18257-2102 HLD 144 AB (HD 169475)
18h 25m 39.08s -21° 02' 17.5" P.A. 42.00 sep 2.8 mag 9.20,9.13 Sp A3/5II
Coord 2000 |
18257-2102 |
|
Discov num |
HLD 144 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 25 39.08 -21 02 17.5 |
|
Date first |
1888 |
|
Date last |
2015 |
|
Obs |
15 |
|
Pa first |
39 |
|
Pa last |
42.3 |
|
P.A. Now (θ) |
42.3° |
|
Sep first |
3.1 |
|
Sep last |
2.788 |
|
Sep. Now (ρ) |
2.788" |
|
Mag pri |
9.20 |
|
Mag sec |
9.13 |
|
delta mag (ΔM) |
0.07 |
|
Spectral class |
A3/5II (white) |
|
Pri motion ra |
+009 |
|
Sec motion ra |
+009 |
|
Pri motion dec |
-023 |
|
Sec motion dec |
-023 |
|
Notes |
|
|
Nature of this double is uncertain.
18257-2102 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
HD 169475 |
|
18 25 39 -21 02 18 |
HLD 144 AB |
2015 |
15 |
42 |
2.8 |
9.20 |
9.13 |
0.07 |
|
<=== |
Show |
|
|
18 25 39 -21 02 18 |
HLD 144 AC |
2015 |
4 |
281 |
68.8 |
9.20 |
12.60 |
3.40 |
|
|
Show |
|
|
18 25 34 -21 02 06 |
HLD 144 CD |
2015 |
5 |
159 |
7.5 |
11.50 |
11.80 |
0.30 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 169475 |
|
Constellation |
Sagittarius |
|
Tycho2 |
6278-01761-2 |
|
Gaia DR2 |
4091112999846349312 |
|
HD |
169475 |
|
WDS 18257-2102 HLD 144 AB (HD 169475) : NOTES
No records found.
REFERENCES
refcode |
metd |
author |
reference |
Hld1874 |
Ma - |
Holden, E.S. |
. |
Hld1874 |
|
Washington Observations, 1874 |
|
Hld1875 |
Ma - |
Holden, E.S. |
. |
Hld1875 |
|
Washington Observations, 1875 |
|
Hld1875b |
Ma j |
Holden, E.S. & Newcomb, S. |
1875AN.....86..321H |
Hld1875b |
|
AN 86, 321, 1875 |
|
Hld1875c |
Ma j |
Holden, E.S. |
1875AN.....86..321H |
Hld1875c |
|
AN 86, 321, 1875 |
|
Hld1876 |
Ma - |
Holden, E.S. |
. |
Hld1876 |
|
Washington Observations, 1876 |
|
Hld1876b |
Ma j |
Holden, E.S. |
1876AN.....88..131H |
Hld1876b |
|
AN 88, 131, 1876 |
|
Hld1877 |
Ma - |
Holden, E.S. |
1877AN.....90..161H |
Hld1877 |
|
AN 90, 161, 1877 |
|
Hld1877b |
Ma j |
Holden, E.S. |
1877AN.....90..161H |
Hld1877b |
|
AN 90, 161, 1877 |
|
Hld1878 |
Ma - |
Holden, E.S. |
. |
Hld1878 |
|
Washington Observations, 1878 |
|
Hld1878b |
Ma j |
Holden, E.S. |
1878AN.....93...65H |
Hld1878b |
|
AN 93, 65, 1878 (data also in Hld1878) |
|
Hld1879 |
Ma - |
Holden, E.S. |
. |
Hld1879 |
|
Washington Observations, 1879 |
|
Hld1879b |
Ma j |
Holden, E.S. |
1879AN.....95..329H |
Hld1879b |
|
AN 95, 329, 1879 (data also in Hld1879) |
|
Hld1880 |
Ma - |
Holden, E.S. |
. |
Hld1880 |
|
Washington Observations, 1880 |
|
Hld1880b |
Ma j |
Holden, E.S. |
1880AN.....97..319H |
Hld1880b |
|
AN 97, 319, 1880 (data also in Hld1880) |
|
Hld1881 |
Ma - |
Holden, E.S. |
. |
Hld1881 |
|
Washington Observations, 1881 |
|
Hld1881b |
Ma j |
Holden, E.S. |
1881MNRAS..41..416. |
Hld1881b |
|
MNRAS 41, 416, 1881 |
|
Hld1882 |
Ma - |
Holden, E.S. |
1882PWasO...1...77H |
Hld1882 |
|
Pub. Washburn Obs. 1, 77, 1882 (see Pub. Lick Obs. 2, 1894) |
1894PLicO...2.....B |
Hld1884 |
Ma - |
Holden, E.S. |
1884PWasO...2...97H |
Hld1884 |
|
Pub. Washburn Obs. 2, 97, 1884 |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
18257-2102 |
HLD 144 |
AB |
1991 |
14 |
42 |
2.8 |
9.20 |
9.13 |
A3/5II |
|
182539.08-210217.5 |
18257-2102 |
HLD 144 |
AB |
2015 |
15 |
42 |
2.8 |
9.20 |
9.13 |
A3/5II |
|
182539.08-210217.5 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18257-2102 HLD 144 AB (HD 169475) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18257-2102 HLD 144 AB (HD 169475) : MEASURES
No records found.
