |
Zeller, G. |
1965AnWie..26..111Z |
Zel1965 |
|
Ann. Sternw. Wien 26, 111, 1965 |
|
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 |
20591+0418 |
STF2737 |
BC |
2006 |
12 |
67 |
10.5 |
6.31 |
7.05 |
|
N D |
205904.46+041736.6 |
20591+0418 |
STF2737 |
BC |
2011 |
13 |
67 |
10.5 |
6.31 |
7.05 |
|
N D |
205904.46+041736.6 |
20591+0418 |
STF2737 |
BC |
2012 |
15 |
67 |
10.5 |
6.31 |
7.05 |
|
N D |
205904.46+041736.6 |
20591+0418 |
STF2737 |
BC |
2014 |
18 |
67 |
10.5 |
6.31 |
7.05 |
F6IV |
NV |
205904.46+041736.6 |
20591+0418 |
STF2737 |
BC |
2019 |
19 |
66 |
10.6 |
6.31 |
7.05 |
F6IV |
NV |
205904.46+041736.6 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 20591+0418 STF 2737 BC : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 20591+0418 STF 2737 BC : MEASURES
No records found.
WDS 20591+0418 : 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 20591+0418 : ALADIN DSS IMAGE @ 20h 59m 04.46s +04° 17' 36.6"
WDS 20591+0418 STF 2737 BC : 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 |
|
20591+0418 |
STF2737 |
BC |
66 |
10.6 |
1 |
Show |
|
20591+0418 |
STF2737 |
AB |
125 |
0.0 |
1 |
Show |
|
20591+0418 |
STF2737 |
AD |
293 |
69.3 |
1 |
Show |
|
20591+0418 |
STF2737 |
AB,C |
67 |
10.6 |
1 |
Show |
|
20580+0420 |
UC 4346 |
|
205 |
22.4 |
17 |
Show |
|
21002+0406 |
HEI 820 |
|
65 |
2.3 |
21 |
Show |
|
20582+0356 |
BAR 13 |
AB |
87 |
1.6 |
25 |
Show |
|
20582+0356 |
BAR 13 |
AC |
249 |
20.6 |
25 |
Show |
|
20582+0356 |
WSI 39 |
AD |
280 |
26.4 |
25 |
Show |
|
20582+0356 |
WSI 39 |
CD |
330 |
13.6 |
25 |
Show |
|
21009+0419 |
BAL2553 |
|
110 |
10.6 |
27 |
Show |
|
20581+0352 |
BAL2550 |
|
157 |
3.4 |
30 |
Show |
|
20582+0447 |
AG 268 |
|
287 |
12.5 |
33 |
Show |
|
20564+0422 |
CVR 877 |
|
125 |
26.3 |
41 |
Show |
|
21020+0436 |
CVR 884 |
|
312 |
11.4 |
48 |
Show |
|
20559+0435 |
UC 4332 |
|
60 |
52.9 |
50 |
Show |
|
20557+0432 |
STF2735 |
|
282 |
2.0 |
53 |
Show |
|
21020+0346 |
HO 148 |
|
201 |
2.2 |
55 |
Show |
|
21032+0411 |
BAL2554 |
|
307 |
21.3 |
63 |
Show |
|
21021+0329 |
CVR 236 |
|
279 |
69.7 |
67 |
Show |
|
21024+0513 |
A 615 |
|
129 |
3.5 |
74 |
Show |
|
20541+0357 |
HJ 3005 |
|
300 |
30.5 |
77 |
Show |
|
21041+0359 |
TOK 371 |
|
272 |
0.1 |
78 |
Show |
|
21017+0310 |
BAL2042 |
|
128 |
8.1 |
79 |
Show |
|
20552+0314 |
BAL2040 |
|
68 |
8.4 |
86 |
Show |
|
21009+0257 |
HJ 3006 |
|
292 |
1.8 |
86 |
Show |
|
20551+0314 |
UC 4324 |
|
290 |
9.9 |
87 |
Show |
|
20561+0535 |
TDT2642 |
|
77 |
0.6 |
89 |
Show |
|
20537+0336 |
BAL2548 |
|
258 |
7.5 |
91 |
Show |
|
20543+0321 |
BAL2039 |
|
28 |
14.7 |
92 |
Show |
|
20530+0427 |
TDT2603 |
|
281 |
1.7 |
92 |
Show |
