20426+1244 STF 2718 AB (HD 197312)
20h 42m 33.47s +12° 43' 41.9" P.A. 87.00 sep 8.5 mag 8.28,8.39 Sp F5 dist. 144.51 pc (471.39 l.y.)
Coord 2000 |
20426+1244 |
|
Discov num |
STF2718 |
|
Comp |
AB |
|
Coord arcsec 2000 |
20 42 33.47 +12 43 41.9 |
|
Date first |
1824 |
|
Date last |
2020 |
|
Obs |
85 |
|
Pa first |
87 |
|
Pa last |
87.2 |
|
P.A. Now (θ) |
87.2° |
|
Sep first |
9.2 |
|
Sep last |
8.489 |
|
Sep. Now (ρ) |
8.489" |
|
Mag pri |
8.28 |
|
Mag sec |
8.39 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
F5 (yellow-white) |
|
Pri motion ra |
-004 |
|
Sec motion ra |
-007 |
|
Pri motion dec |
-023 |
|
Sec motion dec |
-026 |
|
Notes |
|
|
rPM=0.158 (< 0.3, Physical double)
This double is physical.
20426+1244 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 197312 |
106409 |
20 42 33 +12 43 42 |
STF 2718 AB |
2020 |
85 |
87 |
8.5 |
8.28 |
8.39 |
0.11 |
|
<=== |
Show |
|
106409 |
20 42 33 +12 43 42 |
STF 2718 AC |
2015 |
20 |
346 |
167.2 |
8.28 |
9.02 |
0.74 |
|
|
Show |
|
106410 |
20 42 34 +12 43 42 |
STF 2718 BC |
2015 |
16 |
346 |
167.3 |
8.39 |
9.02 |
0.63 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 197312 |
|
Constellation |
Delphinus |
|
SAO |
106409 |
|
HIP |
102206 |
|
Tycho2 |
1097-02966-1 |
|
Gaia DR2 |
1755224014276610432 |
|
HD |
197312 |
|
GC |
28855 |
|
BD |
BD+12 4440 |
|
Distance |
144.51 |
|
Distance ly |
471.39 |
|
WDS 20426+1244 STF 2718 AB (HD 197312) : NOTES
No records found.
REFERENCES
refcode |
metd |
author |
reference |
STFA |
|
(F. Struve DD - Appendix list #1) |
................... |
STFB |
|
(F. Struve DD - Appendix list #2) |
................... |
StF1833A |
Ma - |
Struve, F.G.W. |
1833MmRAS...5...13H |
StF1833A |
+Mc |
cited by Herschel (MemRAS 5, 13, 1833) |
|
StF1833B |
Ma - |
Struve, F.G.W. |
1833AN.....10..389B |
StF1833B |
|
cited by Bessel (AN 10, 389, 1833) |
|
StF1837 |
Ma - |
Struve, F.G.W. |
1837AN.....14...249 |
StF1837 |
|
Stellarum duplicium et multiplicium mensurae micrometricae... |
|
StF1837 |
|
(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837 |
|
StF1844A |
Ma - |
Struve, F.G.W. |
1844QB43.S66....... |
StF1844A |
|
cited by Smyth (Cycle of Celestial Objects 2, 1844) |
|
StF1852A |
Ma - |