WDS 18257-2102 (HD 169475) : 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 18257-2102 (HD 169475) : ALADIN DSS IMAGE @ 18h 25m 39.08s -21° 02' 17.5"
WDS 18257-2102 HLD 144 AB (HD 169475) : 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 |
|
18257-2102 |
HLD 144 |
AB |
42 |
2.8 |
1 |
Show |
|
18257-2102 |
HLD 144 |
AC |
281 |
68.8 |
1 |
Show |
|
18257-2102 |
HLD 144 |
CD |
159 |
7.5 |
2 |
Show |
|
18259-2053 |
BRT1537 |
|
284 |
3.4 |
8 |
Show |
|
18264-2111 |
ARA1534 |
|
270 |
13.2 |
14 |
Show |
|
18254-2033 |
JC 6 |
|
280 |
1.7 |
31 |
Show |
|
18278-2052 |
ARA1151 |
|
40 |
16.1 |
32 |
Show |
|
18239-2129 |
BRT1535 |
|
307 |
4.5 |
37 |
Show |
|
18282-2114 |
HJ 2832 |
|
21 |
23.1 |
38 |
Show |
|
18281-2048 |
RSS 32 |
|
223 |
45.7 |
38 |
Show |
|
18230-2115 |
ARA1529 |
|
307 |
11.8 |
40 |
Show |
|
18236-2133 |
RST5112 |
|
25 |
0.3 |
42 |
Show |
|
18261-2019 |
SKF 101 |
|
35 |
2.9 |
44 |
Show |
|
18254-2146 |
ARA1533 |
|
336 |
13.3 |
44 |
Show |
|
18273-2140 |
HU 239 |
|
185 |
3.1 |
45 |
Show |
|
18239-2139 |
BRT1536 |
|
71 |
3.5 |
45 |
Show |
|
18280-2135 |
HU 240 |
|
35 |
4.7 |
47 |
Show |
|
18289-2122 |
HU 241 |
AB |
34 |
4.1 |
49 |
Show |
|
18289-2122 |
HU 241 |
AC |
301 |
63.0 |
49 |
Show |
|
18234-2143 |
ARA1530 |
|
101 |
14.5 |
51 |
Show |
|
18247-2012 |
OCC 409 |
|
-1 |
0.0 |
53 |
Show |
|
18273-2154 |
ARA1535 |
|
38 |
11.4 |
57 |
Show |
|
18288-2138 |
HU 242 |
|
279 |
1.2 |
57 |
Show |
|
18216-2052 |
BRT1530 |
|
337 |
5.5 |
59 |
Show |
|
18223-2018 |
BHA 27 |
|
236 |
7.0 |
64 |
Show |
|
18231-2009 |
DON 897 |
|
129 |
1.6 |
65 |
Show |
|
18220-2143 |
ARA1528 |
|
298 |
16.6 |
66 |
Show |
|
18296-2138 |
ARA1536 |
|
147 |
15.5 |
67 |
Show |
|
18258-1953 |
ARA 750 |
|
112 |
3.6 |
70 |
Show |
|
18302-2135 |
ARA1537 |
|
77 |
13.4 |
72 |
Show |
|
18237-2209 |
BRT1534 |
|
117 |
4.7 |
73 |
Show |
|
18224-2201 |
ARA1878 |
|
264 |
12.4 |
74 |
Show |
|
18224-2202 |
ARA1877 |
|
255 |
9.0 |
75 |
Show |
|
18203-2055 |
BRT1529 |
|
281 |
4.2 |
76 |
Show |
|
18306-2133 |
ARA1538 |
|
255 |
9.4 |
77 |
Show |
|
18258-2220 |
ARA1887 |
|
187 |
6.0 |
78 |
Show |
|
18246-1944 |
OCC 459 |
|
-1 |
2.5 |
80 |
Show |
|
18217-2203 |
ARA1874 |
|
288 |
9.6 |
82 |
Show |
|
18226-2213 |
BRT1532 |
|
245 |
5.8 |
84 |
Show |
|
18314-2124 |
ARA1539 |
|
4 |
5.0 |
84 |
Show |
|
18209-2004 |
ARA1148 |
AB |
310 |
11.1 |
89 |
Show |
|
18315-2138 |
ARA1540 |
|
10 |
14.8 |
90 |
Show |
|
18242-1935 |
BU 49 |
AB |
45 |
8.2 |
91 |
Show |
|
18242-1935 |
BU 49 |
AC |
304 |
