18070+3034 AC   15AB (99 Her)

 
 
18H 07M 01.61S +30 33' 42.7" P.A. 331.4 SEP 1.44 MAG 5.13,8.96 SP F7V DIST. 15.64 PC (51.02 L.Y.)
 
 
Coord 2000
18070+3034
Discov num
AC   15
Comp
AB
Coord arcsec 2000
18 07 01.61 +30 33 42.7
Date first
1859
Date last
2011
Obs
214
Pa first
347
Pa last
317
P.A. Now (θ)
331.4°
Sep first
1.7
Sep last
1.2
Sep. Now (ρ)
1.44"
Mag pri
5.13
Mag sec
8.96
delta mag (ΔM)
3.83
Spectral class
F7V (yellow-white)
Pri motion ra
-086
Sec motion ra
-069
Pri motion dec
+079
Sec motion dec
+048
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
18070+3034 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 66648 18070+3034 SCA 170 Aa,Ab 2000 2005 2 230 0.2 5.13
Show 99 Her 66648 18070+3034 AC 15 AB 1859 2011 214 331 1.4 5.13 8.96 3.83 Y <===
Show 66648 18070+3034 AC 15 AC 1900 2002 7 59 96.7 5.13 10.70 5.57
Show 66648 18070+3034 AC 15 AD 1900 2002 5 103 140.1 5.13 11.10 5.97
Show 66648 18070+3034 AC 15 AE 1900 2002 5 78 169.1 5.13 10.80 5.67
Show 66648 18070+3034 AC 15 AF 1982 2002 3 165 162.4 5.13 10.70 5.57
Show 66648 18070+3034 AC 15 AG 1900 2002 6 0 177.5 5.13 11.36 6.23
Octuple system
7 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
99 Her
Other name
b Her
Constellation
Hercules
SAO
66648
HIP
88745
Tycho2
2621-02683-1
HD
165908
HR
6775
GC
24700
ADS
11077
GL
Gl 704A
BD
BD+30 3128
Flamsteed
99 Herculis
Flamsteed name
99 Her
Distance
15.64
Distance ly
51.02
last precise pa
316.7
last precise sep
1.175
 
 
ORBITAL ELEMENTS
 
 
Period (P)55.91y± 0.12 Periastron (T)1997.8y± 0 Semi-major axis (a)1.05a± 0.02
Eccentricity (e)0.761± 0.007 Inclination (i)36.18°± 1.72 Longitude of periastron (ω)295.38°± 2.84
Node (Ω)223.62°± 3.21 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2011
label rho theta
2000 0.460 250.4
2001 0.557 264.9
2002 0.643 275.2
2003 0.722 283.2
2004 0.794 289.7
2005 0.862 295.1
2006 0.926 299.8
2007 0.985 303.9
2008 1.041 307.5
2009 1.094 310.8
2010 1.143 313.7
2011 1.190 316.5
2012 1.233 319.0
2013 1.273 321.4
2014 1.311 323.6
2015 1.346 325.7
2016 1.379 327.7
2017 1.409 329.6
2018 1.436 331.4
2019 1.461 333.2
2020 1.483 334.9
2021 1.503 336.6
2022 1.521 338.2
2023 1.536 339.8
2024 1.548 341.4
2025 1.558 342.9
2026 1.566 344.4
2027 1.571 345.9
2028 1.573 347.5
2029 1.573 349.0
2030 1.570 350.5

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic