15292+8027 STF 1972 AB (Pi1 UMi)
15h 29m 11.19s +80° 26' 55.0" P.A. 79.00 sep 31.6 mag 6.64,7.30 Sp G1.5V+G9V dist. 21.85 pc (71.27 l.y.)
Coord 2000 |
15292+8027 |
|
Discov num |
STF1972 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 29 11.19 +80 26 55.0 |
|
Date first |
1782 |
|
Date last |
2018 |
|
Obs |
107 |
|
Pa first |
87 |
|
Pa last |
78.9 |
|
P.A. Now (θ) |
78.9° |
|
Sep first |
26.4 |
|
Sep last |
31.63 |
|
Sep. Now (ρ) |
31.63" |
|
Mag pri |
6.64 |
|
Mag sec |
7.30 |
|
delta mag (ΔM) |
0.66 |
|
Spectral class |
G1.5V+G9V (yellow/yellow) |
|
Pri motion ra |
-225 |
|
Sec motion ra |
-217 |
|
Pri motion dec |
+108 |
|
Sec motion dec |
+106 |
|
Notes |
N
T
(See Notes, Parallax indicates physical) |
|
rPM=0.033 (< 0.3, Physical double)
This double is physical.
15292+8027 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
Pi1 UMi |
2556 |
15 29 11 +80 26 55 |
STF 1972 AB |
2018 |
107 |
79 |
31.6 |
6.64 |
7.30 |
0.66 |
|
<=== |
Show |
|
2556 |
15 29 11 +80 26 55 |
STF 1972 AC |
2020 |
9 |
101 |
188.1 |
6.64 |
11.40 |
4.76 |
|
|
Show |
|
|
15 29 24 +80 27 01 |
LAF 54 BD |
2005 |
1 |
271 |
6.9 |
5.60 |
20.10 |
14.50 |
|
|
Show |
|
|
15 29 24 +80 27 01 |
LAF 54 BE |
2005 |
1 |
272 |
7.4 |
5.60 |
20.30 |
14.70 |
|
|
Quintuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
Pi1 UMi |
|
Constellation |
Ursa Minor |
|
SAO |
2556 |
|
HIP |
75809 |
|
Tycho2 |
4566-01950-1 |
|
Gaia DR2 |
1720995598827435648 |
|
HD |
139777 |
|
HR |
5829 |
|
GC |
20929 |
|
ADS |
9696 |
|
BD |
BD+80 480 |
|
Bayer |
Pi 1 Ursae Minoris |
|
Bayer name |
Pi1 UMi |
|
Distance |
21.85 |
|
Distance ly |
71.27 |
|
Bayer greek |
π1 UMi |
|
WDS 15292+8027 STF 1972 AB (Pi1 UMi) : NOTES
discov_num |
notes |
refcode |
STF1972 |
LDS1823. A is a spectroscopic binary. Composite spectrum: |
|
|
G0IV-V+G8IV-V. B is BD+80@481, and is also a spectroscopic binary. |
|
|
AB: NLTT 40576/40590 |
Chm2004 |
|
AB: HJL 224. |
HJL1986 |
|
AB: H 4 90. |
MEv2010 |
REFERENCES
refcode |
metd |
author |
reference |
Chm2004 |
E - |
Chaname, J. & Gould, A. |
2004ApJ...601..289C |
Chm2004 |
|
ApJ 601, 289, 2004 |
|
Chm2004 |
|
(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early |
|
Chm2004 |
|
versions of 2MASS and UCAC, with date given only as "circa 2000". Measures |
|
Chm2004 |
|
identical to discovery observations - predominantly close pairs - were assumed |
|
Chm2004 |
|
not new observations, so not included in WDS. Similar concerns when primary and |
|
Chm2004 |
|
