20498+1321 HJ 1578
20h 49m 53.07s +13° 20' 27.7" P.A. 311.00 sep 11.5 mag 9.84,12.01
Coord 2000 |
20498+1321 |
|
Discov num |
HJ 1578 |
|
Comp |
|
|
Coord arcsec 2000 |
20 49 53.07 +13 20 27.7 |
|
Date first |
1828 |
|
Date last |
2015 |
|
Obs |
9 |
|
Pa first |
308 |
|
Pa last |
311.3 |
|
P.A. Now (θ) |
311.3° |
|
Sep first |
8.0 |
|
Sep last |
11.52 |
|
Sep. Now (ρ) |
11.52" |
|
Mag pri |
9.84 |
|
Mag sec |
12.01 |
|
delta mag (ΔM) |
2.17 |
|
Spectral class |
|
|
Pri motion ra |
+009 |
|
Sec motion ra |
-004 |
|
Pri motion dec |
-042 |
|
Sec motion dec |
-033 |
|
Notes |
|
|
rPM=0.368
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Delphinus |
|
Tycho2 |
1102-00878-1 |
|
Gaia DR2 |
1761146430580021120 |
|
WDS 20498+1321 HJ 1578 : NOTES
No records found.
REFERENCES
refcode |
metd |
author |
reference |
HJ_1826 |
Mb - |
Herschel, J.F.W. |
1826MmRAS...2..459H |
HJ_1826 |
|
MemRAS 2, 459, 1826 |
|
HJ_1829a |
Mb - |
Herschel, J.F.W. |
1829MmRAS...3...47H |
HJ_1829a |
|
MemRAS 3, 47, 1829 |
|
HJ_1829b |
Mb - |
Herschel, J.F.W. |
1829MmRAS...3..177H |
HJ_1829b |
|
MemRAS 3, 177, 1829 |
|
HJ_1831 |
Ma - |
Herschel, J.F.W. |
1831MmRAS...4..331H |
HJ_1831 |
+Mb |
MemRAS 4, part 2, 331, 1831 |
|
HJ_1833a |
Ma - |
Herschel, J.F.W. |
1833MmRAS...5...13H |
HJ_1833a |
+Mb |
MemRAS 5, 13, 1833 |
|
HJ_1833b |
orb - |
Herschel, J.F.W. |
1833MmRAS...5..171H |
HJ_1833b |
|
MemRAS 5, 171, 1833 |
|
HJ_1833c |
Mb - |
Herschel, J.F.W. |
1833MmRAS...6....1H |
HJ_1833c |
|
MemRAS 6, 1, 1833 |
|
HJ_1833d |
orb - |
Herschel, J.F.W. |
1833MmRAS...6..149H |
HJ_1833d |
|
MemRAS 6, 149, 1833 |
|
HJ_1835 |
Ma - |
Herschel, J.F.W. |
1835MmRAS...8...37H |
HJ_1835 |
+Mb |
MemRAS 8, 37, 1835 |
|
HJ_1836 |
Mb - |
Herschel, J.F.W. |
1836MmRAS...9..193H |
HJ_1836 |
|
MemRAS 9, 193, 1836 |
|
HJ_1847a |
Ma j |
Herschel, J.F.W. |
. |
HJ_1847a |
+Mb |
Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838) |
|
HJ_1847b |
Ma j |
Herschel, J.F.W. |
. |
HJ_1847b |
|
Cape Results, London, 1847 |
|
HJ_1850 |
orb - |
Herschel, J.F.W. |
1850MmRAS..18...47H |
HJ_1850 |
|
MemRAS 18, 47, 1850 |
|
HJ_1870 |
Mb - |
Herschel, J.F.W. |
1870MmRAS..38....1H |
HJ_1870 |
|
MemRAS 38, 1, 1870 |
|
HJ_1874A |
- |
Herschel, J.F.W. |
1874MNRAS..35...28B |
HJ_1874A |
|
cited by Burnham (MNRAS 35, 28, 1874) |
|
HJ_1875A |
Ma - |
Herschel, J.F.W. |
1875AN.....85..323D |
HJ_1875A |
+Mb |
cited by Doberck, 1875 (see Dob1875b,f,g,h) |
|
HJ_1880A |
Ma - |
Herschel, J.F.W. |
1880Obs.....3..508G |
HJ_1880A |
+Mb |
cited by Gledhill (Obs 3, 508, 1880) |
|
HJ_1880B |
Mb - |
Herschel, J.F.W. |
1880MNRAS..40..497B |
HJ_1880B |
|
cited by Burnham (MNRAS 40, 497, 1880) |
