03310+2937 A 983 (HD 21674)
03h 30m 59.31s +29° 36' 49.3" P.A. 145.00 sep 0.5 mag 9.64,10.24 Sp G0 dist. 172.71 pc (563.38 l.y.)
Coord 2000 |
03310+2937 |
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Discov num |
A 983 |
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Comp |
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Coord arcsec 2000 |
03 30 59.31 +29 36 49.3 |
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Date first |
1905 |
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Date last |
2016 |
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Obs |
47 |
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Pa first |
308 |
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Pa last |
144.5 |
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P.A. Now (θ) |
144.5° |
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Sep first |
0.5 |
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Sep last |
0.548 |
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Sep. Now (ρ) |
0.548" |
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Mag pri |
9.64 |
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Mag sec |
10.24 |
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delta mag (ΔM) |
0.6 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
-014 |
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Sec motion ra |
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Pri motion dec |
+009 |
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Sec motion dec |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 21674 |
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Constellation |
Taurus |
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SAO |
75961 |
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HIP |
16376 |
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Tycho2 |
1810-00747-1 |
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Gaia DR2 |
120620480016164480 |
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HD |
21674 |
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ADS |
2578 |
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BD |
BD+29 570 |
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Distance |
172.71 |
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Distance ly |
563.38 |
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ORBITAL ELEMENTS
Period (P) | 587y | |
Periastron (T) | 1964.83y | |
Semi-major axis (a) | 0.748a | |
Eccentricity (e) | 0.591 | |
Inclination (i) | 63.2° | |
Longitude of periastron (ω) | 245.3° | |
Node (Ω) | 150.8° | |
Notes | | |
Reference | Doc2010d | |
Equinox | 2000 | |
Last observation | 2007 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
133.3 |
0.378 |
2001 |
134.1 |
0.388 |
2002 |
134.9 |
0.397 |
2003 |
135.7 |
0.407 |
2004 |
136.5 |
0.416 |
2005 |
137.2 |
0.425 |
2006 |
137.8 |
0.434 |
2007 |
138.5 |
0.443 |
2008 |
139.1 |
0.452 |
2009 |
139.7 |
0.460 |
2010 |
140.3 |
0.469 |
2011 |
140.8 |
0.477 |
2012 |
141.4 |
0.485 |
2013 |
141.9 |
0.494 |
2014 |
142.4 |
0.501 |
2015 |
142.9 |
0.509 |
2016 |
143.4 |
0.517 |
2017 |
143.8 |
0.525 |
2018 |
144.3 |
0.532 |
2019 |
144.7 |
0.539 |
2020 |
145.1 |
0.546 |
2021 |
145.5 |
0.553 |
2022 |
145.9 |
0.560 |
2023 |
146.3 |
0.567 |
2024 |
146.7 |
0.574 |
2025 |
147.1 |
0.580 |
2026 |
147.5 |
0.587 |
2027 |
147.8 |
0.593 |
2028 |
148.2 |
0.599 |
2029 |
148.5 |
0.606 |
2030 |
148.9 |
0.612 |
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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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