|
21014+0542 |
ELP 47 |
|
25 |
6.3 |
92 |
Show |
|
20595+0242 |
HJ 928 |
|
74 |
16.5 |
97 |
Show |
|
21047+0332 |
SE 3 |
Aa,Ab |
153 |
0.6 |
97 |
Show |
|
21047+0332 |
STF2749 |
A,BC |
179 |
3.2 |
97 |
Show |
|
21047+0332 |
SE 3 |
AD |
78 |
114.3 |
97 |
Show |
|
21047+0332 |
STF2749 |
AC |
176 |
3.5 |
97 |
Show |
|
21047+0332 |
SE 3 |
BC |
136 |
0.7 |
97 |
Show |
|
20525+0416 |
TDT2595 |
|
359 |
0.7 |
99 |
Show |
|
21006+0554 |
GRV 403 |
|
116 |
33.5 |
101 |
Show |
|
20529+0337 |
BAL2547 |
|
220 |
8.5 |
101 |
Show |
|
20588+0600 |
UC 4347 |
|
31 |
40.4 |
103 |
Show |
|
21041+0300 |
WSI 6 |
AB |
53 |
0.1 |
109 |
Show |
|
21041+0300 |
DSG 6 |
Aa,Ab |
155 |
0.0 |
109 |
Show |
|
21046+0530 |
BUP 223 |
|
252 |
82.5 |
110 |
Show |
|
21033+0245 |
BAL2043 |
|
205 |
18.4 |
113 |
Show |
|
20516+0431 |
KPP1501 |
|
50 |
11.3 |
113 |
Show |
|
20535+0300 |
HEI 819 |
|
135 |
0.2 |
114 |
Show |
|
20528+0311 |
HLD 43 |
|
9 |
2.2 |
115 |
Show |
|
20526+0517 |
GCB 75 |
|
101 |
3.3 |
115 |
Show |
|
20529+0529 |
GCB 60 |
|
152 |
6.5 |
118 |
|
|
WDS 20591+0418 : COMPONENTS
|
A |
B |
C |
B |
pa=224.9°
sep=1.69"
| |
C |
pa=66.4°
sep=10.56"
| pa=63.5°
sep=12.15"
| |
D |
pa=292.9°
sep=69.12"
| pa=294.2°
sep=68.51"
| pa=287.1°
sep=76.78"
|
20591+0418 A
Coord arcsec 2000 |
205904.54+041737.8 |
|
Mag |
5.96 |
|
Spectral class |
F6IV (yellow-white) |
|
PmRA |
-102.00 |
|
PmDE |
-152.0 |
|
SAO |
126428 |
|
HIP |
103569 |
|
Tycho2 |
0521-02814-1 |
|
HD |
199766 |
|
HR |
8034 |
|
GC |
29276 |
|
ADS |
14499 |
|
BD |
BD+03 4473 |
|
Bayer |
Epsilon Equulei |
|
Bayer name |
Eps Equ |
|
Flamsteed |
1 Equulei |
|
Flamsteed name |
1 Equ |
|
Tycho2 |
0521-02814-1 |
|
Pflag |
P |
|
RAmdeg |
314.76857872 |
|
DEmdeg |
4.29350516 |
|
PmRA |
-102.0 |
|
PmDE |
-152.0 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.4 |
|
E pmDE |
1.4 |
|
EpRAm |
1991.69 |
|
EpDEm |
1991.18 |
|
Num |
6 |
|
Q RAmdeg |
2.2 |
|
Q DEmdeg |
1.5 |
|
Q pmRA |
2.2 |
|
Q pmDE |
1.4 |
|
BTmag |
6.482 |
|
E BTmag |
0.014 |
|
VTmag |
5.963 |
|
E VTmag |
0.010 |
|
Prox |
9 |
|
TYC |
T |
|
HIP |
103569 |
|
CCDM |
A |
|
RAdeg |
314.76890806 |
|
DEdeg |
4.29385139 |
|
EpRA 1990 |
1.80 |
|
EpDE 1990 |
1.30 |
|
E RAdeg |
3.6 |
|
E DEdeg |
4.0 |
|
Posflg |
D |
|
Corr |
-0.1 |
|
SAO |
126428 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0075 |
|
DE1950 |
|
|
PmDE1950 |
-0.144 |
|
Vmag |
5.3 |
|
SpType |
F5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
29276 |
|
DM |
BD+03 4473 |
|
DMcomp |
AB |
|
BDsup |
|
|
HD |
199766 |
|
M HD |
0 |
|
GC |
29276 |
|
RA1950rad |
5.48284295 |
|
DE1950rad |
0.07157063 |
|
PmRA2000 |
-0.0073 |
|
PmDE2000 |