|
HJ_1897A |
Ma j |
Herschel, J.F.W. |
1897MNRAS..57..541S |
HJ_1897A |
|
cited by See (MNRAS 57, 541, 1897) |
|
HJ_1905A |
Ma - |
Herschel, J.F.W. |
1905LicOB...3..147A |
HJ_1905A |
+Mb |
cited by Aitken (Lick Obs. Bull. 3, 147, 1905) |
|
HJ_1906A |
Ma - |
Herschel, J.F.W. |
1906MmRAS..56....1L |
HJ_1906A |
+Mb |
cited by Lewis (MemRAS 56, 1, 1906) |
|
HJ_1906B |
Ma - |
Herschel, J.F.W. |
1906QB821.B972..... |
HJ_1906B |
+Mb |
cited in BDS (Burnham Double Star Cat.), 1906 |
|
HJ_1927A |
Mb - |
Herschel, J.F.W. |
1927sdsc.book...... |
HJ_1927A |
|
cited in SDS (Southern Double Star Catalog), 1927 |
|
HJ_1932A |
Mb - |
Herschel, J.F.W. |
1932QB821.A43...... |
HJ_1932A |
|
cited in ADS (Aitken Double Star Cat.), 1932 |
|
HJ_9999 |
M j |
Herschel, J.F.W. |
................... |
HJ_9999 |
+Ma |
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 |
20498+1321 |
HJ 1578 |
|
2000 |
2 |
311 |
11.4 |
9.84 |
12.01 |
|
|
204953.07+132027.7 |
20498+1321 |
HJ 1578 |
|
2001 |
4 |
311 |
11.5 |
9.84 |
12.01 |
|
D |
204953.07+132027.7 |
20498+1321 |
HJ 1578 |
|
2010 |
5 |
311 |
11.2 |
9.84 |
12.01 |
|
|
204953.07+132027.7 |
20498+1321 |
HJ 1578 |
|
2015 |
6 |
311 |
11.5 |
9.84 |
12.01 |
|
|
204953.07+132027.7 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 20498+1321 HJ 1578 : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 20498+1321 HJ 1578 : MEASURES
No records found.
WDS 20498+1321 : 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 20498+1321 : ALADIN DSS IMAGE @ 20h 49m 53.07s +13° 20' 27.7"
WDS 20498+1321 HJ 1578 : 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 |
|
20498+1321 |
HJ 1578 |
|
311 |
11.5 |
1 |
Show |
|
20496+1322 |
TDT2565 |
|
136 |
1.4 |
5 |
Show |
|
20503+1317 |
BPM2279 |
|
146 |
89.2 |
7 |
Show |
|
20497+1331 |
BPM2277 |
|
190 |
94.4 |
11 |
Show |
|
20499+1255 |
HJ 1577 |
|
245 |
9.4 |
26 |
Show |
|
20516+1340 |
TDT2583 |
|
98 |
0.6 |
33 |
Show |
|
20488+1248 |
GWP3000 |
|
280 |
24.1 |
37 |
Show |
|
20502+1246 |
J 3277 |
|
326 |
4.1 |
38 |
Show |
|
20492+1243 |
GWP3001 |
|
126 |
94.3 |
39 |
Show |
|
20523+1304 |
GRV 390 |
|
107 |
42.6 |
39 |
Show |
|
20471+1257 |
BPM2265 |
|
51 |
16.1 |
48 |
Show |
|
20496+1233 |
BU 1495 |
AB |
19 |
52.1 |
48 |
Show |
|
20496+1233 |
BU 1495 |
AC |
86 |
105.5 |
48 |
Show |
|
20496+1233 |
BU 1495 |
AD |
276 |
189.6 |
48 |
Show |
|
20524+1353 |
BPM2285 |
|
88 |
101.7 |
49 |
Show |
|
20487+1407 |
LIT 34 |
|
206 |
9.5 |
50 |
Show |
|
20481+1404 |
UC 4293 |
|
5 |
14.4 |
51 |
Show |
|
20466+1334 |
GWP2996 |
|
157 |
54.2 |
51 |
Show |
|
20467+1343 |
BPM2262 |
|
331 |
74.6 |
52 |
Show |
|
20528+1351 |
UC 4315 |
AB |
157 |
14.6 |
53 |
Show |
