12042+2407 A 682 (HD 104815)
12h 04m 12.06s +24° 07' 10.1" P.A. 179.00 sep 0.2 mag 8.82,10.76 Sp F2V dist. 206.19 pc (672.59 l.y.)
Coord 2000 |
12042+2407 |
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Discov num |
A 682 |
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Comp |
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Coord arcsec 2000 |
12 04 12.06 +24 07 10.1 |
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Date first |
1904 |
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Date last |
2014 |
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Obs |
35 |
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Pa first |
336 |
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Pa last |
178.6 |
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P.A. Now (θ) |
178.6° |
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Sep first |
0.4 |
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Sep last |
0.199 |
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Sep. Now (ρ) |
0.199" |
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Mag pri |
8.82 |
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Mag sec |
10.76 |
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delta mag (ΔM) |
1.94 |
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Spectral class |
F2V (yellow-white) |
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Pri motion ra |
-032 |
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Sec motion ra |
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Pri motion dec |
-006 |
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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 |
HD 104815 |
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Constellation |
Coma Berenices |
|
SAO |
82122 |
|
HIP |
58850 |
|
Tycho2 |
1986-00896-1 |
|
Gaia DR2 |
4002673094807913856 |
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HD |
104815 |
|
ADS |
8405 |
|
BD |
BD+24 2422 |
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Distance |
206.19 |
|
Distance ly |
672.59 |
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ORBITAL ELEMENTS
Period (P) | 380y | |
Periastron (T) | 1999.48y | |
Semi-major axis (a) | 0.389a | |
Eccentricity (e) | 0.27 | |
Inclination (i) | 116.5° | |
Longitude of periastron (ω) | 276.5° | |
Node (Ω) | 143.5° | |
Notes | n | |
Reference | FMR2015a | |
Equinox | 2000 | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
217.3 |
0.131 |
2001 |
213.8 |
0.133 |
2002 |
210.3 |
0.135 |
2003 |
207.0 |
0.138 |
2004 |
203.9 |
0.142 |
2005 |
200.9 |
0.145 |
2006 |
198.0 |
0.149 |
2007 |
195.3 |
0.153 |
2008 |
192.8 |
0.157 |
2009 |
190.3 |
0.162 |
2010 |
188.0 |
0.166 |
2011 |
185.9 |
0.171 |
2012 |
183.8 |
0.176 |
2013 |
181.9 |
0.181 |
2014 |
180.1 |
0.186 |
2015 |
178.3 |
0.191 |
2016 |
176.7 |
0.196 |
2017 |
175.1 |
0.201 |
2018 |
173.6 |
0.206 |
2019 |
172.2 |
0.212 |
2020 |
170.9 |
0.217 |
2021 |
169.6 |
0.222 |
2022 |
168.4 |
0.227 |
2023 |
167.2 |
0.232 |
2024 |
166.1 |
0.237 |
2025 |
165.0 |
0.242 |
2026 |
164.0 |
0.247 |
2027 |
163.0 |
0.252 |
2028 |
162.0 |
0.256 |
2029 |
161.1 |
0.261 |
2030 |
160.2 |
0.266 |
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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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