02422+4012 MCA 8 (12 Per)
02h 42m 14.93s +40° 11' 39.8" P.A. 49.00 sep 0.0 mag 5.50,5.90 Sp F9V dist. 24.19 pc (78.91 l.y.)
Coord 2000 |
02422+4012 |
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Discov num |
MCA 8 |
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Comp |
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Coord arcsec 2000 |
02 42 14.93 +40 11 39.8 |
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Date first |
1973 |
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Date last |
2016 |
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Obs |
63 |
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Pa first |
309 |
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Pa last |
49 |
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P.A. Now (θ) |
49° |
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Sep first |
0.1 |
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Sep last |
0.031 |
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Sep. Now (ρ) |
0.031" |
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Mag pri |
5.50 |
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Mag sec |
5.90 |
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delta mag (ΔM) |
0.4 |
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Spectral class |
F9V (yellow-white) |
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Pri motion ra |
-019 |
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Sec motion ra |
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Pri motion dec |
-186 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
12 Per |
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Var name |
NSV896 Per |
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Constellation |
Perseus |
|
SAO |
55793 |
|
HIP |
12623 |
|
Tycho2 |
2849-02054-1 |
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Gaia DR2 |
335144892337326336 |
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HD |
16739 |
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HR |
788 |
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GC |
3245 |
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GL |
Gl 105.6 |
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BD |
BD+39 610 |
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Flamsteed |
12 Persei |
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Flamsteed name |
12 Per |
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FK5 |
2187 |
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Distance |
24.19 |
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Distance ly |
78.91 |
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ORBITAL ELEMENTS
Period (P) | 330.98209d | |
Periastron (T) | 1993.33956y | |
Semi-major axis (a) | 53.18m | ± 0.15 |
Eccentricity (e) | 0.6574 | |
Inclination (i) | 128.17° | ± 0.14 |
Longitude of periastron (ω) | 269.29° | |
Node (Ω) | 49.29° | |
Notes | n | |
Reference | Bgn2006 | |
Equinox | | |
Last observation | 2004 | |
Grade | 8 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
344.5 |
0.054 |
2001-01-01 |
327.9 |
0.055 |
2002-01-01 |
311.3 |
0.054 |
2003-01-01 |
294.4 |
0.053 |
2004-01-01 |
276.5 |
0.051 |
2005-01-01 |
255.2 |
0.044 |
2006-01-01 |
208.8 |
0.020 |
2007-01-01 |
41.9 |
0.035 |
2008-01-01 |
14.6 |
0.049 |
2009-01-01 |
355.8 |
0.053 |
2010-01-01 |
338.8 |
0.054 |
2011-01-01 |
322.3 |
0.054 |
2012-01-01 |
305.7 |
0.054 |
2013-01-01 |
288.5 |
0.053 |
2014-01-01 |
269.9 |
0.049 |
2015-01-01 |
245.6 |
0.039 |
2016-01-01 |
118.6 |
0.012 |
2017-01-01 |
30.5 |
0.041 |
2018-01-01 |
7.8 |
0.051 |
2019-01-01 |
349.9 |
0.054 |
2020-01-01 |
333.2 |
0.054 |
2021-01-01 |
316.7 |
0.054 |
2022-01-01 |
299.9 |
0.054 |
2023-01-01 |
282.5 |
0.052 |
2024-01-01 |
262.8 |
0.047 |
2025-01-01 |
232.4 |
0.032 |
2026-01-01 |
59.6 |
0.025 |
2027-01-01 |
21.7 |
0.046 |
2028-01-01 |
1.5 |
0.052 |
2029-01-01 |
344.2 |
0.054 |
2030-01-01 |
327.6 |
0.055 |
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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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