21521+2748 HO 171 (HD 207931)
21h 52m 08.95s +27° 48' 02.2" P.A. 342.00 sep 0.8 mag 9.36,9.50 Sp A3 dist. 512.82 pc (1672.82 l.y.)
Coord 2000 |
21521+2748 |
|
Discov num |
HO 171 |
|
Comp |
|
|
Coord arcsec 2000 |
21 52 08.95 +27 48 02.2 |
|
Date first |
1884 |
|
Date last |
2016 |
|
Obs |
64 |
|
Pa first |
359 |
|
Pa last |
341.5 |
|
P.A. Now (θ) |
341.5° |
|
Sep first |
0.6 |
|
Sep last |
0.758 |
|
Sep. Now (ρ) |
0.758" |
|
Mag pri |
9.36 |
|
Mag sec |
9.50 |
|
delta mag (ΔM) |
0.14 |
|
Spectral class |
A3 (white) |
|
Pri motion ra |
+013 |
|
Sec motion ra |
+013 |
|
Pri motion dec |
+004 |
|
Sec motion dec |
+004 |
|
Notes |
|
|
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 207931 |
|
Constellation |
Pegasus |
|
SAO |
90057 |
|
HIP |
107946 |
|
Tycho2 |
2210-00105-1 |
|
Gaia DR2 |
1800212177498483840 |
|
HD |
207931 |
|
BD |
BD+27 4184 |
|
Distance |
512.82 |
|
Distance ly |
1672.82 |
|
WDS 21521+2748 HO 171 (HD 207931) : NOTES
No records found.
REFERENCES
refcode |
metd |
author |
reference |
Ho_1883 |
Ma j |
Hough, G.W. |
1883MNRAS..43..371H |
Ho_1883 |
|
MNRAS 43, 371, 1883 (data also in Ho_1890) |
1890AN....125....1H |
Ho_1884 |
Ma j |
Hough, G.W. |
1884MNRAS..44..365H |
Ho_1884 |
|
MNRAS 44, 365, 1884 (data also in Ho_1890) |
1890AN....125....1H |
Ho_1885 |
Ma j |
Hough, G.W. |
1885MNRAS..45..417H |
Ho_1885 |
|
MNRAS 45, 417, 1885 (data also in Ho_1890) |
1890AN....125....1H |
Ho_1886 |
Ma j |
Hough, G.W. |
1886MNRAS..46..393H |
Ho_1886 |
|
MNRAS 46, 393, 1886 (data also in Ho_1890) |
1890AN....125....1H |
Ho_1887 |
Ma j |
Hough, G.W. |
1887AN....116..273H |
Ho_1887 |
|
AN 116, 273, 1887 |
|
Ho_1890 |
Ma j |
Hough, G.W. |
1890AN....125....1H |
Ho_1890 |
|
AN 125, 1, 1890 |
|
Ho_1890b |
Ma j |
Hough, G.W. |
1890AJ......9..177H |
Ho_1890b |
|
AJ 9, 177, 1890 (some data also in Ho_1890 or Ho_1894b) |
1890AN....125....1H |
Ho_1894a |
Ma - |
Hough, G.W. |
1894MNRAS..54..251H |
Ho_1894a |
|
MNRAS 54, 251, 1894 |
|
Ho_1894b |
Ma j |
Hough, G.W. (HO 304 - 490) |
1894AN....135..281H |
Ho_1894b |
|
AN 135, 281, 1894 |
|
Ho_1894c |
Ma - |
Hough, G.W. (measure by Dembowski, H.) |
1894AN....135..281H |
Ho_1894c |
|
AN 135, 281, 1894 |
|
Ho_1899a |
Ma j |
Hough, G.W. |
1899AN....149..65H |
Ho_1899a |
|
AN 149, 65, 1899 |
|
Ho_1899b |
Ma - |
Hough, G.W. (measure by Burnham, S.W.) |
1899AN....149..65H |
Ho_1899b |
|
AN 149, 65, 1899 |
|
Ho_1907 |
Ma - |
Hough, G.W. |
1907PFAO....3c...1D |
Ho_1907 |
|
Pub. Univ. Penn. 3, Pt. 3, 1907 (measures sent to Doolittle) |
|
Ho_1932A |
Ma - |
Hough, G.W. |
1932QB821.A43...... |
Ho_1932A |
|
cited in ADS, 1932 (unpublished measures sent to Aitken in manuscript by Fox) |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
21521+2748 |
HO 171 |
|
2000 |
51 |
341 |
0.7 |
9.36 |
9.50 |
A3 |
D |
215208.95+274802.2 |
21521+2748 |
HO 171 |
|
2009 |
53 |
342 |
0.7 |
9.36 |
9.50 |
A3 |
D |
215208.95+274802.2 |
21521+2748 |
HO 171 |
|
2010 |
56 |
342 |
0.7 |
9.36 |
9.50 |
A3 |
D |
215208.95+274802.2 |
21521+2748 |
HO 171 |
|
2015 |
57 |
342 |
0.7 |
9.36 |
9.50 |
A3 |
|
215208.95+274802.2 |
21521+2748 |
HO 171 |
|
2016 |
58 |
342 |
0.8 |
9.36 |
9.50 |
A3 |
|
215208.95+274802.2 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 21521+2748 HO 171 (HD 207931) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 21521+2748 HO 171 (HD 207931) : MEASURES
No records found.