secondary magnitudes or proper motions were the same.) |
|
HJL1986 |
Pa - |
Halbwachs, J.L. |
1986A&AS...66..131H |
HJL1986 |
|
A&AS 66, 131, 1986 |
|
HJL1986 |
|
(Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added |
|
HJL1986 |
|
only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113) |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
DISCOVERER
idgroup |
discov |
author |
1 |
LAF |
Lafreniere, D., Doyon, R., Marois, C., Nadeau, D., Oppenheimer, B.R., Roche, P.F., |
1 |
LAF |
Rigaut, F., Graham, J.R., et al. |
10 |
LAF |
Lafreniere, D., Jayawardhana, R., Janson, M., Helling, C., Witte, S., & |
10 |
LAF |
Hauschildt, P. |
13 |
STF |
Struve, F.G.W. |
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
15292+8027 |
STF1972 |
AB |
2007 |
76 |
79 |
31.3 |
6.64 |
7.30 |
|
NZDV |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2008 |
77 |
79 |
31.3 |
6.64 |
7.30 |
|
NZDV |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2010 |
79 |
79 |
31.4 |
6.64 |
7.30 |
|
NZDV |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2013 |
88 |
79 |
31.4 |
6.64 |
7.30 |
G0IV-V |
NZDV |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2015 |
90 |
78 |
31.8 |
6.64 |
7.30 |
G0IV-V |
NZ V |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2016 |
96 |
81 |
31.8 |
6.64 |
7.30 |
G0IV-V |
NZ V |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2017 |
97 |
80 |
31.8 |
6.64 |
7.30 |
G0IV-V |
NZ V |
152911.19+802655.0 |
15292+8027 |
STF1972 |
AB |
2018 |
99 |
80 |
31.6 |
6.64 |
7.30 |
G0IV-V |
NZ V |
152911.19+802655.0 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 15292+8027 STF 1972 AB (Pi1 UMi) : VISUAL OBSERVATIONS REPORTS
WDS 15292+8027 STF 1972 AB (Pi1 UMi) : MEASURES
No records found.
WDS 15292+8027 (Pi1 UMi) : 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 15292+8027 (Pi1 UMi) : ALADIN DSS IMAGE @ 15h 29m 11.19s +80° 26' 55.0"
WDS 15292+8027 STF 1972 AB (Pi1 UMi) : 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 |
|
15292+8027 |
STF1972 |
AB |
79 |
31.6 |
1 |
Show |
|
15292+8027 |
STF1972 |
AC |
101 |
188.1 |
1 |
Show |
|
15292+8027 |
LAF 54 |
BD |
271 |
6.9 |
1 |
Show |
|
15292+8027 |
LAF 54 |
BE |
272 |
7.4 |
1 |
Show |
|
15309+8020 |
MFL 195 |
|
348 |
9.6 |
8 |
Show |
|
15288+8037 |
HAU 23 |
|
65 |
34.9 |
10 |
Show |
|
15386+7958 |
LDS1827 |
|
45 |
6.0 |
37 |
Show |
|
15325+8103 |
STF1980 |
|
47 |
10.2 |
38 |
Show |
|
15396+7959 |
STF1989 |
|
23 |
0.7 |
39 |
Show |
|
15355+8106 |
TDS9554 |
|
23 |
1.1 |
43 |
Show |
|
15365+7943 |
TDS9560 |
