16212-2536 NOR 1 Aa1,2
16h 21m 11.32s -25° 35' 33.9" P.A. 89.00 sep 0.0 mag 3.30,4.10 Sp O9.5+B7 dist. 213.68 pc (697.02 l.y.)
Coord 2000 |
16212-2536 |
|
Discov num |
NOR 1 |
|
Comp |
Aa1,2 |
|
Coord arcsec 2000 |
16 21 11.32 -25 35 33.9 |
|
Date first |
2010 |
|
Date last |
2010 |
|
Obs |
1 |
|
Pa first |
89 |
|
Pa last |
88.5 |
|
P.A. Now (θ) |
88.5° |
|
Sep first |
0.0 |
|
Sep last |
0.003 |
|
Sep. Now (ρ) |
0.003" |
|
Mag pri |
3.30 |
|
Mag sec |
4.10 |
|
delta mag (ΔM) |
0.8 |
|
Spectral class |
O9.5+B7 (blue/blue-white) |
|
Pri motion ra |
-011 |
|
Sec motion ra |
|
|
Pri motion dec |
-016 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16212-2536 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
184336 |
16 21 11 -25 35 34 |
NOR 1 Aa1,2 |
2010 |
1 |
89 |
0.0 |
3.30 |
4.10 |
0.80 |
Y |
<=== |
Show |
|
184336 |
16 21 11 -25 35 34 |
BLM 4 Aa,Ab |
2019 |
28 |
217 |
0.4 |
3.06 |
5.24 |
2.18 |
|
|
Show |
Alniyat |
184336 |
16 21 11 -25 35 34 |
H 4 121 AB |
2019 |
45 |
269 |
20.5 |
2.89 |
8.42 |
5.53 |
|
|
Quadruple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Alniyat |
|
Constellation |
Scorpius |
|
SAO |
184336 |
|
HIP |
80112 |
|
Tycho2 |
6798-00540-1 |
|
Gaia DR2 |
6048602103659567488 |
|
HD |
147165 |
|
HR |
6084 |
|
GC |
21982 |
|
ADS |
10009 |
|
CD |
CD-2511485 |
|
CP |
CP-25 5785 |
|
Bayer |
Sigma Scorpii |
|
Bayer name |
Sig Sco |
|
Flamsteed |
20 Scorpii |
|
Flamsteed name |
20 Sco |
|
FK5 |
607 |
|
Distance |
213.68 |
|
Distance ly |
697.02 |
|
Bayer greek |
σ Sco |
|
Meaning |
support / shield of the heart |
|
SUSPECTED ORBITAL ELEMENTS
Identifier | 16212-2536 |
coord_arcsec_2000 | 162111.32-253533.9 |
Period (P) | 33.01d | ± 0.002 |
Periastron (T) | 34889m (1954.4y) | ± 1 |
Semi-major axis (a) | 3.62m | ± 0.06 |
Eccentricity (e) | 0.322 | ± 0.0012 |
Inclination (i) | 158.2° | ± 2.3 |
Longitude of periastron (ω) | 283° | ± 5 |
Node (Ω) | 104° | ± 5 |
Notes | n | |
Reference | Nor2007 | |
Equinox | | |
Last observation | 2006 | |
Grade | 8 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
350.6 |
0.004 |
2001-01-01 |
337.0 |
0.004 |
2002-01-01 |
322.8 |
0.004 |
2003-01-01 |
307.1 |
0.004 |
2004-01-01 |
288.6 |
0.004 |
2005-01-01 |
264.5 |
0.003 |
2006-01-01 |
230.0 |
0.003 |
2007-01-01 |
182.0 |
0.002 |
2008-01-01 |
135.2 |
0.003 |
2009-01-01 |
101.3 |
0.003 |
2010-01-01 |
76.6 |
0.004 |
2011-01-01 |
56.8 |
0.004 |
2012-01-01 |
39.9 |
0.004 |
2013-01-01 |
24.7 |
0.004 |
2014-01-01 |
10.6 |
0.004 |
2015-01-01 |
357.1 |
0.004 |
2016-01-01 |
343.6 |
0.004 |
2017-01-01 |
329.8 |
0.004 |
2018-01-01 |
314.9 |
0.004 |
2019-01-01 |
298.0 |
0.004 |
2020-01-01 |
277.0 |
0.003 |
2021-01-01 |
248.4 |
0.003 |
2022-01-01 |
206.4 |
0.002 |
2023-01-01 |
156.2 |
0.002 |
2024-01-01 |
116.1 |
0.003 |
2025-01-01 |
87.7 |
0.003 |
2026-01-01 |
65.8 |
0.004 |
2027-01-01 |
47.7 |
0.004 |
2028-01-01 |
31.8 |
0.004 |
2029-01-01 |
17.3 |
0.004 |
2030-01-01 |
3.5 |
