21221+1948 STFB 11 AB (1 Peg)
21h 22m 05.13s +19° 48' 15.7" P.A. 313.00 sep 36.6 mag 4.20,9.30 Sp K1III+K0V dist. 47.78 pc (155.86 l.y.)
Coord 2000 |
21221+1948 |
|
Discov num |
STFB 11 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 22 05.13 +19 48 15.7 |
|
Date first |
1780 |
|
Date last |
2020 |
|
Obs |
85 |
|
Pa first |
308 |
|
Pa last |
312.8 |
|
P.A. Now (θ) |
312.8° |
|
Sep first |
37.1 |
|
Sep last |
36.64 |
|
Sep. Now (ρ) |
36.64" |
|
Mag pri |
4.20 |
|
Mag sec |
9.30 |
|
delta mag (ΔM) |
5.1 |
|
Spectral class |
K1III+K0V (yellow-orange/yellow-orange) |
|
Pri motion ra |
+105 |
|
Sec motion ra |
+119 |
|
Pri motion dec |
+063 |
|
Sec motion dec |
+056 |
|
Notes |
N
O
T
(See Notes, Orbital solution, Parallax indicates physical) |
|
rPM=0.119 (< 0.3, Physical double)
This double is physical.
21221+1948 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
1 Peg |
107073 |
21 22 05 +19 48 16 |
STFB 11 AB |
2020 |
85 |
313 |
36.6 |
4.20 |
9.30 |
5.10 |
Y |
<=== |
Show |
|
107073 |
21 22 05 +19 48 16 |
STFB 11 AC |
2017 |
8 |
13 |
64.3 |
4.20 |
12.90 |
8.70 |
|
|
Show |
|
107073 |
21 22 05 +19 48 16 |
TOK 9001 AD |
1993 |
3 |
151 |
5.3 |
4.20 |
9.60 |
5.40 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
1 Peg |
|
Constellation |
Pegasus |
|
SAO |
107073 |
|
HIP |
105502 |
|
Tycho2 |
1671-00986-1 |
|
Gaia DR2 |
1790202365372381056 |
|
HD |
203504 |
|
HR |
8173 |
|
GC |
29914 |
|
ADS |
14909 |
|
DM |
BD+19 4690 |
|
BD |
BD+19 4691 |
|
Flamsteed |
1 Pegasi |
|
Flamsteed name |
1 Peg |
|
FK5 |
804 |
|
Distance |
47.78 |
|
Distance ly |
155.86 |
|
SUSPECTED ORBITAL ELEMENTS
SUSPECTED ORBITAL ELEMENTS SOLUTION #1
Identifier | 21221+1948 |
coord_arcsec_2000 | 212205.13+194815.7 |
Period (P) | 13500y | |
Periastron (T) | 7315y | |
Semi-major axis (a) | 21.97a | |
Eccentricity (e) | 0.7 | |
Inclination (i) | 18° | |
Longitude of periastron (ω) | 351° | |
Node (Ω) | 131° | |
Notes | n | |
Reference | PkO2014c | |
Equinox | 2000 | |
Last observation | 2011 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
311.6 |
36.152 |
2001 |
311.6 |
36.150 |
2002 |
311.6 |
36.148 |
2003 |
311.7 |
36.147 |
2004 |
311.7 |
36.145 |
2005 |
311.7 |
36.143 |
2006 |
311.7 |
36.142 |
2007 |
311.7 |
36.140 |
2008 |
311.7 |
36.138 |
2009 |
311.7 |
36.137 |
2010 |
311.7 |
36.135 |
2011 |
311.7 |
36.133 |
2012 |
311.7 |
36.132 |
2013 |
311.7 |
36.130 |
2014 |
311.7 |
36.128 |
2015 |
311.7 |
36.126 |
2016 |
311.7 |
36.125 |
2017 |
311.7 |
36.123 |
2018 |
311.8 |
36.121 |
2019 |
311.8 |
36.120 |
2020 |
311.8 |
36.118 |
2021 |
311.8 |
36.116 |
2022 |
311.8 |
36.114 |
2023 |
311.8 |
36.113 |
2024 |
311.8 |
36.111 |
2025 |
311.8 |
36.109 |
2026 |