22.4 |
91 |
Show |
|
18242-1935 |
BU 49 |
AD |
149 |
23.4 |
91 |
Show |
|
18237-1936 |
ARA 746 |
|
280 |
12.9 |
91 |
Show |
|
18321-2040 |
ARA1152 |
|
134 |
14.5 |
93 |
Show |
|
18282-2227 |
ARA1889 |
|
9 |
9.0 |
93 |
Show |
|
18281-2228 |
ARA1888 |
|
250 |
13.7 |
93 |
Show |
|
18209-1956 |
RST3177 |
|
326 |
1.3 |
95 |
Show |
|
18190-2118 |
ARA1526 |
|
314 |
12.7 |
95 |
|
|
WDS 18257-2102 : COMPONENTS
|
A |
B |
C |
B |
pa=40.3°
sep=2.71"
| |
C |
pa=279.5°
sep=69.40"
| pa=277.6°
sep=70.83"
| |
D |
pa=273.8°
sep=66.10"
| pa=272.0°
sep=67.75"
| pa=160.3°
sep=7.43"
|
18257-2102 A
Name |
HD 169475 |
|
Coord arcsec 2000 |
182539.08-210217.5 |
|
Mag |
9.2 |
|
Spectral class |
A3/5II (white) |
|
PmRA |
9.00 |
|
PmDE |
-23.0 |
|
Tycho2 |
6278-01761-1 |
|
Tycho2 |
6278-01761-1 |
|
Pflag |
P |
|
RAmdeg |
276.41285492 |
|
DEmdeg |
-21.03820628 |
|
PmRA |
9.2 |
|
PmDE |
-22.9 |
|
E RAmdeg |
13 |
|
E DEmdeg |
17 |
|
E pmRA |
2.7 |
|
E pmDE |
2.8 |
|
EpRAm |
1991.24 |
|
EpDEm |
1990.88 |
|
Num |
5 |
|
Q RAmdeg |
2.2 |
|
Q DEmdeg |
2.4 |
|
Q pmRA |
2.3 |
|
Q pmDE |
2.4 |
|
BTmag |
9.566 |
|
E BTmag |
0.036 |
|
VTmag |
9.204 |
|
E VTmag |
0.033 |
|
Prox |
28 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
276.41254500 |
|
DEdeg |
-21.03844722 |
|
EpRA 1990 |
1.68 |
|
EpDE 1990 |
1.59 |
|
E RAdeg |
18.5 |
|
E DEdeg |
25.4 |
|
Posflg |
|
|
Corr |
0.4 |
|
18257-2102 B
Coord arcsec 2000 |
182539.21-210215.4 |
|
Mag |
9.13 |
|
PmRA |
9.00 |
|
PmDE |
-23.0 |
|
Tycho2 |
6278-01761-2 |
|
HD |
169475 |
|
Calc delta mag |
0.07 |
|
Calc coord |
yes |
|
Tycho2 |
6278-01761-2 |
|
Pflag |
P |
|
RAmdeg |
276.41285492 |
|
DEmdeg |
-21.03820628 |
|
PmRA |
9.2 |
|
PmDE |
-22.9 |
|
E RAmdeg |
13 |
|
E DEmdeg |
17 |
|
E pmRA |
2.7 |
|
E pmDE |
2.8 |
|
EpRAm |
1991.24 |
|
EpDEm |
1990.88 |
|
Num |
5 |
|
Q RAmdeg |
2.2 |
|
Q DEmdeg |
2.4 |
|
Q pmRA |
2.3 |
|
Q pmDE |
2.4 |
|
BTmag |
9.548 |
|
E BTmag |
0.026 |
|
VTmag |
9.125 |
|
E VTmag |
0.024 |
|
Prox |
28 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
276.41310889 |
|
DEdeg |
-21.03787111 |
|
EpRA 1990 |
1.66 |
|
EpDE 1990 |
1.54 |
|
E RAdeg |
13.0 |
|
E DEdeg |
17.2 |
|
Posflg |
D |
|
Corr |
0.0 |
|
18257-2102 C
Coord arcsec 2000 |
182534.19-210206.1 |
|
Coord calc |
182534.19-210206.1 |
|
Mag |
11.5 |
|
PmRA |
2.00 |
|
PmDE |
6.0 |
|
Calc delta mag |
2.3 |
|
18257-2102 D
Coord arcsec 2000 |
182534.37-210213.1 |
|
Mag |
11.8 |
|
PmRA |
-19.00 |
|
PmDE |
10.0 |
|
Calc delta mag |
2.6 |
|
Calc coord |
yes |
|