Struve, F.G.W. |
. |
StF1852A |
|
cited by Bishop (Bishop Obs. Astron. Observations 1852) |
|
StF1865A |
Ma - |
Struve, F.G.W. |
1865AN.....64...81E |
StF1865A |
|
cited by Engelmann (AN 64, 81, #1518, 1865) |
|
StF1875A |
Ma - |
Struve, F.G.W. |
1875AN.....85..323D |
StF1875A |
|
cited by Doberck, 1875 (see Dob1875b,f,g,h) |
|
StF1878 |
Ma - |
Struve, F.G.W. |
. |
StF1878 |
|
Pulkova Observations 9, 1878 |
|
StF1878B |
Ma - |
Struve, F.G.W. |
1878Obs.....2..239G |
StF1878B |
|
cited by Gledhill (Obs 2, 239, 1878) |
|
StF1880A |
Ma - |
Struve, F.G.W. |
1880Obs.....3..535G |
StF1880A |
|
cited by Gledhill (Obs 3, 535, 1880) |
|
StF1906A |
Ma - |
Struve, F.G.W. |
1906QB821.B972..... |
StF1906A |
|
cited in BDS (Burnham Double Star Cat.), 1906 |
|
StF1906B |
Ma - |
Struve, F.G.W. |
1906MmRAS..56....1L |
StF1906B |
|
cited by Lewis (MemRAS 56, 1, 1906) |
|
StF1922A |
Ma - |
Struve, F.G.W. |
1922AN....216...49R |
StF1922A |
|
cited by Rabe (AN 216, 49, 1922) |
|
StF1932A |
Ma - |
Struve, F.G.W. |
1932QB821.A43...... |
StF1932A |
|
cited in ADS (Aitken Double Star Cat.), 1932 |
|
StF2002 |
- - |
Weis, J. |
|
StF2002 |
|
F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue |
|
StF2002 |
|
USNO Library : QB 821 .S8 W49 2002 |
|
StF2022 |
- - |
email note from Jan Weis: 6 July 2022 |
|
StF9999 |
Ma - |
Struve, F.G.W. |
................... |
StF9999 |
|
Unpublished, manuscript or reference not found. |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
20426+1244 |
STF2718 |
AB |
2004 |
70 |
89 |
8.5 |
8.28 |
8.39 |
F5 |
D |
204233.47+124341.9 |
20426+1244 |
STF2718 |
AB |
2009 |
73 |
87 |
8.3 |
8.28 |
8.39 |
F5 |
D |
204233.47+124341.9 |
20426+1244 |
STF2718 |
AB |
2011 |
74 |
88 |
8.3 |
8.28 |
8.39 |
F5 |
D |
204233.47+124341.9 |
20426+1244 |
STF2718 |
AB |
2013 |
76 |
87 |
8.4 |
8.28 |
8.39 |
F5 |
D |
204233.47+124341.9 |
20426+1244 |
STF2718 |
AB |
2015 |
77 |
88 |
8.6 |
8.28 |
8.39 |
F5 |
|
204233.47+124341.9 |
20426+1244 |
STF2718 |
AB |
2020 |
84 |
87 |
8.5 |
8.28 |
8.39 |
F5 |
|
204233.47+124341.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 20426+1244 STF 2718 AB (HD 197312) : VISUAL OBSERVATIONS REPORTS
WDS 20426+1244 STF 2718 AB (HD 197312) : MEASURES
No records found.