0.004 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 16212-2536 NOR 1 Aa1,2 : NOTES
discov_num |
notes |
refcode |
BLM 4 |
A: sig Sco = 20 Sco = Alniyat. This system is comprised of a 33d SB |
|
|
components Aa1 and Aa2), with a third component (Ab) at 0.4" from the |
|
|
spectroscopic pair and a fourth component at about 20". The primary |
|
|
is a beta Cep variable. |
|
|
North et al. derive masses of 18.4 +/- 5.4 and 11.9 +/- 3.1 Msun for |
Nor2007 |
|
the two spectroscopic components; spectral types for the primary and |
|
|
secondary appear to be B1III and B1V, and the age is about 10Myr. |
|
|
1976.471: These measurements cannot be that of the SB system observed |
|
|
by Struve et al. (1961 ApJ, 133, 509) but probably relates to the more |
|
|
distant companion observed by Nather et al (1974) at a lunar |
Chu1974 |
|
occultation. The system is also a photometric variable. |
BLM1978 |
sig Sco |
Aa1,Aa2: Malkov et al. (2012) derive dynamical, photometric, and |
|
|
spectroscopic masses 56.66 +/- 21.97, 15.64, 16.98 Msun, respectively. |
Mlk2012 |
H 4 121 |
H IV 121. |
|
REFERENCES
refcode |
metd |
author |
reference |
BLM1978 |
S j |
Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. |
1978MNRAS.183..701M |
BLM1978 |
|
MNRAS 183, 701, 1978 |
|
Chu1974 |
O j |
Nather, R., Churms, J., & Wild, P. |
1974PASP...86..116N |
Chu1974 |
|
PASP 86, 116, 1974 |
|
Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
Mlk2012 |
|
A&A 546, A69, 2012 |
|
Nor2007 |
orb j |
North, J.R., Davis, J., Tuthill, P.G., Tango, W.J., & Robertson, J.G. |
2007MNRAS.380.1276N |
Nor2007 |
+Ks |
MNRAS 380, 1276, 2007 |
|
DISCOVERER
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
16212-2536 |
NOR 1 |
Aa1,2 |
2010 |
1 |
89 |
0.0 |
3.30 |
4.10 |
O9.5+B7 |
NO |
162111.32-253533.9 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 16212-2536 NOR 1 Aa1,2 : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 16212-2536 NOR 1 Aa1,2 : MEASURES
No records found.
WDS 16212-2536 : 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 16212-2536 : ALADIN DSS IMAGE @ 16h 21m 11.32s -25° 35' 33.9"
WDS 16212-2536 NOR 1 Aa1,2 : 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 |
|
16212-2536 |
BLM 4 |
Aa,Ab |
217 |
0.4 |
1 |
Show |
Alniyat |
16212-2536 |
H 4 121 |
AB |
269 |
20.5 |
1 |
Show |
Alniyat |
16212-2536 |
NOR 1 |
Aa1,2 |
89 |
0.0 |
1 |
Show |
|
16192-2551 |
USD1266 |
|
175 |
1.3 |
31 |
Show |
|
16237-2548 |
RST3019 |
|
6 |
0.8 |
37 |
Show |
|
16186-2518 |
LUH 2 |
|
223 |
0.9 |
40 |
Show |
|
16240-2525 |
TOK 773 |
|
8 |
2.1 |
41 |
Show |
|
16243-2545 |
USD1454 |
Aa,Ab |
74 |
0.5 |
43 |
Show |
|
16188-2610 |
REP 34 |
|
131 |
2.9 |
47 |
Show |
|
16250-2521 |
HDS2320 |
|
163 |
0.5 |
54 |
Show |
|
16238-2616 |
LAF 134 |
|
273 |
11.3 |
54 |
Show |
|
16244-2502 |
B 308 |
AB |
142 |
2.7 |
55 |
Show |
|
16244-2502 |
KOU 62 |
AC |
31 |
9.4 |
55 |
Show |
|
16234-2622 |
RSS 404 |
DF |
227 |
9.3 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DG |
184 |
2.7 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DH |
257 |
3.4 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DI |
143 |
7.4 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DJ |
34 |
2.1 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DK |
291 |
2.2 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DL |
95 |
6.2 |
56 |
Show |
|
16234-2622 |
CVN 98 |
DM |
299 |
8.6 |
56 |
Show |
|
16241-2457 |
TOK 775 |
|
68 |
0.2 |
56 |
Show |
|
16183-2619 |
BOY 22 |
|
192 |
0.1 |
59 |
Show |
|
16253-2512 |
RAT 1 |
AB |
76 |
0.2 |
60 |
Show |
|
16253-2512 |
SFR 4 |
Ba,Bb |
164 |
0.0 |
60 |
Show |
|
16168-2552 |
KOU 60 |
|
134 |
3.7 |
61 |
Show |
|
16250-2500 |
REP 36 |
|
263 |
1.5 |
64 |
Show |
|
16167-2514 |
B 2806 |
DG |
35 |
12.6 |
65 |
Show |
|
16250-2456 |
KRS 5 |
Aa,Ab |
14 |
0.1 |
66 |
Show |
|
16250-2456 |
REP 35 |
AB |
79 |
1.1 |
66 |
Show |
|
16188-2633 |
REP 33 |
|
160 |
0.6 |
66 |
Show |
|
16163-2542 |
USD1141 |
|
310 |
1.3 |
67 |
Show |
|
16175-2451 |
TOK 769 |
|
309 |
0.4 |
67 |
Show |
|
16228-2431 |
USD1423 |
|
320 |
0.6 |
68 |
Show |
|
16207-2426 |
KSA 100 |
|
164 |
26.5 |
71 |
Show |
|
16263-2521 |
REP 38 |
|
26 |
1.1 |
71 |
Show |
|
16256-2614 |
ELP 36 |
|
23 |
0.9 |
72 |
Show |
|
16265-2527 |
RAT 6 |
|
9 |
1.8 |
72 |
Show |
|
16164-2503 |
HDS2300 |
CF |
177 |
13.9 |
73 |
Show |
|
16204-2423 |
LDS 557 |
|
43 |
12.0 |
73 |
Show |
|
16161-2507 |
LDS4658 |
|
186 |
51.3 |
74 |
Show |
|
16164-2459 |
KOU 59 |
AB |
119 |
0.9 |
75 |
Show |
|
16223-2422 |
HDS2312 |
|
239 |
0.3 |
76 |
Show |
|
16218-2651 |
UC 3158 |
|
216 |
78.6 |
76 |
Show |
|
16175-2439 |
USD1201 |
|
62 |
3.9 |
76 |
Show |
|
16173-2437 |
WAJ 1 |
|
99 |
0.1 |
79 |
Show |
|
16153-2540 |
USD1093 |
|
350 |
0.1 |
80 |
Show |
|
16251-2432 |
TOK 777 |
|
103 |
0.3 |
83 |
Show |
|
16149-2544 |
UC 3142 |
|
351 |
44.6 |
85 |
Show |
|
16149-2529 |
SKF1313 |
|
36 |
46.2 |
86 |
Show |
|
16258-2634 |
LSC 65 |
|
136 |
0.3 |
86 |
|
|
WDS 16212-2536 : COMPONENTS
|
A |
Aa2 |
Ab |
Aa2 |
pa=88.3°
sep=0.00"
| |
Ab |
pa=214.3°
sep=0.41"
| pa=214.6°
sep=0.41"
| |
B |
pa=268.9°
sep=18.47"
| pa=268.9°
sep=18.47"
| pa=269.9°
sep=18.24"
|
16212-2536 A
Common name |
Alniyat |
|
Meaning |
support / shield of the heart |
|
Other names |
Al Niyat |
|
Coord arcsec 2000 |
162111.32-253533.9 |
|
Mag |
2.89 |
|
Spectral class |
B0III (blue-white) |
|
PmRA |
-10.00 |
|
PmDE |
-21.0 |
|
SAO |
184336 |
|
HIP |
80112 |
|
Tycho2 |
6798-00540-1 |
|
HD |
147165 |
|
HR |
6084 |
|
GC |
21982 |
|
CD |
CD-2511485 |
|
CP |
CP-25 5785 |
|
Bayer |
Sigma Scorpii |
|
Bayer name |
Sig Sco |
|
Flamsteed |
20 Scorpii |
|
Flamsteed name |
20 Sco |
|
FK5 |
607 |
|
Tycho2 |
6798-00540-1 |
|
Pflag |
|
|
RAmdeg |
245.29713575 |
|
DEmdeg |
-25.59280657 |
|
PmRA |
-9.9 |
|
PmDE |
-21.1 |
|
E RAmdeg |
3 |
|
E DEmdeg |
3 |
|
E pmRA |
0.4 |
|
E pmDE |
0.5 |
|
EpRAm |
1991.07 |
|
EpDEm |
1990.71 |
|
Num |
30 |
|
Q RAmdeg |
