02366+1227 MCA 7 (31 Ari)
02h 36m 37.91s +12° 26' 51.4" P.A. 148.00 sep 0.1 mag 5.68,5.78 Sp F7V dist. 34.73 pc (113.29 l.y.)
Coord 2000 |
02366+1227 |
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Discov num |
MCA 7 |
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Comp |
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Coord arcsec 2000 |
02 36 37.91 +12 26 51.4 |
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Date first |
1979 |
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Date last |
2021 |
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Obs |
58 |
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Pa first |
153 |
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Pa last |
148.3 |
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P.A. Now (θ) |
349.4° |
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Sep first |
0.1 |
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Sep last |
0.072 |
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Sep. Now (ρ) |
0.055" |
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Mag pri |
5.68 |
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Mag sec |
5.78 |
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delta mag (ΔM) |
0.1 |
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Spectral class |
F7V (yellow-white) |
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Pri motion ra |
+284 |
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Sec motion ra |
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Pri motion dec |
-088 |
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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 |
31 Ari |
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Constellation |
Aries |
|
SAO |
93022 |
|
HIP |
12153 |
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Tycho2 |
0642-00047-1 |
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Gaia DR2 |
26484834227184896 |
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HD |
16234 |
|
HR |
763 |
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GC |
3133 |
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BD |
BD+11 360 |
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Flamsteed |
31 Arietis |
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Flamsteed name |
31 Ari |
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FK5 |
2179 |
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Distance |
34.73 |
|
Distance ly |
113.29 |
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ORBITAL ELEMENTS
Period (P) | 3.8y | ± 0.1 |
Periastron (T) | 2010.28y | ± 0.15 |
Semi-major axis (a) | 0.077a | ± 0.001 |
Eccentricity (e) | 0.017 | ± 0.002 |
Inclination (i) | 112.7° | ± 0.5 |
Longitude of periastron (ω) | 3.7° | ± 15 |
Node (Ω) | 145° | ± 0.5 |
Notes | n | |
Reference | Doc2016d | |
Equinox | 2000 | |
Last observation | 2010 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
9.2 |
0.040 |
2001 |
315.3 |
0.073 |
2002 |
181.5 |
0.044 |
2003 |
129.9 |
0.064 |
2004 |
349.4 |
0.055 |
2005 |
305.7 |
0.061 |
2006 |
164.9 |
0.059 |
2007 |
116.6 |
0.050 |
2008 |
338.1 |
0.069 |
2009 |
290.4 |
0.046 |
2010 |
154.6 |
0.070 |
2011 |
92.1 |
0.036 |
2012 |
330.0 |
0.077 |
2013 |
260.7 |
0.033 |
2014 |
146.6 |
0.076 |
2015 |
47.8 |
0.030 |
2016 |
322.9 |
0.078 |
2017 |
214.1 |
0.031 |
2018 |
138.9 |
0.073 |
2019 |
9.2 |
0.040 |
2020 |
315.3 |
0.073 |
2021 |
181.5 |
0.044 |
2022 |
129.9 |
0.064 |
2023 |
349.4 |
0.055 |
2024 |
305.7 |
0.061 |
2025 |
164.9 |
0.059 |
2026 |
116.6 |
0.050 |
2027 |
338.1 |
0.069 |
2028 |
290.4 |
0.046 |
2029 |
154.6 |
0.070 |
2030 |
92.1 |
0.036 |
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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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