WDS 20426+1244 (HD 197312) : 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 20426+1244 (HD 197312) : ALADIN DSS IMAGE @ 20h 42m 33.47s +12° 43' 41.9"
WDS 20426+1244 STF 2718 AB (HD 197312) : 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 |
|
20426+1244 |
STF2718 |
AB |
87 |
8.5 |
1 |
Show |
|
20426+1244 |
STF2718 |
AC |
346 |
167.2 |
1 |
Show |
|
20426+1244 |
STF2718 |
BC |
346 |
167.3 |
1 |
Show |
|
20428+1244 |
BPM2234 |
|
331 |
93.5 |
4 |
Show |
|
20426+1300 |
GWP2988 |
|
23 |
19.1 |
17 |
Show |
|
20418+1231 |
STF2715 |
|
2 |
12.4 |
18 |
Show |
|
20439+1255 |
J 1888 |
|
158 |
10.0 |
22 |
Show |
|
20440+1256 |
DAM 218 |
|
342 |
5.7 |
25 |
Show |
|
20441+1258 |
J 1889 |
|
10 |
4.6 |
26 |
Show |
|
20405+1240 |
HEI 278 |
|
135 |
3.4 |
30 |
Show |
|
20440+1225 |
HJ 1566 |
AB |
16 |
16.9 |
31 |
Show |
|
20440+1225 |
HJ 1566 |
AC |
331 |
32.4 |
31 |
Show |
|
20420+1212 |
BPM2231 |
|
330 |
108.9 |
33 |
Show |
|
20402+1248 |
BPM2223 |
|
290 |
95.3 |
36 |
Show |
|
20450+1244 |
BU 64 |
AB |
174 |
0.7 |
36 |
Show |
|
20450+1244 |
STTA209 |
AC |
155 |
97.2 |
36 |
Show |
|
20450+1244 |
BU 64 |
AD |
117 |
64.3 |
36 |
Show |
|
20450+1244 |
D 32 |
CD |
15 |
60.8 |
37 |
Show |
|
20446+1312 |
TDS1098 |
|
279 |
0.9 |
41 |
Show |
|
20442+1209 |
BPM2240 |
|
148 |
55.1 |
42 |
Show |
|
20449+1219 |
B 2910 |
Aa,Ab |
52 |
0.1 |
43 |
Show |
|
20449+1219 |
STF2723 |
AB |
140 |
1.0 |
43 |
Show |
|
20449+1219 |
BU 1492 |
AC |
30 |
37.0 |
43 |
Show |
|
20410+1206 |
HEI 587 |
|
36 |
1.2 |
44 |
Show |
|
20413+1327 |
BPM2228 |
BC |
141 |
118.1 |
47 |
Show |
|
20444+1205 |
A 875 |
|
208 |
2.5 |
48 |
Show |
|
20413+1327 |
BPM2227 |
AB |
173 |
68.5 |
48 |
Show |
|
20457+1302 |
WFC 258 |
|
284 |
11.7 |
50 |
Show |
|
20438+1330 |
BPM2238 |
|
50 |
66.9 |
50 |
Show |
|
20414+1157 |
TDT2472 |
|
309 |
0.5 |
50 |
Show |
|
20396+1310 |
J 912 |
|
125 |
1.8 |
50 |
Show |
|
20391+1243 |
BPM2218 |
|
252 |
64.4 |
51 |
Show |
|
20460+1235 |
KPP 477 |
|
52 |
4.5 |
52 |
Show |
|
20426+1335 |
HEI 279 |
BC |
211 |
4.1 |
52 |
Show |
|
20426+1335 |
HEI 279 |
AB |
115 |
25.1 |
52 |
Show |
|
20429+1152 |
BPM2235 |
|
142 |
114.9 |
52 |
Show |
|
20419+1150 |
HEI 588 |
|
293 |
2.3 |
54 |
Show |
|
20408+1332 |
GWP2982 |
|
31 |
88.8 |
55 |
Show |
|
20446+1154 |
BPM2251 |
|
51 |
84.7 |
58 |
Show |
|
20421+1341 |
BPM2232 |
|
346 |
68.4 |
59 |
Show |
|
20446+1333 |
YSC 242 |
AB |
157 |
1.5 |
59 |
Show |
|
20471+1257 |
BPM2265 |
|
