Coord 2000 | 16341+4226 | Discov num | LAB 4 | Comp | Coord arcsec 2000 | 16 34 06.19 +42 26 12.8 | |||||
Date first | 1972 | Date last | 2008 | Obs | 69 | ||||||
Pa first | 179 | Pa last | 14.9 | P.A. Now (θ) | 16.2° | ||||||
Sep first | 0.1 | Sep last | 0.113 | Sep. Now (ρ) | 0.113" | ||||||
Mag pri | 4.20 | Mag sec | 7.70 | delta mag (ΔM) | 3.5 | Spectral class | B9V (blue-white) | ||||
Pri motion ra | -011 | Sec motion ra | |||||||||
Pri motion dec | +046 | Sec motion dec | |||||||||
Notes | N O (See Notes, Orbital solution) |
Name | Sig Her | Var name | NSV7837 Her | Constellation | Hercules | SAO | 46161 | ||||
HIP | 81126 | Tycho2 | 3066-02213-1 | Gaia DR2 | 1357126587985344896 | HD | 149630 | ||||
HR | 6168 | GC | 22296 | BD | BD+42 2724 | Bayer | Sigma Herculis | ||||
Bayer name | Sig Her | Flamsteed | 35 Herculis | Flamsteed name | 35 Her | FK5 | 621 | ||||
Distance | 96.53 | Distance ly | 314.88 | Bayer greek | σ Her |
Period (P) | 2706.19d (7.41y) | ± 4.89 | Periastron (T) | 50665.4d (1997.593y) | ± 2.68 | Semi-major axis (a) | 76.21m | ± 0.27 |
Eccentricity (e) | 0.5135 | ± 0.0028 | Inclination (i) | 105.25° | ± 0.51 | Longitude of periastron (ω) | 184.97° | ± 0.4 |
Node (Ω) | 14.95° | ± 0.47 | Notes | n | Reference | NOI2016 | ||
Equinox | 2000 | Last observation | 2004 | Grade | 2 | (1=Definitive, 9=Indet.) |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st. |
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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discov_num | notes | refcode |
LAB 4 | sig Her = 35 Her. Double-lined spectrum. | |
1972.28, 1973.45: Two of the three observations yielded fringes in the | ||
Fourier transform which were quite different; this is difficult to | ||
reconcile with the 50-yr period estimated from Kepler's law. | Lab1974 | |
This object was misidentified as tau Her by McAlister (1978). The | McA1978c | |
observation on 1976.2963 which was reported there as yielding a | ||
negative result does indeed show duplicity, as was correctly reported | ||
by McAlister later that year. The negative result reported in the | McA1978b | |
earlier paper for 1976.2991 is spurious. | ||
1977.1781: This is a previously unpublished photographic measure. | ||
1977.3284: Theta incorrectly given as 5.7 deg by McAlister & Hendry | McA1982b | |
(1982); correct value published by McAlister et al. (1989) | McA1989 | |
1983.3098: Very poor atmospheric conditions. | Bag1984a | |
Measure of 1988.258 made by MAPPIT. | Naj1989 | |
Martin et al. (1998) derive component masses 3.036 +/- 0.714 and | ||
1.498 +/- 0.519 Msun. | Mig1998 | |
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic | ||
masses of 6.05 +/- 1.14, 6.07, and 2.57 Msun, respectively. | Mlk2012 |
refcode | metd | author | reference |
Bag1984a | S j | Balega, Y.Y. & Ryadchenko, V.P. | 1984SvAL...10...95B |
Bag1984a | SvAL 10, 95, 1984 | ||
Lab1974 | S j | Labeyrie, A., Bonneau, D., Stachnik, R.V., & Gezari, D.Y. | 1974ApJ...194L.147L |
Lab1974 | +orb | ApJ 194, L147, 1974 | |
Lab1974 | (data from Hale 5m, KPNO 3.8m, 2.1m. Aperture listed as mean value of 3.6m unless | ||
Lab1974 | specifically given in paper) | ||
McA1978b | Sc j | McAlister, H.A. | 1978ApJ...225..932M |
McA1978b | ApJ 225, 932, 1978 | ||
McA1978c | Sc j | McAlister, H.A. | 1978PASP...90..288M |
McA1978c | PASP 90, 288, 1978 | ||
McA1982b | Sc j | McAlister, H.A. & Hendry, E.M. | 1982ApJS...48..273M |
McA1982b | ApJS 48, 273, 1982 | ||
McA1989 | Sc j | McAlister, H.A., Hartkopf, W.I., Sowell, J.R., Dombrowski, E.G., & Franz, O.G. | 1989AJ.....97..510M |
McA1989 | AJ 97, 510, 1989 | ||
Mig1998 | orb - | Martin, Ch., Mignard, F., Hartkopf, W.I., & McAlister, H.A. | 1998A&AS..133..149M |
Mig1998 | A&AS 133, 149, 1998 | ||
Mlk2012 | not - | Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. | 2012A&A...546A..69M |