311.8 |
36.108 |
2027 |
311.8 |
36.106 |
2028 |
311.8 |
36.104 |
2029 |
311.8 |
36.102 |
2030 |
311.8 |
36.101 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
SUSPECTED ORBITAL ELEMENTS
SUSPECTED ORBITAL ELEMENTS SOLUTION #2
Identifier | 21221+1948 |
coord_arcsec_2000 | 212205.13+194815.7 |
Period (P) | 17500y | |
Periastron (T) | 8212y | |
Semi-major axis (a) | 26.06a | |
Eccentricity (e) | 0.7 | |
Inclination (i) | 30° | |
Longitude of periastron (ω) | 265° | |
Node (Ω) | 212° | |
Notes | n | |
Reference | PkO2014c | |
Equinox | 2000 | |
Last observation | 2011 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
311.7 |
36.190 |
2001 |
311.7 |
36.188 |
2002 |
311.7 |
36.187 |
2003 |
311.7 |
36.185 |
2004 |
311.8 |
36.183 |
2005 |
311.8 |
36.182 |
2006 |
311.8 |
36.180 |
2007 |
311.8 |
36.178 |
2008 |
311.8 |
36.177 |
2009 |
311.8 |
36.175 |
2010 |
311.8 |
36.173 |
2011 |
311.8 |
36.172 |
2012 |
311.8 |
36.170 |
2013 |
311.8 |
36.168 |
2014 |
311.8 |
36.167 |
2015 |
311.8 |
36.165 |
2016 |
311.8 |
36.163 |
2017 |
311.8 |
36.162 |
2018 |
311.8 |
36.160 |
2019 |
311.9 |
36.158 |
2020 |
311.9 |
36.156 |
2021 |
311.9 |
36.155 |
2022 |
311.9 |
36.153 |
2023 |
311.9 |
36.151 |
2024 |
311.9 |
36.150 |
2025 |
311.9 |
36.148 |
2026 |
311.9 |
36.146 |
2027 |
311.9 |
36.145 |
2028 |
311.9 |
36.143 |
2029 |
311.9 |
36.141 |
2030 |
311.9 |
36.139 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
SUSPECTED ORBITAL ELEMENTS
SUSPECTED ORBITAL ELEMENTS SOLUTION #3
Identifier | 21221+1948 |
coord_arcsec_2000 | 212205.13+194815.7 |
Period (P) | 17500y | |
Periastron (T) | 9717y | |
Semi-major axis (a) | 26.06a | |
Eccentricity (e) | 0.61 | |
Inclination (i) | 38° | |
Longitude of periastron (ω) | 47° | |
Node (Ω) | 85° | |
Notes | n | |
Reference | PkO2014c | |
Equinox | 2000 | |
Last observation | 2011 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
311.8 |
36.085 |
2001 |
311.8 |
36.083 |
2002 |
311.9 |
36.081 |
2003 |
311.9 |
36.080 |
2004 |
311.9 |
36.078 |
2005 |
311.9 |
36.076 |
2006 |
311.9 |
36.075 |
2007 |
311.9 |
36.073 |
2008 |
311.9 |
36.071 |
2009 |
311.9 |
36.069 |
2010 |
311.9 |
36.068 |
2011 |
311.9 |
36.066 |
2012 |
311.9 |
36.064 |
2013 |
311.9 |
36.063 |
2014 |
311.9 |
36.061 |
2015 |
311.9 |
36.059 |
2016 |
312.0 |
36.058 |
2017 |
312.0 |
36.056 |
2018 |
312.0 |
36.054 |
2019 |
312.0 |
36.053 |
2020 |
312.0 |
36.051 |
2021 |
312.0 |
36.049 |
2022 |
312.0 |
36.047 |
2023 |
312.0 |
36.046 |
2024 |
312.0 |
36.044 |
2025 |
312.0 |
36.042 |
2026 |
312.0 |
36.041 |
2027 |
312.0 |
36.039 |
2028 |
312.0 |
36.037 |
2029 |
312.0 |
36.036 |
2030 |
312.0 |
36.034 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|