21405+1625 CLO 2 Aa,Ab
21h 40m 29.32s +16° 25' 18.4" P.A. 37.00 sep 0.1 mag 13.37,14.15 Sp M8.5+L2
| Coord 2000 |
21405+1625 |
|
Discov num |
CLO 2 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
21 40 29.32 +16 25 18.4 |
|
| Date first |
2001 |
|
Date last |
2016 |
|
Obs |
31 |
|
| Pa first |
132 |
|
Pa last |
37.4 |
|
P.A. Now (θ) |
106.8° |
|
| Sep first |
0.2 |
|
Sep last |
0.119 |
|
Sep. Now (ρ) |
0.169" |
|
| Mag pri |
13.37 |
|
Mag sec |
14.15 |
|
delta mag (ΔM) |
0.78 |
|
Spectral class |
M8.5+L2 (red/very deep red) |
|
| Pri motion ra |
-008 |
|
Sec motion ra |
|
|
| Pri motion dec |
-102 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
21405+1625 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
21 40 29 +16 25 18 |
CLO 2 Aa,Ab |
2016 |
31 |
37 |
0.1 |
13.37 |
14.15 |
0.78 |
Y |
<=== |
| Show |
|
|
21 40 29 +16 25 18 |
ALP 26 AB |
2001 |
1 |
31 |
29.2 |
12.94 |
|
|
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
Gaia DR2 |
1773355403397635968 |
|
ORBITAL ELEMENTS
| Period (P) | 24.34y | ± 0.25 |
Periastron (T) | 64340d (2035.033y) | ± 90 |
Semi-major axis (a) | 142.5m | ± 1.4 |
| Eccentricity (e) | 0.193 | ± 0.007 |
Inclination (i) | 37.2° | ± 0.6 |
Longitude of periastron (ω) | 186.7° | ± 1.2 |
| Node (Ω) | 100.3° | ± 0.6 |
Notes | n | |
Reference | Dup2017 | |
| Equinox | | |
Last observation | 2016 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
118.0 |
0.164 |
| 2001 |
127.1 |
0.157 |
| 2002 |
137.2 |
0.148 |
| 2003 |
148.8 |
0.137 |
| 2004 |
162.4 |
0.126 |
| 2005 |
178.4 |
0.116 |
| 2006 |
196.9 |
0.110 |
| 2007 |
216.7 |
0.108 |
| 2008 |
236.6 |
0.110 |
| 2009 |
255.4 |
0.113 |
| 2010 |
273.4 |
0.115 |
| 2011 |
291.2 |
0.114 |
| 2012 |
309.8 |
0.110 |
| 2013 |
330.1 |
0.105 |
| 2014 |
351.7 |
0.104 |
| 2015 |
12.9 |
0.108 |
| 2016 |
31.8 |
0.116 |
| 2017 |
47.6 |
0.128 |
| 2018 |
60.8 |
0.140 |
| 2019 |
71.8 |
0.151 |
| 2020 |
81.5 |
0.160 |
| 2021 |
90.3 |
0.166 |
| 2022 |
98.6 |
0.169 |
| 2023 |
106.8 |
0.169 |
| 2024 |
115.1 |
0.166 |
| 2025 |
123.9 |
0.160 |
| 2026 |
133.6 |
0.151 |
| 2027 |
144.6 |
0.141 |
| 2028 |
157.5 |
0.130 |
| 2029 |
172.7 |
0.119 |
| 2030 |
190.4 |
0.112 |
|
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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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