Mlk2012 | A&A 546, A69, 2012 | ||
Naj1989 | Sa j | Nakajima, T., Kulkarni, S.R., Gorham, P.W., Ghez, A.M., Neugebauer, G., Oke, J.B., | 1989AJ.....97.1510N |
Naj1989 | Prince, T.A., & Readhead, A.C.S. | ||
Naj1989 | AJ 97, 1510, 1989 | ||
NOI2016 | Kn j | Hutter, D.J., Zavala, R.T., Tycner, C., Benson, J.A., Hummel, C.A., Sanborn, J., | 2016ApJS..227....4H |
NOI2016 | Franz, O.G., & Johnston, K.J. | ||
NOI2016 | ApJS 227, 4, 2016 |
coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
16341+4226 | LAB 4 | 2008 | 48 | 15 | 0.1 | 4.20 | 7.70 | B9V | NOD | 163406.19+422612.8 |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
Click on the map to see the double of your interest. Pass over with the mouse cursor to display the catalog designation. |
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A | |
B | pa=11.1° sep=0.11" |
Componente originario normalizzato | AB | Name | Sig Her | Coord arcsec 2000 | 163406.19+422612.8 | Mag | 4.2 | ||||
Spectral class | B9V (blue-white) | PmRA | -11.00 | PmDE | 46.0 | SAO | 46161 | ||||
HIP | 81126 | Tycho2 | 3066-02213-1 | HD | 149630 | HR | 6168 | ||||
GC | 22296 | BD | BD+42 2724 | Bayer | Sigma Herculis | Bayer name | Sig Her | ||||
Flamsteed | 35 Herculis | Flamsteed name | 35 Her | FK5 | 621 |
Tycho2 | 3066-02213-1 | Pflag | RAmdeg | 248.52575146 | DEmdeg | 42.43702714 | |||||
PmRA | -10.8 | PmDE | 53.8 | E RAmdeg | 3 | E DEmdeg | 3 | ||||
E pmRA | 0.6 | E pmDE | 0.6 | EpRAm | 1991.07 | EpDEm | 1991.42 | ||||
Num | 19 | Q RAmdeg | 1.0 | Q DEmdeg | 1.7 | Q pmRA | 1.0 | ||||
Q pmDE | 1.8 | BTmag | 4.177 | E BTmag | 0.014 | VTmag | 4.193 | ||||
E VTmag | 0.009 | Prox | 999 | TYC | T | HIP | 81126 | ||||
CCDM | RAdeg | 248.52578611 | DEdeg | 42.43690389 | EpRA 1990 | 1.45 | |||||
EpDE 1990 | 1.76 | E RAdeg | 3.3 | E DEdeg | 3.2 | Posflg | |||||
Corr | 0.0 |
SAO | 46161 | DelFlag | RA1950 | PmRA1950 | -0.0013 | ||||||
DE1950 | PmDE1950 | 0.044 | Vmag | 4.3 | SpType | A0 | |||||
Double code | Source | 74 | CatNum | 621 | DM | BD+42 2724 | |||||
DMcomp | BDsup | HD | 149630 | M HD | 0 | ||||||
GC | 22296 | RA1950rad | 4.33054904 | DE1950rad | 0.7424489 | PmRA2000 | -0.0009 | ||||
PmDE2000 | 0.046 |
Catalog | H | HIP | 81126 | Proxy | RAhms | 16 34 06.19 | |||||
DEdms | +42 26 12.8 | Vmag | 4.2 | VarFlag | R Vmag | G | |||||
RAdeg | 248.526 | DEdeg | 42.4369 | AstroRef | Plx | 10.79 | |||||
CCDM | N CCDM | Nsys | Ncomp | 1 | |||||||
MultFlag | Source | Qual | M HIP | ||||||||
Theta | Rho | HD | 149630 | BD | BD+42 2724 | ||||||
CD | CP | Dm number | +42 2724 | VIred | 0.02 | ||||||
SpType | B9Vvar | R SpType | Coord arcsec 2000 | 163406.19+422612.8 |
HIP | 81126 | Sn | 1 | So | 0 | Nc | 1 | ||||
RArad | 4.3375932894 | DErad | 0.7406635595 | Plx | 10.36 | PmRA | -7.54 | ||||
PmDE | 59.42 | E RArad | 0.35 | E DErad | 0.44 | E Plx | 0.46 | ||||
E pmRA | 0.46 | E pmDE | 0.54 | Hpmag | 4.2022 | E Hpmag | 0.0005 | ||||
SHp | 0.004 | VA | 0 | BV | -0.013 | E BV | 0.01 | ||||
VI | 0.02 |
Ccdm | 16341+4226 | RComp | Comp | A | Note1 | ||||||
Note2 | Discov num | DRAs | 0.19 | DDEs | 13.3 | ||||||
R dRAs | 5 | Year | Theta | Rho | |||||||
Obs | 2 | Vmag | 4.2 | Sp | B9 | PmNote | * | ||||
PmRA | -11 | PmDE | 46 | Dm number | +42 2724 | Cat1 | BD | ||||
Name2 | +42 1419 | Cat2 | AGK2/3 | HD | 149630 | M HD | |||||
ADS BDS | M ADS BDS | N IDS | IDS | 16309N4239A | |||||||
HIC | 81126 |
Componente originario normalizzato | AB | Coord arcsec 2000 | 163406.19+422612.9 | Mag | 7.7 | Calc delta mag | 3.5 | ||||
Calc coord | yes |
Ccdm | 16341+4226 | RComp | Comp | B | Note1 | * | |||||
Note2 | Discov num | LAB | DRAs | DDEs | |||||||
R dRAs | Year | 1972 | Theta | 179 | Rho | 0.1 | |||||
Obs | 7 | Vmag | Sp | PmNote | |||||||
PmRA | PmDE | Dm number | Cat1 | ||||||||
Name2 | Cat2 | HD | M HD | ||||||||
ADS BDS | M ADS BDS | N IDS | IDS | 16309N4239B | |||||||
HIC | 81126 |