13327+2230 HDS 1898
13h 32m 41.78s +22° 30' 07.3" P.A. 204.00 sep 0.2 mag 10.33,10.84 dist. 46.06 pc (150.25 l.y.)
| Coord 2000 |
13327+2230 |
|
Discov num |
HDS1898 |
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Comp |
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Coord arcsec 2000 |
13 32 41.78 +22 30 07.3 |
|
| Date first |
1991 |
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Date last |
2021 |
|
Obs |
16 |
|
| Pa first |
201 |
|
Pa last |
203.7 |
|
P.A. Now (θ) |
203.7° |
|
| Sep first |
0.2 |
|
Sep last |
0.185 |
|
Sep. Now (ρ) |
0.185" |
|
| Mag pri |
10.33 |
|
Mag sec |
10.84 |
|
delta mag (ΔM) |
0.51 |
|
Spectral class |
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| Pri motion ra |
-133 |
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Sec motion ra |
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| Pri motion dec |
-072 |
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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
| Constellation |
Coma Berenices |
|
HIP |
66072 |
|
Tycho2 |
1997-00297-1 |
|
Gaia DR2 |
1442133405340867584 |
|
| BD |
BD+23 2581 |
|
Distance |
46.06 |
|
Distance ly |
150.25 |
|
ORBITAL ELEMENTS
| Period (P) | 30y | |
Periastron (T) | 2001.8y | |
Semi-major axis (a) | 0.3056a | |
| Eccentricity (e) | 0.82 | |
Inclination (i) | 74° | |
Longitude of periastron (ω) | 94.1° | |
| Node (Ω) | 251° | |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | 2019 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
241.1 |
0.167 |
| 2001 |
250.1 |
0.112 |
| 2002 |
54.8 |
0.044 |
| 2003 |
79.0 |
0.132 |
| 2004 |
87.1 |
0.160 |
| 2005 |
93.5 |
0.171 |
| 2006 |
99.4 |
0.173 |
| 2007 |
105.3 |
0.172 |
| 2008 |
111.4 |
0.169 |
| 2009 |
117.8 |
0.164 |
| 2010 |
124.5 |
0.160 |
| 2011 |
131.6 |
0.156 |
| 2012 |
139.0 |
0.153 |
| 2013 |
146.7 |
0.151 |
| 2014 |
154.5 |
0.151 |
| 2015 |
162.2 |
0.152 |
| 2016 |
169.8 |
0.155 |
| 2017 |
177.0 |
0.159 |
| 2018 |
183.8 |
0.164 |
| 2019 |
190.1 |
0.171 |
| 2020 |
195.9 |
0.178 |
| 2021 |
201.2 |
0.185 |
| 2022 |
206.2 |
0.192 |
| 2023 |
210.8 |
0.199 |
| 2024 |
215.2 |
0.205 |
| 2025 |
219.3 |
0.209 |
| 2026 |
223.3 |
0.211 |
| 2027 |
227.2 |
0.211 |
| 2028 |
231.3 |
0.205 |
| 2029 |
235.7 |
0.193 |
| 2030 |
241.1 |
0.167 |
|
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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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