|
20486+1223 |
BPM2273 |
|
132 |
52.3 |
61 |
Show |
|
20541+1306 |
STF2734 |
|
227 |
24.4 |
63 |
Show |
|
20457+1302 |
WFC 258 |
|
284 |
11.7 |
65 |
Show |
|
20495+1426 |
BRT1955 |
|
109 |
5.0 |
67 |
Show |
|
20520+1422 |
BRT1956 |
|
197 |
6.4 |
70 |
Show |
|
20529+1415 |
GAI9015 |
AB |
277 |
1.3 |
71 |
Show |
|
20529+1415 |
GAI9015 |
AC |
167 |
51.8 |
71 |
Show |
|
20500+1432 |
CVR 874 |
|
82 |
16.7 |
72 |
Show |
|
20460+1235 |
KPP 477 |
|
52 |
4.5 |
73 |
Show |
|
20468+1420 |
BRT1347 |
|
30 |
3.3 |
74 |
Show |
|
20458+1405 |
BPM2256 |
|
194 |
73.0 |
75 |
Show |
|
20541+1402 |
J 846 |
|
155 |
3.6 |
75 |
Show |
|
20515+1432 |
GRV 388 |
|
239 |
51.4 |
77 |
Show |
|
20550+1259 |
BPM2293 |
|
25 |
100.2 |
78 |
Show |
|
20477+1430 |
TDT2542 |
|
76 |
0.5 |
78 |
Show |
|
20446+1333 |
YSC 242 |
AB |
157 |
1.5 |
78 |
Show |
|
20446+1312 |
TDS1098 |
|
279 |
0.9 |
78 |
Show |
|
20450+1244 |
BU 64 |
AB |
174 |
0.7 |
81 |
Show |
|
20450+1244 |
STTA209 |
AC |
155 |
97.2 |
81 |
Show |
|
20450+1244 |
BU 64 |
AD |
117 |
64.3 |
81 |
Show |
|
20450+1244 |
D 32 |
CD |
15 |
60.8 |
81 |
Show |
|
20548+1403 |
BPM2291 |
|
100 |
25.7 |
84 |
Show |
|
20519+1203 |
J 3245 |
|
249 |
3.8 |
84 |
Show |
|
20465+1429 |
BPM2260 |
|
89 |
86.7 |
84 |
Show |
|
20549+1236 |
BPM2292 |
|
143 |
61.9 |
86 |
Show |
|
20483+1444 |
LSC 93 |
|
142 |
0.2 |
88 |
Show |
|
20524+1200 |
GWP3008 |
|
252 |
11.1 |
89 |
Show |
|
20440+1256 |
DAM 218 |
|
342 |
5.7 |
90 |
Show |
|
20438+1330 |
BPM2238 |
|
50 |
66.9 |
90 |
Show |
|
20553+1236 |
BPM2295 |
|
182 |
40.1 |
91 |
Show |
|
20485+1450 |
BRT1349 |
|
46 |
2.7 |
92 |
|
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WDS 20498+1321 : COMPONENTS
20498+1321 A
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
204953.07+132027.7 |
|
Mag |
9.84 |
|
PmRA |
9.00 |
|
PmDE |
-42.0 |
|
Tycho2 |
1102-00878-1 |
|
DM |
BD+12 4475 |
|
Tycho2 |
1102-00878-1 |
|
Pflag |
|
|
RAmdeg |
312.47114579 |
|
DEmdeg |
13.34103529 |
|
PmRA |
9.0 |
|
PmDE |
-43.9 |
|
E RAmdeg |
19 |
|
E DEmdeg |
20 |
|
E pmRA |
1.2 |
|
E pmDE |
1.2 |
|
EpRAm |
1987.28 |
|
EpDEm |
1987.74 |
|
Num |
5 |
|
Q RAmdeg |
1.5 |
|
Q DEmdeg |
0.6 |
|
Q pmRA |
1.6 |
|
Q pmDE |
0.5 |
|
BTmag |
10.522 |
|
E BTmag |
0.037 |
|
VTmag |
9.838 |
|
E VTmag |
0.030 |
|
Prox |
996 |
|
TYC |
T |
|
HIP |
|
|
CCDM |
|
|
RAdeg |
312.47112917 |
|
DEdeg |
13.34113528 |
|
EpRA 1990 |
1.74 |
|
EpDE 1990 |
1.73 |
|
E RAdeg |
20.7 |
|
E DEdeg |
21.3 |
|
Posflg |
|
|
Corr |
-0.2 |
|
20498+1321 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
204952.49+132035.3 |
|
Mag |
12.01 |
|
PmRA |
-4.00 |
|
PmDE |
-33.0 |
|
Calc delta mag |
2.17 |
|
Calc coord |
yes |
|