51 |
16.1 |
68 |
Show |
|
20391+1329 |
TDT2453 |
Aa,Ab |
117 |
0.5 |
68 |
Show |
|
20391+1329 |
UC 4242 |
AB |
105 |
45.3 |
68 |
Show |
|
20404+1143 |
UC 4253 |
|
315 |
19.7 |
69 |
Show |
|
20466+1334 |
GWP2996 |
|
157 |
54.2 |
78 |
Show |
|
20372+1250 |
A 1680 |
|
295 |
3.8 |
79 |
Show |
|
20373+1230 |
UC 4235 |
|
132 |
44.9 |
79 |
Show |
|
20372+1224 |
BPM2209 |
|
213 |
61.9 |
82 |
Show |
|
20418+1404 |
J 2575 |
|
305 |
1.7 |
83 |
Show |
|
20467+1343 |
BPM2262 |
|
331 |
74.6 |
85 |
|
|
WDS 20426+1244 : COMPONENTS
|
A |
B |
B |
pa=88.6°
sep=8.49"
| |
C |
pa=346.5°
sep=166.98"
| pa=343.7°
sep=168.97"
|
20426+1244 A
Name |
HD 197312 |
|
Coord arcsec 2000 |
204233.47+124341.9 |
|
Mag |
8.28 |
|
Spectral class |
F5 (yellow-white) |
|
PmRA |
-4.00 |
|
PmDE |
-23.0 |
|
SAO |
106409 |
|
HIP |
102206 |
|
Tycho2 |
1097-02966-1 |
|
HD |
197312 |
|
GC |
28855 |
|
BD |
BD+12 4440 |
|
Tycho2 |
1097-02966-1 |
|
Pflag |
|
|
RAmdeg |
310.63947915 |
|
DEmdeg |
12.72824013 |
|
PmRA |
1.2 |
|
PmDE |
-24.1 |
|
E RAmdeg |
8 |
|
E DEmdeg |
8 |
|
E pmRA |
1.4 |
|
E pmDE |
1.4 |
|
EpRAm |
1991.31 |
|
EpDEm |
1991.22 |
|
Num |
5 |
|
Q RAmdeg |
2.4 |
|
Q DEmdeg |
1.4 |
|
Q pmRA |
2.5 |
|
Q pmDE |
1.3 |
|
BTmag |
8.697 |
|
E BTmag |
0.018 |
|
VTmag |
8.284 |
|
E VTmag |
0.014 |
|
Prox |
85 |
|
TYC |
T |
|
HIP |
102206 |
|
CCDM |
A |
|
RAdeg |
310.63947611 |
|
DEdeg |
12.72829611 |
|
EpRA 1990 |
1.69 |
|
EpDE 1990 |
1.65 |
|
E RAdeg |
7.7 |
|
E DEdeg |
7.5 |
|
Posflg |
|
|
Corr |
0.0 |
|
SAO |
106409 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0011 |
|
DE1950 |
|
|
PmDE1950 |
-0.011 |
|
Vmag |
8 |
|
SpType |
F5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
28855 |
|
DM |
BD+12 4440 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
197312 |
|
M HD |
0 |
|
GC |
28855 |
|
RA1950rad |
5.41132451 |
|
DE1950rad |
0.21901381 |
|
PmRA2000 |
-0.001 |
|
PmDE2000 |
-0.014 |
|
Catalog |
H |
|
HIP |
102206 |
|
Proxy |
H |
|
RAhms |
20 42 33.47 |
|
DEdms |
+12 43 41.9 |
|
Vmag |
7.57 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
310.639 |
|
DEdeg |
12.7283 |
|
AstroRef |
A |
|
Plx |
7.7 |
|
CCDM |
20425+1245 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
A |
|
M HIP |
AB |
|
Theta |
87 |
|
Rho |
8.483 |
|
HD |
197312 |
|
BD |
BD+12 4440 |
|
CD |
|
|
CP |
|
|
Dm number |
+12 4440 |
|
VIred |
0.53 |
|
SpType |
F5+... |
|
R SpType |
|
|
Coord arcsec 2000 |
204233.47+124341.9 |
|
HIP |