-0.148 |
|
Catalog |
H |
|
HIP |
103569 |
|
Proxy |
H |
|
RAhms |
20 59 04.54 |
|
DEdms |
+04 17 37.8 |
|
Vmag |
5.3 |
|
VarFlag |
|
|
R Vmag |
G |
|
RAdeg |
314.769 |
|
DEdeg |
4.29385 |
|
AstroRef |
A |
|
Plx |
16.59 |
|
CCDM |
20591+0418 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
P |
|
Qual |
A |
|
M HIP |
AB |
|
Theta |
286 |
|
Rho |
0.935 |
|
HD |
199766 |
|
BD |
BD+03 4473 |
|
CD |
|
|
CP |
|
|
Dm number |
+03 4473 |
|
VIred |
0.55 |
|
SpType |
F5III... |
|
R SpType |
|
|
Coord arcsec 2000 |
205904.54+041737.8 |
|
HIP |
103569 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
5.493754204 |
|
DErad |
0.0749417644 |
|
Plx |
18.49 |
|
PmRA |
-115.75 |
|
PmDE |
-151.7 |
|
E RArad |
1.31 |
|
E DErad |
0.69 |
|
E Plx |
1.35 |
|
E pmRA |
1.52 |
|
E pmDE |
0.7 |
|
Hpmag |
5.314 |
|
E Hpmag |
0.0013 |
|
SHp |
0.016 |
|
VA |
0 |
|
BV |
0.464 |
|
E BV |
0.027 |
|
VI |
0.55 |
|
Ccdm |
20591+0418 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
-1.55 |
|
DDEs |
-22.6 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
4 |
|
Vmag |
5.8 |
|
Sp |
F5 |
|
PmNote |
* |
|
PmRA |
-117 |
|
PmDE |
-135 |
|
Dm number |
+03 4473 |
|
Cat1 |
BD |
|
Name2 |
+04 2845 |
|
Cat2 |
AGK2/3 |
|
HD |
199766 |
|
M HD |
|
|
ADS BDS |
A14499 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
20541N0355A |
|
HIC |
103569 |
|
20591+0418 B
Coord arcsec 2000 |
205904.46+041736.6 |
|
Coord calc |
205904.46+041736.6 |
|
Mag |
6.31 |
|
Spectral class |
F6IV (yellow-white) |
|
PmRA |
-113.00 |
|
PmDE |
-150.0 |
|
Tycho2 |
0521-02814-2 |
|
Calc delta mag |
0.35 |
|
Tycho2 |
0521-02814-2 |
|
Pflag |
P |
|
RAmdeg |
314.76857872 |
|
DEmdeg |
4.29350516 |
|
PmRA |
-102.0 |
|
PmDE |
-152.0 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.4 |
|
E pmDE |
1.4 |
|
EpRAm |
1991.69 |
|
EpDEm |
1991.18 |
|
Num |
6 |
|
Q RAmdeg |
2.2 |
|
Q DEmdeg |
1.5 |
|
Q pmRA |
2.2 |
|
Q pmDE |
1.4 |
|
BTmag |
6.770 |
|
E BTmag |
0.015 |
|
VTmag |
6.313 |
|
E VTmag |
0.010 |
|
Prox |
9 |
|
TYC |
T |
|
HIP |
103569 |
|
CCDM |
B |
|
RAdeg |
314.76865694 |
|
DEdeg |
4.29390639 |
|
EpRA 1990 |
1.79 |
|
EpDE 1990 |
1.32 |
|
E RAdeg |
3.7 |
|
E DEdeg |
4.3 |
|
Posflg |
D |
|
Corr |
-0.1 |
|
Ccdm |
20591+0418 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
* |
|
Note2 |
|
|
Discov num |
STF2737 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1835 |
|
Theta |
|
|
Rho |
|
|
Obs |
99 |
|
Vmag |
6.3 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A14499 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
20541N0355B |
|
HIC |
103569 |
|
20591+0418 C
Coord arcsec 2000 |
205905.19+041742.0 |
|
Mag |
7.05 |
|