|
17 |
0.6 |
49 |
Show |
|
15149+8102 |
TDS9464 |
|
59 |
0.5 |
50 |
Show |
|
15434+8119 |
A 856 |
AB |
345 |
5.2 |
63 |
Show |
|
15434+8119 |
A 856 |
AC |
343 |
62.7 |
63 |
Show |
|
15198+7923 |
MFL 197 |
|
94 |
5.4 |
69 |
Show |
|
15326+7907 |
KPP3292 |
|
183 |
3.0 |
81 |
Show |
|
15446+8142 |
MFL 167 |
|
237 |
9.7 |
83 |
Show |
|
15118+7849 |
MFL 188 |
|
60 |
8.7 |
109 |
Show |
|
15144+8213 |
UC 2967 |
|
207 |
47.9 |
111 |
Show |
|
15490+8209 |
MFL 185 |
AC |
336 |
15.5 |
112 |
Show |
|
15223+7835 |
KPP 342 |
|
323 |
3.7 |
114 |
Show |
|
15178+7817 |
TDS9472 |
|
95 |
1.1 |
134 |
Show |
|
15281+8245 |
MFL 166 |
|
115 |
7.6 |
138 |
Show |
|
15364+8313 |
MLR 348 |
|
101 |
0.8 |
168 |
Show |
|
15479+7746 |
STF1997 |
|
339 |
18.3 |
170 |
Show |
|
15476+8316 |
STF2002 |
|
312 |
42.2 |
174 |
Show |
|
15356+7726 |
LDS1825 |
AB |
280 |
182.4 |
183 |
Show |
|
15356+7726 |
WIS 288 |
AC |
318 |
999.9 |
183 |
Show |
|
15476+7722 |
MFL 186 |
|
248 |
6.1 |
193 |
Show |
|
15487+8337 |
STF2034 |
|
110 |
1.1 |
195 |
Show |
|
15282+7710 |
MFL 147 |
|
147 |
59.7 |
197 |
Show |
|
15195+7710 |
SKF1235 |
|
159 |
7.1 |
200 |
Show |
|
15202+7708 |
LDS1819 |
|
226 |
11.8 |
201 |
Show |
|
15266+7701 |
LDS1821 |
|
72 |
4.5 |
205 |
Show |
|
15325+7646 |
HU 911 |
|
268 |
1.6 |
221 |
Show |
|
15103+7648 |
LDS1812 |
|
160 |
90.2 |
226 |
Show |
|
15434+7643 |
MFL 172 |
|
317 |
5.7 |
228 |
Show |
|
15340+7632 |
LDS1824 |
|
180 |
1.9 |
236 |
Show |
|
15479+7636 |
MFL 183 |
|
259 |
31.9 |
238 |
Show |
|
15189+7626 |
MFL 198 |
|
237 |
11.0 |
243 |
Show |
|
15258+8430 |
MLR 347 |
|
214 |
0.2 |
244 |
Show |
|
15231+7620 |
MFL 148 |
|
143 |
60.0 |
248 |
Show |
|
15123+8446 |
TDS9444 |
|
350 |
0.4 |
261 |
Show |
|
15399+7606 |
MFL 171 |
|
132 |
4.1 |
264 |
Show |
|
15143+8452 |
TDS 771 |
|
226 |
1.1 |
267 |
Show |
|
15403+7601 |
HEI 787 |
|
255 |
2.9 |
268 |
Show |
|
15229+8457 |
MLR 345 |
|
229 |
0.8 |
271 |
|
|
WDS 15292+8027 : COMPONENTS
|
A |
B |
C |
D |
B |
pa=79.2°
sep=31.37"
| |
C |
pa=139.0°
sep=46.73"
| pa=180.2°
sep=41.15"
| |
D |
pa=78.5°
sep=30.29"
| pa=277.8°
sep=1.15"
| pa=358.6°
sep=41.32"
| |
E |
pa=78.2°
sep=30.23"
| pa=283.0°
sep=1.25"
| pa=358.5°
sep=41.44"
| pa=326.5°
sep=0.15"
|
15292+8027 A
Name |
Pi1 UMi |
|
Coord arcsec 2000 |
152911.19+802655.0 |
|
Mag |
6.64 |
|
Spectral class |
G1.5V (yellow) |
|
PmRA |
-225.00 |
|
PmDE |
108.0 |
|
SAO |
2556 |
|
HIP |
75809 |
|
Tycho2 |
4566-01950-1 |
|
HD |
139777 |
|
HR |
5829 |
|
GC |
20929 |
|
BD |
BD+80 480 |
|
Bayer |
Pi 1 |