102206 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
5.4216816783 |
|
DErad |
0.2221507488 |
|
Plx |
6.92 |
|
PmRA |
-10.98 |
|
PmDE |
-23.87 |
|
E RArad |
1.5 |
|
E DErad |
1.14 |
|
E Plx |
2.3 |
|
E pmRA |
2.37 |
|
E pmDE |
1.4 |
|
Hpmag |
7.6624 |
|
E Hpmag |
0.0017 |
|
SHp |
0.013 |
|
VA |
0 |
|
BV |
0.425 |
|
E BV |
0.016 |
|
VI |
0.49 |
|
20426+1244 B
Coord arcsec 2000 |
204234.05+124342.1 |
|
Coord calc |
204234.05+124342.1 |
|
Mag |
8.39 |
|
Spectral class |
F5 (yellow-white) |
|
PmRA |
-7.00 |
|
PmDE |
-26.0 |
|
SAO |
106410 |
|
Tycho2 |
1097-00010-1 |
|
HD |
197313 |
|
GC |
28856 |
|
DM |
BD+12 4441 |
|
Calc delta mag |
0.11 |
|
Tycho2 |
1097-00010-1 |
|
Pflag |
|
|
RAmdeg |
310.64186711 |
|
DEmdeg |
12.72835520 |
|
PmRA |
-9.5 |
|
PmDE |
-28.0 |
|
E RAmdeg |
8 |
|
E DEmdeg |
8 |
|
E pmRA |
1.4 |
|
E pmDE |
1.3 |
|
EpRAm |
1991.24 |
|
EpDEm |
1991.18 |
|
Num |
6 |
|
Q RAmdeg |
2.0 |
|
Q DEmdeg |
1.0 |
|
Q pmRA |
2.1 |
|
Q pmDE |
1.1 |
|
BTmag |
8.881 |
|
E BTmag |
0.019 |
|
VTmag |
8.394 |
|
E VTmag |
0.015 |
|
Prox |
85 |
|
TYC |
T |
|
HIP |
102206 |
|
CCDM |
B |
|
RAdeg |
310.64189000 |
|
DEdeg |
12.72842000 |
|
EpRA 1990 |
1.67 |
|
EpDE 1990 |
1.68 |
|
E RAdeg |
8.4 |
|
E DEdeg |
8.2 |
|
Posflg |
|
|
Corr |
-0.1 |
|
SAO |
106410 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0024 |
|
DE1950 |
|
|
PmDE1950 |
-0.018 |
|
Vmag |
8 |
|
SpType |
F5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
28856 |
|
DM |
BD+12 4441 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
197313 |
|
M HD |
0 |
|
GC |
28856 |
|
RA1950rad |
5.41136445 |
|
DE1950rad |
0.2190145 |
|
PmRA2000 |
-0.0023 |
|
PmDE2000 |
-0.021 |
|
20426+1244 C
Coord arcsec 2000 |
204230.81+124624.3 |
|
Mag |
9.02 |
|
PmRA |
12.00 |
|
PmDE |
-12.0 |
|
Tycho2 |
1097-00215-1 |
|
Calc delta mag |
0.74 |
|
Calc coord |
yes |
|
Tycho2 |
1097-00215-1 |
|
Pflag |
|
|
RAmdeg |
310.62757019 |
|
DEmdeg |
12.77330158 |
|
PmRA |
11.1 |
|
PmDE |
-12.7 |
|
E RAmdeg |
12 |
|
E DEmdeg |
14 |
|
E pmRA |
1.3 |
|
E pmDE |
1.2 |
|
EpRAm |
1990.33 |
|
EpDEm |
1988.88 |
|
Num |
7 |
|
Q RAmdeg |
0.8 |
|
Q DEmdeg |
0.4 |
|
Q pmRA |
0.8 |
|
Q pmDE |
0.5 |
|
BTmag |
11.189 |
|
E BTmag |
0.060 |
|
VTmag |
9.024 |
|
E VTmag |
0.017 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
310.62754389 |
|
DEdeg |
12.77333139 |
|
EpRA 1990 |
1.77 |
|
EpDE 1990 |
1.54 |
|
E RAdeg |
11.7 |
|
E DEdeg |
15.4 |
|
Posflg |
|
|
Corr |
-0.1 |
|