02212+2136 HU 425 Aa,Ab
02h 21m 11.45s +21° 35' 21.4" P.A. 143.00 sep 0.7 mag 10.74,11.21 Sp G8V dist. 166.67 pc (543.68 l.y.)
Coord 2000 |
02212+2136 |
|
Discov num |
HU 425 |
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Comp |
Aa,Ab |
|
Coord arcsec 2000 |
02 21 11.45 +21 35 21.4 |
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Date first |
1901 |
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Date last |
2016 |
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Obs |
30 |
|
Pa first |
25 |
|
Pa last |
143.3 |
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P.A. Now (θ) |
143.3° |
|
Sep first |
0.4 |
|
Sep last |
0.665 |
|
Sep. Now (ρ) |
0.665" |
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Mag pri |
10.74 |
|
Mag sec |
11.21 |
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delta mag (ΔM) |
0.47 |
|
Spectral class |
G8V (yellow) |
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Pri motion ra |
+021 |
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Sec motion ra |
|
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Pri motion dec |
-019 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
02212+2136 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
|
02 21 11 +21 35 21 |
HU 425 Aa,Ab |
2016 |
30 |
143 |
0.7 |
10.74 |
11.21 |
0.47 |
Y |
<=== |
Show |
|
|
02 21 11 +21 35 21 |
FMR 24 AB |
2014 |
9 |
100 |
11.4 |
10.10 |
16.10 |
6.00 |
|
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Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Aries |
|
HIP |
10959 |
|
Tycho2 |
1221-00800-1 |
|
Gaia DR2 |
99756834562343808 |
|
ADS |
1796 |
|
BD |
BD+20 381 |
|
Distance |
166.67 |
|
Distance ly |
543.68 |
|
ORBITAL ELEMENTS
Period (P) | 125y | |
Periastron (T) | 1975y | |
Semi-major axis (a) | 0.355a | |
Eccentricity (e) | 0.06 | |
Inclination (i) | 134° | |
Longitude of periastron (ω) | 172° | |
Node (Ω) | 0° | |
Notes | | |
Reference | Hei1995 | |
Equinox | 2000 | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
116.8 |
0.257 |
2001 |
112.9 |
0.254 |
2002 |
109.0 |
0.251 |
2003 |
105.0 |
0.249 |
2004 |
100.9 |
0.248 |
2005 |
96.8 |
0.247 |
2006 |
92.7 |
0.247 |
2007 |
88.6 |
0.248 |
2008 |
84.5 |
0.249 |
2009 |
80.5 |
0.251 |
2010 |
76.5 |
0.254 |
2011 |
72.7 |
0.257 |
2012 |
68.9 |
0.260 |
2013 |
65.3 |
0.265 |
2014 |
61.7 |
0.269 |
2015 |
58.3 |
0.274 |
2016 |
55.0 |
0.279 |
2017 |
51.8 |
0.284 |
2018 |
48.8 |
0.290 |
2019 |
45.9 |
0.296 |
2020 |
43.0 |
0.302 |
2021 |
40.3 |
0.307 |
2022 |
37.7 |
0.313 |
2023 |
35.2 |
0.319 |
2024 |
32.8 |
0.325 |
2025 |
30.4 |
0.330 |
2026 |
28.1 |
0.335 |
2027 |
25.9 |
0.340 |
2028 |
23.8 |
0.345 |
2029 |
21.7 |
0.350 |
2030 |
19.7 |
0.354 |
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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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