Spectral class |
dF4 |
|
PmRA |
-116.00 |
|
PmDE |
-144.0 |
|
HIP |
103571 |
|
Tycho2 |
0521-02813-1 |
|
Calc delta mag |
1.09 |
|
Calc coord |
yes |
|
Tycho2 |
0521-02813-1 |
|
Pflag |
|
|
RAmdeg |
314.77128060 |
|
DEmdeg |
4.29461464 |
|
PmRA |
-115.6 |
|
PmDE |
-143.9 |
|
E RAmdeg |
7 |
|
E DEmdeg |
7 |
|
E pmRA |
1.3 |
|
E pmDE |
1.3 |
|
EpRAm |
1991.34 |
|
EpDEm |
1991.09 |
|
Num |
10 |
|
Q RAmdeg |
1.1 |
|
Q DEmdeg |
1.3 |
|
Q pmRA |
1.2 |
|
Q pmDE |
1.2 |
|
BTmag |
7.570 |
|
E BTmag |
0.016 |
|
VTmag |
7.052 |
|
E VTmag |
0.011 |
|
Prox |
103 |
|
TYC |
T |
|
HIP |
103571 |
|
CCDM |
C |
|
RAdeg |
314.77154611 |
|
DEdeg |
4.29495306 |
|
EpRA 1990 |
1.76 |
|
EpDE 1990 |
1.54 |
|
E RAdeg |
6.8 |
|
E DEdeg |
7.3 |
|
Posflg |
|
|
Corr |
0.1 |
|
Catalog |
H |
|
HIP |
103571 |
|
Proxy |
|
|
RAhms |
20 59 05.18 |
|
DEdms |
+04 17 41.9 |
|
Vmag |
5.24 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
314.772 |
|
DEdeg |
4.29498 |
|
AstroRef |
C |
|
Plx |
16.59 |
|
CCDM |
20591+0418 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
1 |
|
MultFlag |
C |
|
Source |
F |
|
Qual |
A |
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
|
|
BD |
|
|
CD |
|
|
CP |
|
|
Dm number |
|
|
VIred |
0.53 |
|
SpType |
G0V |
|
R SpType |
|
|
Coord arcsec 2000 |
205905.18+041741.9 |
|
HIP |
103571 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
1 |
|
RArad |
5.4938002846 |
|
DErad |
0.0749615489 |
|
Plx |
17.68 |
|
PmRA |
-116.44 |
|
PmDE |
-152.18 |
|
E RArad |
1.17 |
|
E DErad |
0.69 |
|
E Plx |
1.33 |
|
E pmRA |
1.47 |
|
E pmDE |
0.71 |
|
Hpmag |
5.3441 |
|
E Hpmag |
0.0094 |
|
SHp |
0.094 |
|
VA |
0 |
|
BV |
0.457 |
|
E BV |
0.029 |
|
VI |
0.53 |
|
Ccdm |
20591+0418 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
STF2737 |
|
DRAs |
-1.01 |
|
DDEs |
-20.1 |
|
R dRAs |
10 |
|
Year |
1959 |
|
Theta |
070 |
|
Rho |
10.5 |
|
Obs |
99 |
|
Vmag |
7.1 |
|
Sp |
|
|
PmNote |
* |
|
PmRA |
-146 |
|
PmDE |
-151 |
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
+04 2846 |
|
Cat2 |
AGK2/3 |
|
HD |
|
|
M HD |
|
|
ADS BDS |
A14499 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
20541N0355C |
|
HIC |
103571 |
|
20591+0418 D
Coord arcsec 2000 |
205900.28+041804.7 |
|
Mag |
13.1 |
|
Calc delta mag |
7.14 |
|
Calc coord |
yes |
|
Ccdm |
20591+0418 |
|
RComp |
|
|
Comp |
D |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
STF2737 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1924 |
|
Theta |
280 |
|
Rho |
74.8 |
|
Obs |
2 |
|
Vmag |
12.4 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A14499 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
20541N0355D |
|
HIC |
|
|