16302+2129 BLA 4 Aa,Ab
16h 30m 13.19s +21° 29' 22.6" P.A. 107.00 sep 0.0 mag 2.80,6.50 Sp G7IIIa dist. 42.66 pc (139.16 l.y.)
| Coord 2000 |
16302+2129 |
|
Discov num |
BLA 4 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
16 30 13.19 +21 29 22.6 |
|
| Date first |
1975 |
|
Date last |
1984 |
|
Obs |
4 |
|
| Pa first |
78 |
|
Pa last |
106.5 |
|
P.A. Now (θ) |
106.5° |
|
| Sep first |
0.0 |
|
Sep last |
0.032 |
|
Sep. Now (ρ) |
0.032" |
|
| Mag pri |
2.80 |
|
Mag sec |
6.50 |
|
delta mag (ΔM) |
3.7 |
|
Spectral class |
G7IIIa (yellow) |
|
| Pri motion ra |
-098 |
|
Sec motion ra |
|
|
| Pri motion dec |
-015 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16302+2129 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
84411 |
16 30 13 +21 29 23 |
BLA 4 Aa,Ab |
1984 |
4 |
107 |
0.0 |
2.80 |
6.50 |
3.70 |
Y |
<=== |
| Show |
Kornephoros |
84411 |
16 30 13 +21 29 23 |
BUP 170 AB |
2020 |
10 |
276 |
245.8 |
2.86 |
10.70 |
7.84 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Kornephoros |
|
Var name |
NSV7778 Her |
|
Constellation |
Hercules |
|
SAO |
84411 |
|
| HIP |
80816 |
|
Tycho2 |
1518-01442-1 |
|
Gaia DR2 |
1297565458993725696 |
|
HD |
148856 |
|
| HR |
6148 |
|
GC |
22193 |
|
BD |
BD+21 2934 |
|
Bayer |
Beta Herculis |
|
| Bayer name |
Bet Her |
|
Flamsteed |
27 Herculis |
|
Flamsteed name |
27 Her |
|
FK5 |
618 |
|
| Distance |
42.66 |
|
Distance ly |
139.16 |
|
Bayer greek |
β Her |
|
| Meaning |
one who leads the club |
|
ORBITAL ELEMENTS SOLUTION #1
| Period (P) | 410.575d | |
Periastron (T) | 15500.374d (1901.314y) | |
Semi-major axis (a) | 0.0621a | ± 0.0002 |
| Eccentricity (e) | 0.5498 | |
Inclination (i) | 100.2° | ± 0.1 |
Longitude of periastron (ω) | 103.6° | ± 0.1 |
| Node (Ω) | 9.2° | ± 0.4 |
Notes | n | |
Reference | MkT1992e | |
| Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
15.6 |
0.061 |
| 2001-01-01 |
22.1 |
0.055 |
| 2002-01-01 |
32.5 |
0.039 |
| 2003-01-01 |
59.4 |
0.022 |
| 2004-01-01 |
131.3 |
0.019 |
| 2005-01-01 |
168.2 |
0.034 |
| 2006-01-01 |
182.2 |
0.045 |
| 2007-01-01 |
201.9 |
0.018 |
| 2008-01-01 |
7.7 |
0.045 |
| 2009-01-01 |
15.2 |
0.061 |
| 2010-01-01 |
21.7 |
0.055 |
| 2011-01-01 |
31.7 |
0.040 |
| 2012-01-01 |
56.8 |
0.023 |
| 2013-01-01 |
127.4 |
0.018 |
| 2014-01-01 |
167.1 |
0.033 |
| 2015-01-01 |
181.5 |
0.045 |
| 2016-01-01 |
198.7 |
0.022 |
| 2017-01-01 |
7.1 |
0.043 |
| 2018-01-01 |
14.9 |
0.061 |
| 2019-01-01 |
21.3 |
0.056 |
| 2020-01-01 |
30.9 |
0.041 |
| 2021-01-01 |
54.4 |
0.024 |
| 2022-01-01 |
123.3 |
0.018 |
| 2023-01-01 |
165.9 |
0.032 |
| 2024-01-01 |
180.9 |
0.044 |
| 2025-01-01 |
196.4 |
0.025 |
| 2026-01-01 |
6.4 |
0.041 |
| 2027-01-01 |
14.5 |
0.060 |
| 2028-01-01 |
20.9 |
0.056 |
| 2029-01-01 |
30.2 |
0.042 |
| 2030-01-01 |
52.2 |
0.025 |
|
|
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 |
|
ORBITAL ELEMENTS SOLUTION #2
| Period (P) | 410.575d | |
Periastron (T) | 48393.0625d (1991.372y) | ± 6.6295 |
Semi-major axis (a) | 11m | ± 0.74 |
| Eccentricity (e) | 0.5498 | |
Inclination (i) | 46.38° | ± 10.76 |
Longitude of periastron (ω) | 24.61° | |
| Node (Ω) | 17.81° | ± 7.16 |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
235.3 |
0.013 |
| 2001-01-01 |
221.8 |
0.015 |
| 2002-01-01 |
211.1 |
0.016 |
| 2003-01-01 |
200.6 |
0.016 |
| 2004-01-01 |
187.6 |
0.013 |
| 2005-01-01 |
162.5 |
0.008 |
| 2006-01-01 |
51.0 |
0.004 |
| 2007-01-01 |
311.7 |
0.006 |
| 2008-01-01 |
259.2 |
0.009 |
| 2009-01-01 |
236.2 |
0.013 |
| 2010-01-01 |
222.4 |
0.015 |
| 2011-01-01 |
211.7 |
0.016 |
| 2012-01-01 |
201.3 |
0.016 |
| 2013-01-01 |
188.5 |
0.013 |
| 2014-01-01 |
164.8 |
0.008 |
| 2015-01-01 |
59.5 |
0.004 |
| 2016-01-01 |
316.2 |
0.006 |
| 2017-01-01 |
261.1 |
0.009 |
| 2018-01-01 |
237.2 |
0.013 |
| 2019-01-01 |
223.1 |
0.015 |
| 2020-01-01 |
212.3 |
0.016 |
| 2021-01-01 |
201.9 |
0.016 |
| 2022-01-01 |
189.4 |
0.014 |
| 2023-01-01 |
167.0 |
0.009 |
| 2024-01-01 |
68.6 |
0.004 |
| 2025-01-01 |
320.9 |
0.006 |
| 2026-01-01 |
263.0 |
0.009 |
| 2027-01-01 |
238.2 |
0.013 |
| 2028-01-01 |
223.8 |
0.015 |
| 2029-01-01 |
212.8 |
0.016 |
| 2030-01-01 |
202.5 |
0.016 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
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|
|
|
|
|
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Measures: green=micrometric, blue=interferometric, purple=photographic |
|
