02415-1506 HDS 351 (HD 16826)
02h 41m 30.12s -15° 06' 01.9" P.A. 20.00 sep 0.0 mag 7.77,8.65 Sp F7V dist. 78.62 pc (256.46 l.y.)
Coord 2000 |
02415-1506 |
|
Discov num |
HDS 351 |
|
Comp |
|
|
Coord arcsec 2000 |
02 41 30.12 -15 06 01.9 |
|
Date first |
1991 |
|
Date last |
2021 |
|
Obs |
22 |
|
Pa first |
5 |
|
Pa last |
19.5 |
|
P.A. Now (θ) |
19.5° |
|
Sep first |
0.1 |
|
Sep last |
0.024 |
|
Sep. Now (ρ) |
0.024" |
|
Mag pri |
7.77 |
|
Mag sec |
8.65 |
|
delta mag (ΔM) |
0.88 |
|
Spectral class |
F7V (yellow-white) |
|
Pri motion ra |
+091 |
|
Sec motion ra |
|
|
Pri motion dec |
-066 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 16826 |
|
Constellation |
Cetus |
|
SAO |
148549 |
|
HIP |
12554 |
|
Tycho2 |
5863-00755-1 |
|
Gaia DR2 |
5157838496488670080 |
|
HD |
16826 |
|
BD |
BD-15 477 |
|
Distance |
78.62 |
|
Distance ly |
256.46 |
|
ORBITAL ELEMENTS
Period (P) | 28.21y | ± 0.6 |
Periastron (T) | 1993.61y | ± 0.53 |
Semi-major axis (a) | 0.168a | ± 0.004 |
Eccentricity (e) | 0.674 | ± 0.029 |
Inclination (i) | 87.7° | ± 0.7 |
Longitude of periastron (ω) | 150.8° | ± 3.2 |
Node (Ω) | 204.2° | ± 0.6 |
Notes | | |
Reference | Tok2021c | |
Equinox | 2000 | |
Last observation | 2021 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
200.2 |
0.110 |
2001 |
201.0 |
0.135 |
2002 |
201.4 |
0.159 |
2003 |
201.8 |
0.180 |
2004 |
202.1 |
0.198 |
2005 |
202.4 |
0.214 |
2006 |
202.6 |
0.228 |
2007 |
202.8 |
0.239 |
2008 |
203.0 |
0.248 |
2009 |
203.1 |
0.254 |
2010 |
203.3 |
0.257 |
2011 |
203.5 |
0.257 |
2012 |
203.6 |
0.255 |
2013 |
203.8 |
0.249 |
2014 |
204.0 |
0.239 |
2015 |
204.2 |
0.225 |
2016 |
204.4 |
0.207 |
2017 |
204.7 |
0.183 |
2018 |
205.1 |
0.152 |
2019 |
205.7 |
0.114 |
2020 |
207.1 |
0.064 |
2021 |
276.0 |
0.003 |
2022 |
23.7 |
0.054 |
2023 |
26.9 |
0.053 |
2024 |
35.0 |
0.024 |
2025 |
174.2 |
0.012 |
2026 |
195.4 |
0.044 |
2027 |
198.7 |
0.075 |
2028 |
200.0 |
0.104 |
2029 |
200.8 |
0.130 |
2030 |
201.4 |
0.154 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|