|
Bayer name |
Pi1 |
|
Tycho2 |
4566-01950-1 |
|
Pflag |
|
|
RAmdeg |
232.29666362 |
|
DEmdeg |
80.44860457 |
|
PmRA |
-223.2 |
|
PmDE |
107.8 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.2 |
|
E pmDE |
1.2 |
|
EpRAm |
1991.52 |
|
EpDEm |
1991.48 |
|
Num |
11 |
|
Q RAmdeg |
0.8 |
|
Q DEmdeg |
0.8 |
|
Q pmRA |
0.7 |
|
Q pmDE |
0.7 |
|
BTmag |
7.367 |
|
E BTmag |
0.015 |
|
VTmag |
6.643 |
|
E VTmag |
0.010 |
|
Prox |
313 |
|
TYC |
T |
|
HIP |
75809 |
|
CCDM |
|
|
RAdeg |
232.29975694 |
|
DEdeg |
80.44835444 |
|
EpRA 1990 |
1.72 |
|
EpDE 1990 |
1.65 |
|
E RAdeg |
4.1 |
|
E DEdeg |
4.2 |
|
Posflg |
|
|
Corr |
0.0 |
|
SAO |
2556 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0944 |
|
DE1950 |
|
|
PmDE1950 |
0.115 |
|
Vmag |
6.5 |
|
SpType |
G5 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
20929 |
|
DM |
BD+80 480 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
139777 |
|
M HD |
0 |
|
GC |
20929 |
|
RA1950rad |
4.06663416 |
|
DE1950rad |
1.40701342 |
|
PmRA2000 |
-0.0917 |
|
PmDE2000 |
0.113 |
|
Catalog |
H |
|
HIP |
75809 |
|
Proxy |
|
|
RAhms |
15 29 11.97 |
|
DEdms |
+80 26 54.0 |
|
Vmag |
6.57 |
|
VarFlag |
|
|
R Vmag |
G |
|
RAdeg |
232.3 |
|
DEdeg |
80.4483 |
|
AstroRef |
|
|
Plx |
45.32 |
|
CCDM |
15293+8027 |
|
N CCDM |
I |
|
Nsys |
2 |
|
Ncomp |
1 |
|
MultFlag |
|
|
Source |
|
|
Qual |
|
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
139777 |
|
BD |
BD+80 480 |
|
CD |
|
|
CP |
|
|
Dm number |
+80 480 |
|
VIred |
0.73 |
|
SpType |
G8IV-V+... |
|
R SpType |
|
|
Coord arcsec 2000 |
152911.97+802654.0 |
|
HIP |
75809 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
RArad |
4.0543979862 |
|
DErad |
1.4040884141 |
|
Plx |
45.77 |
|
PmRA |
-224.25 |
|
PmDE |
108.19 |
|
E RArad |
0.34 |
|
E DErad |
0.33 |
|
E Plx |
0.37 |
|
E pmRA |
0.4 |
|
E pmDE |
0.4 |
|
Hpmag |
6.7384 |
|
E Hpmag |
0.0019 |
|
SHp |
0.017 |
|
VA |
0 |
|
BV |
0.665 |
|
E BV |
0.005 |
|
VI |
0.73 |
|
15292+8027 B
Coord arcsec 2000 |
152923.57+802700.9 |
|
Coord calc |
152923.57+802700.9 |
|
Mag |
5.6 |
|
Spectral class |
G9V (yellow) |
|
PmRA |
-217.00 |
|
PmDE |
106.0 |
|
Calc delta mag |
1.04 |
|
15292+8027 C
Coord arcsec 2000 |
152923.51+802619.8 |
|
Mag |
11.4 |
|
Calc delta mag |
4.76 |
|
Calc coord |
yes |
|
15292+8027 D
Coord arcsec 2000 |
152923.11+802701.1 |
|
Mag |
20.1 |
|
Calc delta mag |
13.46 |
|
Calc coord |
yes |
|
15292+8027 E
Coord arcsec 2000 |
152923.08+802701.2 |
|
Mag |
20.3 |
|
Calc delta mag |
13.66 |
|
Calc coord |
yes |
|