18422+8818 HJ 2971 AB
18h 42m 13.39s +88° 18' 10.9" P.A. 163.00 sep 50.5 mag 9.93,12.61 Sp K8 dist. 39 pc (127.22 l.y.)
| Coord 2000 |
18422+8818 |
|
Discov num |
HJ 2971 |
|
Comp |
AB |
|
Coord arcsec 2000 |
18 42 13.39 +88 18 10.9 |
|
| Date first |
1999 |
|
Date last |
2015 |
|
Obs |
7 |
|
| Pa first |
164 |
|
Pa last |
163.3 |
|
P.A. Now (θ) |
163.3° |
|
| Sep first |
48.0 |
|
Sep last |
50.45 |
|
Sep. Now (ρ) |
50.45" |
|
| Mag pri |
9.93 |
|
Mag sec |
12.61 |
|
delta mag (ΔM) |
2.68 |
|
Spectral class |
K8 (yellow-orange) |
|
| Pri motion ra |
-093 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
+146 |
|
Sec motion dec |
+002 |
|
| Notes |
|
|
rPM=0.975
This double is not physical.
18422+8818 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
18 42 13 +88 18 11 |
HJ 2971 AB |
2015 |
7 |
163 |
50.5 |
9.93 |
12.61 |
2.68 |
|
<=== |
| Show |
|
|
18 42 13 +88 18 11 |
HJ 2971 AC |
2015 |
14 |
66 |
28.5 |
9.93 |
11.53 |
1.60 |
|
|
| Show |
|
|
18 42 43 +88 17 25 |
HJ 2971 BC |
2015 |
7 |
11 |
61.0 |
12.61 |
11.53 |
1.08 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Ursa Minor |
|
HIP |
91720 |
|
Tycho2 |
4660-00194-1 |
|
Gaia DR2 |
2305262196492623360 |
|
| BD |
BD+87 183 |
|
Distance |
39 |
|
Distance ly |
127.22 |
|
WDS 18422+8818 HJ 2971 AB : 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 |
| 18422+8818 |
HJ 2971 |
AB |
1966 |
2 |
226 |
12.0 |
9.76 |
12.68 |
K8 |
|
184213.31+881810.9 |
| 18422+8818 |
HJ 2971 |
AB |
2000 |
1 |
164 |
48.1 |
9.93 |
12.61 |
K8 |
|
184213.31+881810.9 |
| 18422+8818 |
HJ 2971 |
AB |
2010 |
3 |
164 |
49.7 |
9.93 |
12.61 |
K8 |
|
184213.39+881810.9 |
| 18422+8818 |
HJ 2971 |
AB |
2015 |
7 |
164 |
50.5 |
9.93 |
12.61 |
K8 |
|
184213.39+881810.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 18422+8818 HJ 2971 AB : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 18422+8818 HJ 2971 AB : MEASURES
No records found.
WDS 18422+8818 : 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 18422+8818 : ALADIN DSS IMAGE @ 18h 42m 13.39s +88° 18' 10.9"
WDS 18422+8818 HJ 2971 AB : 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 |
|
18422+8818 |
HJ 2971 |
AB |
163 |
50.5 |
1 |
| Show |
|
18422+8818 |
HJ 2971 |
AC |
66 |
28.5 |
1 |
| Show |
|
18422+8818 |
HJ 2971 |
BC |
11 |
61.0 |
1 |
| Show |
|
18281+8855 |
LOC 383 |
|
205 |
6.3 |
38 |
| Show |
|
18584+8740 |
LOC 396 |
|
142 |
23.8 |
40 |
| Show |
|
18453+8643 |
LOC 395 |
|
209 |
2.1 |
95 |
| Show |
|
18243+8544 |
TDT 837 |
|
350 |
0.8 |
156 |
| Show |
|
18282+8542 |
LOC 378 |
|
242 |
3.6 |
157 |
| Show |
|
18569+8512 |
MLR 218 |
|
57 |
2.1 |
187 |
| Show |
|
18274+8459 |
LOC 382 |
|
292 |
1.8 |
200 |
| Show |
|
18277+8459 |
LOC 379 |
AC |
95 |
1.1 |
200 |
| Show |
|
18492+8438 |
LOC 394 |
|
14 |
1.6 |
221 |
| Show |
|
18322+8415 |
LDS1888 |
|
102 |
6.0 |
244 |
| Show |
|
18399+8319 |
SKF1317 |
|
2 |
115.6 |
300 |
|
|
WDS 18422+8818 : COMPONENTS
| |
A |
B |
| B |
pa=164.0°
sep=47.96"
| |
| C |
pa=3.8°
sep=11.66"
| pa=347.8°
sep=59.06"
|
18422+8818 A
| Coord arcsec 2000 |
184213.39+881810.9 |
|
Mag |
9.93 |
|
Spectral class |
K8 (yellow-orange) |
|
PmRA |
-93.00 |
|
| PmDE |
146.0 |
|
HIP |
91720 |
|
Tycho2 |
4660-00194-1 |
|
BD |
BD+87 183 |
|
| Tycho2 |
4660-00194-1 |
|
Pflag |
|
|
RAmdeg |
