07411-0124 A 1968 (HD 61809)
07h 41m 03.10s -01° 24' 00.4" P.A. 115.00 sep 0.3 mag 9.70,9.80 Sp G0
Coord 2000 |
07411-0124 |
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Discov num |
A 1968 |
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Comp |
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Coord arcsec 2000 |
07 41 03.10 -01 24 00.4 |
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Date first |
1909 |
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Date last |
2021 |
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Obs |
22 |
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Pa first |
69 |
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Pa last |
115.3 |
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P.A. Now (θ) |
116.1° |
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Sep first |
0.3 |
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Sep last |
0.323 |
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Sep. Now (ρ) |
0.336" |
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Mag pri |
9.70 |
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Mag sec |
9.80 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
G0 (yellow) |
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Pri motion ra |
-028 |
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Sec motion ra |
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Pri motion dec |
-037 |
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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 61809 |
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Constellation |
Monoceros |
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Tycho2 |
4831-00864-1 |
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Gaia DR2 |
3085099270992620672 |
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HD |
61809 |
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ADS |
6279 |
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ORBITAL ELEMENTS
Period (P) | 146.2y | |
Periastron (T) | 1995.8y | |
Semi-major axis (a) | 0.416a | |
Eccentricity (e) | 0.611 | |
Inclination (i) | 115.6° | |
Longitude of periastron (ω) | 274° | |
Node (Ω) | 143.4° | |
Notes | | |
Reference | Tok2014a | |
Equinox | 2000 | |
Last observation | 2012 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
161.4 |
0.157 |
2001 |
156.2 |
0.179 |
2002 |
152.1 |
0.200 |
2003 |
148.8 |
0.218 |
2004 |
145.9 |
0.235 |
2005 |
143.5 |
0.250 |
2006 |
141.2 |
0.263 |
2007 |
139.2 |
0.274 |
2008 |
137.4 |
0.284 |
2009 |
135.6 |
0.293 |
2010 |
133.9 |
0.301 |
2011 |
132.4 |
0.307 |
2012 |
130.9 |
0.313 |
2013 |
129.4 |
0.318 |
2014 |
128.0 |
0.322 |
2015 |
126.6 |
0.326 |
2016 |
125.2 |
0.328 |
2017 |
123.9 |
0.331 |
2018 |
122.5 |
0.333 |
2019 |
121.2 |
0.334 |
2020 |
119.9 |
0.335 |
2021 |
118.6 |
0.336 |
2022 |
117.3 |
0.336 |
2023 |
116.1 |
0.336 |
2024 |
114.8 |
0.336 |
2025 |
113.5 |
0.336 |
2026 |
112.2 |
0.335 |
2027 |
110.9 |
0.334 |
2028 |
109.6 |
0.333 |
2029 |
108.2 |
0.332 |
2030 |
106.9 |
0.330 |
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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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