1.3 |
|
Q DEmdeg |
2.0 |
|
Q pmRA |
1.5 |
|
Q pmDE |
1.6 |
|
BTmag |
3.024 |
|
E BTmag |
0.014 |
|
VTmag |
2.911 |
|
E VTmag |
0.009 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
80112 |
|
CCDM |
AC |
|
RAdeg |
245.29716139 |
|
DEdeg |
-25.59275556 |
|
EpRA 1990 |
1.71 |
|
EpDE 1990 |
1.30 |
|
E RAdeg |
3.2 |
|
E DEdeg |
3.4 |
|
Posflg |
P |
|
Corr |
0.2 |
|
SAO |
184336 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0007 |
|
DE1950 |
|
|
PmDE1950 |
-0.023 |
|
Vmag |
3.1 |
|
SpType |
B1 |
|
Double code |
|
|
Source |
74 |
|
CatNum |
607 |
|
DM |
CD-2511485 |
|
DMcomp |
|
|
BDsup |
|
|
HD |
147165 |
|
M HD |
0 |
|
GC |
21982 |
|
RA1950rad |
4.26796029 |
|
DE1950rad |
-0.44461361 |
|
PmRA2000 |
-0.0008 |
|
PmDE2000 |
-0.02 |
|
Catalog |
H |
|
HIP |
80112 |
|
Proxy |
H |
|
RAhms |
16 21 11.32 |
|
DEdms |
-25 35 33.9 |
|
Vmag |
2.9 |
|
VarFlag |
1 |
|
R Vmag |
G |
|
RAdeg |
245.297 |
|
DEdeg |
-25.5928 |
|
AstroRef |
A |
|
Plx |
4.44 |
|
CCDM |
16212-2536 |
|
N CCDM |
I |
|
Nsys |
1 |
|
Ncomp |
2 |
|
MultFlag |
C |
|
Source |
|
|
Qual |
A |
|
M HIP |
AC |
|
Theta |
258 |
|
Rho |
0.428 |
|
HD |
147165 |
|
BD |
|
|
CD |
CD-2511485 |
|
CP |
CP-25 5785 |
|
Dm number |
-2511485 |
|
VIred |
0.31 |
|
SpType |
B1III |
|
R SpType |
|
|
Coord arcsec 2000 |
162111.32-253533.9 |
|
HIP |
80112 |
|
Sn |
15 |
|
So |
3 |
|
Nc |
2 |
|
RArad |
4.281243391 |
|
DErad |
-0.4466777959 |
|
Plx |
4.68 |
|
PmRA |
-10.6 |
|
PmDE |
-16.28 |
|
E RArad |
0.58 |
|
E DErad |
0.35 |
|
E Plx |
0.6 |
|
E pmRA |
0.78 |
|
E pmDE |
0.43 |
|
Hpmag |
2.9227 |
|
E Hpmag |
0.0026 |
|
SHp |
0.024 |
|
VA |
1 |
|
BV |
0.299 |
|
E BV |
0.003 |
|
VI |
0.31 |
|
Ccdm |
16212-2536 |
|
RComp |
|
|
Comp |
A |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
|
|
DRAs |
-0.69 |
|
DDEs |
25.9 |
|
R dRAs |
82 |
|
Year |
|
|
Theta |
|
|
Rho |
|
|
Obs |
3 |
|
Vmag |
3.1 |
|
Sp |
B1 |
|
PmNote |
* |
|
PmRA |
-10 |
|
PmDE |
-18 |
|
Dm number |
-2511485 |
|
Cat1 |
CD |
|
Name2 |
184336 |
|
Cat2 |
SAO |
|
HD |
147165 |
|
M HD |
|
|
ADS BDS |
A10009 |
|
M ADS BDS |
|
|
N IDS |
|
|
IDS |
16151S2521A |
|
HIC |
80112 |
|
16212-2536 Aa2
Coord arcsec 2000 |
162111.32-253533.9 |
|
Mag |
4.1 |
|
Spectral class |
B7 (blue-white) |
|
Calc delta mag |
0.8 |
|
Calc coord |
yes |
|
16212-2536 Ab
Coord arcsec 2000 |
162111.30-253534.2 |
|
Mag |
5.24 |
|
Calc delta mag |
1.94 |
|
Calc coord |
yes |
|
16212-2536 B
Coord arcsec 2000 |
162109.95-253534.3 |
|
Mag |
8.42 |
|
Spectral class |
B8V (blue-white) |
|
Calc delta mag |
5.12 |
|
Calc coord |
yes |
|
Ccdm |
16212-2536 |
|
RComp |
|
|
Comp |
B |
|
Note1 |
|
|
Note2 |
|
|
Discov num |
H 121 |
|
DRAs |
|
|
DDEs |
|
|
R dRAs |
|
|
Year |
1959 |
|
Theta |
273 |
|
Rho |
20.0 |
|
Obs |
23 |
|
Vmag |
8.7 |
|
Sp |
|
|
PmNote |
|
|
PmRA |
|
|
PmDE |
|
|
Dm number |
|
|
Cat1 |
|
|
Name2 |
|
|
Cat2 |
|
|
HD |
|
|
M HD |
|
|
ADS BDS |
A10009 |
|
M ADS BDS |
N |
|
N IDS |
|
|
IDS |
16151S2521B |
|
HIC |
|
|