280.55549549 |
|
DEmdeg |
88.30303798 |
|
| PmRA |
-92.3 |
|
PmDE |
145.8 |
|
E RAmdeg |
17 |
|
E DEmdeg |
16 |
|
| E pmRA |
1.1 |
|
E pmDE |
1.1 |
|
EpRAm |
1987.42 |
|
EpDEm |
1987.88 |
|
| Num |
13 |
|
Q RAmdeg |
0.9 |
|
Q DEmdeg |
1.0 |
|
Q pmRA |
0.8 |
|
| Q pmDE |
1.0 |
|
BTmag |
11.187 |
|
E BTmag |
0.046 |
|
VTmag |
9.933 |
|
| E VTmag |
0.024 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
91720 |
|
| CCDM |
|
|
RAdeg |
280.56272444 |
|
DEdeg |
88.30270472 |
|
EpRA 1990 |
1.69 |
|
| EpDE 1990 |
1.76 |
|
E RAdeg |
19.0 |
|
E DEdeg |
17.6 |
|
Posflg |
|
|
| Corr |
-0.1 |
|
| Catalog |
H |
|
HIP |
91720 |
|
Proxy |
|
|
RAhms |
18 42 15.21 |
|
| DEdms |
+88 18 09.7 |
|
Vmag |
9.96 |
|
VarFlag |
|
|
R Vmag |
G |
|
| RAdeg |
280.563 |
|
DEdeg |
88.3027 |
|
AstroRef |
|
|
Plx |
23.29 |
|
| CCDM |
18422+8818 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
1 |
|
| MultFlag |
|
|
Source |
|
|
Qual |
S |
|
M HIP |
|
|
| Theta |
|
|
Rho |
|
|
HD |
|
|
BD |
BD+87 183 |
|
| CD |
|
|
CP |
|
|
Dm number |
+87 183 |
|
VIred |
1.12 |
|
| SpType |
K8 |
|
R SpType |
|
|
Coord arcsec 2000 |
184215.21+881809.7 |
|
| HIP |
91720 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
| RArad |
4.8967548557 |
|
DErad |
1.5411725299 |
|
Plx |
25.64 |
|
PmRA |
-92.42 |
|
| PmDE |
144.89 |
|
E RArad |
1.06 |
|
E DErad |
1.08 |
|
E Plx |
1.27 |
|
| E pmRA |
1.27 |
|
E pmDE |
1.36 |
|
Hpmag |
9.931 |
|
E Hpmag |
0.0035 |
|
| SHp |
0.029 |
|
VA |
0 |
|
BV |
1.06 |
|
E BV |
0.02 |
|
| VI |
1.12 |
|
| Ccdm |
18422+8818 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
| Note2 |
|
|
Discov num |
|
|
DRAs |
-0.35 |
|
DDEs |
12.6 |
|
| R dRAs |
10 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
| Obs |
3 |
|
Vmag |
9.4 |
|
Sp |
|
|
PmNote |
* |
|
| PmRA |
-83 |
|
PmDE |
184 |
|
Dm number |
+87 183 |
|
Cat1 |
BD |
|
| Name2 |
+88 103 |
|
Cat2 |
AGK2/3 |
|
HD |
|
|
M HD |
|
|
| ADS BDS |
B 9858 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
19453N8807A |
|
| HIC |
91720 |
|
18422+8818 B
| Coord arcsec 2000 |
184243.08+881724.8 |
|
Coord calc |
184243.08+881724.8 |
|
Mag |
12.61 |
|
PmRA |
-5.00 |
|
| PmDE |
2.0 |
|
Calc delta mag |
2.68 |
|
| Ccdm |
18422+8818 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
| Note2 |
|
|
Discov num |
HJ 2971 |
|
DRAs |
|
|
DDEs |
|
|
| R dRAs |
|
|
Year |
1830 |
|
Theta |
207 |
|
Rho |
12.0 |
|
| Obs |
1 |
|
Vmag |
12.4 |
|
Sp |
|
|
PmNote |
|
|
| PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
| Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
| ADS BDS |
B 9858 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
19453N8807B |
|
| HIC |
91724 |
|
18422+8818 C
| Coord arcsec 2000 |
184215.12+881822.5 |
|
Mag |
11.53 |
|
PmRA |
-3.00 |
|
PmDE |
1.0 |
|
| Calc delta mag |
1.6 |
|
Calc coord |
yes |
|
| Ccdm |
18422+8818 |
|
RComp |
|
|
Comp |
C |
|
Note1 |
|
|
| Note2 |
|
|
Discov num |
HJ 2971 |
|
DRAs |
|
|
DDEs |
|
|
| R dRAs |
|
|
Year |
1830 |
|
Theta |
207 |
|
Rho |
12.0 |
|
| Obs |
1 |
|
Vmag |
12.4 |
|
Sp |
|
|
PmNote |
|
|
| PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
| Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
| ADS BDS |
B 9858 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
19453N8807C |
|
| HIC |
91724 |
|