WDS 21521+2748 (HD 207931) : 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 21521+2748 (HD 207931) : ALADIN DSS IMAGE @ 21h 52m 08.95s +27° 48' 02.2"
WDS 21521+2748 HO 171 (HD 207931) : 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 |
|
21521+2748 |
HO 171 |
|
342 |
0.8 |
|
Show |
|
21505+2756 |
AZC 116 |
|
353 |
20.9 |
24 |
Show |
|
21503+2754 |
MLB 576 |
|
267 |
13.1 |
26 |
Show |
|
21524+2823 |
NSN 67 |
|
285 |
5.1 |
35 |
Show |
|
21539+2821 |
WSI 8 |
|
142 |
0.1 |
41 |
Show |
|
21559+2753 |
HJ 1704 |
|
317 |
5.6 |
50 |
Show |
|
21536+2701 |
ES 523 |
|
95 |
6.2 |
51 |
Show |
|
21555+2724 |
A 303 |
AB |
52 |
2.3 |
51 |
Show |
|
21555+2724 |
STJ 1 |
AC |
337 |
3.4 |
51 |
Show |
|
21556+2823 |
MLB 577 |
BC |
18 |
6.4 |
58 |
Show |
|
21556+2823 |
MLB 577 |
AB |
300 |
48.8 |
59 |
Show |
|
21477+2740 |
CVR 922 |
|
225 |
9.9 |
60 |
Show |
|
21480+2819 |
MLB 541 |
|
340 |
9.9 |
63 |
Show |
|
21517+2852 |
SHN 256 |
|
-1 |
0.6 |
64 |
Show |
|
21567+2721 |
GRV 521 |
|
306 |
45.5 |
67 |
Show |
|
21517+2856 |
HLD 49 |
|
341 |
2.1 |
68 |
Show |
|
21573+2738 |
NSN 749 |
|
84 |
1.7 |
70 |
Show |
|
21540+2852 |
GRV 519 |
|
318 |
22.1 |
70 |
Show |
|
21561+2701 |
J 854 |
|
305 |
2.8 |
72 |
Show |
|
21538+2856 |
MLB 495 |
|
134 |
4.8 |
73 |
Show |
|
21547+2643 |
CVR 924 |
|
252 |
21.1 |
74 |
Show |
|
21553+2648 |
A 302 |
|
239 |
5.8 |
74 |
Show |
|
21553+2850 |
COU 836 |
|
161 |
1.3 |
75 |
Show |
|
21468+2718 |
HO 608 |
|
130 |
0.6 |
77 |
Show |
|
21580+2755 |
KPP3375 |
|
114 |
14.2 |
78 |
Show |
|
21474+2834 |
A 300 |
AB |
252 |
2.3 |
78 |
Show |
|
21474+2834 |
A 300 |
AC |
29 |
7.5 |
78 |
Show |
|
21474+2834 |
A 300 |
AD |
170 |
8.4 |
78 |
Show |
|
21491+2640 |
LDS4912 |
|
134 |
16.5 |
79 |
Show |
|
21561+2846 |
COU 837 |
AB |
150 |
1.2 |
79 |
Show |
|
21561+2846 |
GII 104 |
AC |
105 |
1.9 |
79 |
Show |
|
21510+2911 |
A 889 |
AB |
15 |
0.2 |
84 |
Show |
|
21510+2911 |
A 889 |
Aa,Ab |
323 |
0.0 |
84 |
Show |
|
21462+2817 |
MLB 540 |
AB |
256 |
4.1 |
87 |
Show |
|
21462+2817 |
MLB 540 |
AC |
322 |
8.7 |
87 |
Show |
|
21462+2817 |
ABH 152 |
AD |
68 |
41.8 |
87 |
Show |
|
21462+2817 |
ABH 152 |
AE |
96 |
80.1 |
87 |
Show |
|
21585+2725 |
A 304 |
AB |
131 |
0.6 |
88 |
Show |
|
21585+2725 |
A 304 |
AB,C |
240 |
13.9 |
88 |
Show |
|
21474+2855 |
AG 420 |
|
145 |
7.5 |
92 |
Show |
|
21565+2900 |
HJ 1706 |
|
260 |
10.0 |
93 |
Show |
|
21456+2709 |
MLB1050 |
|
67 |
6.9 |
95 |
Show |
|
21457+2708 |
BKO 633 |
|
18 |
7.4 |
95 |
Show |
|
21453+2722 |
HO 606 |
|
93 |
18.4 |
95 |
Show |
|
21593+2800 |
MLB 578 |
|
151 |
3.1 |
96 |
Show |
|
21454+2819 |
J 3145 |
|
112 |
5.4 |
97 |
Show |
|
21575+2856 |
LEP 104 |
|
189 |
85.0 |
99 |
Show |
|
21564+2627 |
KPP3374 |
|
328 |
11.3 |
99 |
Show |
|
21461+2855 |
BRT 58 |
|
165 |
4.4 |
105 |
Show |
|
21469+2907 |
CVR 919 |
|
201 |
23.5 |
106 |
Show |
|
21444+2824 |
KPP3373 |
|
242 |
2.1 |
109 |
|
|
WDS 21521+2748 : COMPONENTS
21521+2748 A
Componente originario normalizzato |
AB |
|
Name |
HD 207931 |
|
Coord arcsec 2000 |
215208.95+274802.2 |
|
Mag |
