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 |
|
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 |
|
Date last |
2021 |
|
Obs |
22 |
|
| Pa first |
69 |
|
Pa last |
115.3 |
|
P.A. Now (θ) |
116.1° |
|
| Sep first |
0.3 |
|
Sep last |
0.323 |
|
Sep. Now (ρ) |
0.336" |
|
| Mag pri |
9.70 |
|
Mag sec |
9.80 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
G0 (yellow) |
|
| 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 |
|
Constellation |
Monoceros |
|
Tycho2 |
4831-00864-1 |
|
Gaia DR2 |
3085099270992620672 |
|
| HD |
61809 |
|
ADS |
6279 |
|
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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