13328+1649 VYS 6 (VW Com)
13h 32m 44.59s +16° 48' 39.0" P.A. 55.00 sep 2.6 mag 11.39,11.30 Sp M3.5V+M4 dist. 12.76 pc (41.62 l.y.)
| Coord 2000 |
13328+1649 |
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Discov num |
VYS 6 |
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Comp |
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Coord arcsec 2000 |
13 32 44.59 +16 48 39.0 |
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| Date first |
1943 |
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Date last |
2018 |
|
Obs |
68 |
|
| Pa first |
20 |
|
Pa last |
55.3 |
|
P.A. Now (θ) |
55.3° |
|
| Sep first |
2.9 |
|
Sep last |
2.63 |
|
Sep. Now (ρ) |
2.63" |
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| Mag pri |
11.39 |
|
Mag sec |
11.30 |
|
delta mag (ΔM) |
0.09 |
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Spectral class |
M3.5V+M4 (red/red) |
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| Pri motion ra |
+253 |
|
Sec motion ra |
+270 |
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| Pri motion dec |
-222 |
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Sec motion dec |
-226 |
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| Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.05 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
VW Com |
|
Constellation |
Coma Berenices |
|
HIP |
66077 |
|
GL |
Gl 516A |
|
| Distance |
12.76 |
|
Distance ly |
41.62 |
|
ORBITAL ELEMENTS
| Period (P) | 430y | |
Periastron (T) | 1973.5y | |
Semi-major axis (a) | 3.17a | |
| Eccentricity (e) | 0 | |
Inclination (i) | 59.4° | |
Longitude of periastron (ω) | 0° | |
| Node (Ω) | 33.3° | |
Notes | n | |
Reference | Hei1990d | |
| Equinox | 2000 | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
45.0 |
2.998 |
| 2001 |
45.5 |
2.985 |
| 2002 |
46.0 |
2.972 |
| 2003 |
46.5 |
2.958 |
| 2004 |
47.0 |
2.944 |
| 2005 |
47.5 |
2.929 |
| 2006 |
48.0 |
2.914 |
| 2007 |
48.5 |
2.899 |
| 2008 |
49.0 |
2.883 |
| 2009 |
49.5 |
2.867 |
| 2010 |
50.0 |
2.850 |
| 2011 |
50.6 |
2.833 |
| 2012 |
51.1 |
2.816 |
| 2013 |
51.6 |
2.799 |
| 2014 |
52.2 |
2.781 |
| 2015 |
52.7 |
2.762 |
| 2016 |
53.3 |
2.744 |
| 2017 |
53.9 |
2.725 |
| 2018 |
54.5 |
2.706 |
| 2019 |
55.1 |
2.686 |
| 2020 |
55.7 |
2.666 |
| 2021 |
56.3 |
2.646 |
| 2022 |
56.9 |
2.626 |
| 2023 |
57.5 |
2.605 |
| 2024 |
58.1 |
2.584 |
| 2025 |
58.8 |
2.563 |
| 2026 |
59.4 |
2.542 |
| 2027 |
60.1 |
2.521 |
| 2028 |
60.8 |
2.499 |
| 2029 |
61.5 |
2.477 |
| 2030 |
62.2 |
2.455 |
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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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