9.36 |
|
Spectral class |
A3 (white) |
|
PmRA |
13.00 |
|
PmDE |
4.0 |
|
SAO |
90057 |
|
HIP |
107946 |
|
Tycho2 |
2210-00105-1 |
|
HD |
207931 |
|
BD |
BD+27 4184 |
|
Tycho2 |
2210-00105-1 |
|
Pflag |
|
|
RAmdeg |
328.03725333 |
|
DEmdeg |
27.80070696 |
|
PmRA |
12.9 |
|
PmDE |
4.0 |
|
E RAmdeg |
10 |
|
E DEmdeg |
11 |
|
E pmRA |
1.4 |
|
E pmDE |
1.3 |
|
EpRAm |
1990.62 |
|
EpDEm |
1990.17 |
|
Num |
8 |
|
Q RAmdeg |
0.5 |
|
Q DEmdeg |
0.7 |
|
Q pmRA |
0.6 |
|
Q pmDE |
0.7 |
|
BTmag |
9.288 |
|
E BTmag |
0.022 |
|
VTmag |
8.900 |
|
E VTmag |
0.018 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
107946 |
|
CCDM |
AB |
|
RAdeg |
328.03721944 |
|
DEdeg |
27.80069750 |
|
EpRA 1990 |
1.68 |
|
EpDE 1990 |
1.68 |
|
E RAdeg |
10.2 |
|
E DEdeg |
11.4 |
|
Posflg |
P |
|
Corr |
-0.1 |
|
SAO |
90057 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
0.0014 |
|
DE1950 |
|
|
PmDE1950 |
-0.007 |
|
Vmag |
8.6 |
|
SpType |
A3 |
|
Double code |
|
|
Source |
34 |
|
CatNum |
12960 |
|
DM |
BD+27 4184 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
207931 |
|
M HD |
0 |
|
GC |
|
|
RA1950rad |
5.71550321 |
|
DE1950rad |
0.48110212 |
|
PmRA2000 |
0.0015 |
|
PmDE2000 |
-0.012 |
|
Catalog |
H |
|
HIP |
107946 |
|
Proxy |
H |
|
RAhms |
21 52 08.94 |
|
DEdms |
+27 48 02.2 |
|
Vmag |
8.73 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
328.037 |
|
DEdeg |
27.8006 |
|
AstroRef |
B |
|
Plx |
5.05 |
|
CCDM |
21521+2748 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
A |
|
M HIP |
BA |
|
Theta |
344 |
|
Rho |
0.793 |
|
HD |
207931 |
|
BD |
BD+27 4184 |
|
CD |
|
|
CP |
|
|
Dm number |
+27 4184 |
|
VIred |
0.28 |
|
SpType |
A3 |
|
R SpType |
|
|
Coord arcsec 2000 |
215208.94+274802.2 |
|
HIP |
107946 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
5.7253300024 |
|
DErad |
0.4852119924 |
|
Plx |
1.95 |
|
PmRA |
11.96 |
|
PmDE |
6.01 |
|
E RArad |
1.74 |
|
E DErad |
2.54 |
|
E Plx |
3.23 |
|
E pmRA |
1.62 |
|
E pmDE |
2.78 |
|
Hpmag |
8.8107 |
|
E Hpmag |
0.0027 |
|
SHp |
0.018 |
|
VA |
0 |
|
BV |
0.317 |
|
E BV |
0.025 |
|
VI |
0.37 |
|
Ccdm |
21521+2748 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
2.97 |
|
DDEs |
2.6 |
|
R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
2 |
|
Vmag |
9.5 |
|
Sp |
A3 |
|
PmNote |
* |
|
PmRA |
20 |
|
PmDE |
11 |
|
Dm number |
+27 4184 |
|
Cat1 |
BD |
|
Name2 |
+27 2520 |
|
Cat2 |
AGK2/3 |
|
HD |
207931 |
|
M HD |
|
|
ADS BDS |
A15401 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
21476N2719A |
|
HIC |
107946 |
|
21521+2748 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
215208.93+274802.9 |
|
Mag |
9.5 |
|
PmRA |
13.00 |
|
PmDE |
4.0 |
|
Calc delta mag |
0.14 |
|
Calc coord |
yes |
|
Ccdm |
21521+2748 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
HO 171 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1957 |
|
Theta |
166 |
|
Rho |
0.8 |
|
Obs |
24 |
|
Vmag |
9.5 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A15401 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
21476N2719B |
|
HIC |
107946 |
|