07176+0918 STT 170 AB (HD 56515)
07h 17m 38.51s +09° 17' 31.5" P.A. 283.00 sep 0.6 mag 7.37,7.67 Sp G0IV-V dist. 41.61 pc (135.73 l.y.)
| Coord 2000 |
07176+0918 |
|
Discov num |
STT 170 |
|
Comp |
AB |
|
Coord arcsec 2000 |
07 17 38.51 +09 17 31.5 |
|
| Date first |
1843 |
|
Date last |
2020 |
|
Obs |
248 |
|
| Pa first |
135 |
|
Pa last |
282.7 |
|
P.A. Now (θ) |
280.6° |
|
| Sep first |
0.8 |
|
Sep last |
0.6 |
|
Sep. Now (ρ) |
0.656" |
|
| Mag pri |
7.37 |
|
Mag sec |
7.67 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
G0IV-V (yellow) |
|
| Pri motion ra |
-016 |
|
Sec motion ra |
-016 |
|
| Pri motion dec |
-114 |
|
Sec motion dec |
-114 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
07176+0918 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 56515 |
115211 |
07 17 39 +09 17 32 |
STT 170 AB |
2020 |
248 |
283 |
0.6 |
7.37 |
7.67 |
0.30 |
Y |
<=== |
| Show |
|
115211 |
07 17 39 +09 17 32 |
TOK 664 AC |
2015 |
4 |
77 |
19.9 |
6.72 |
14.65 |
7.93 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 56515 |
|
Constellation |
Canis Minor |
|
SAO |
115211 |
|
HIP |
35310 |
|
| Tycho2 |
0763-00243-1 |
|
HD |
56515 |
|
GC |
9690 |
|
ADS |
5958 |
|
| BD |
BD+09 1603 |
|
Distance |
41.61 |
|
Distance ly |
135.73 |
|
ORBITAL ELEMENTS
| Period (P) | 289.2y | ± 17.2 |
Periastron (T) | 2015.27y | ± 0.94 |
Semi-major axis (a) | 1.366a | ± 0.026 |
| Eccentricity (e) | 0.52 | ± 0.008 |
Inclination (i) | 109.5° | ± 0.7 |
Longitude of periastron (ω) | 124.7° | ± 6.1 |
| Node (Ω) | 93.3° | ± 0.75 |
Notes | n | |
Reference | Sca2018e | |
| Equinox | 2000 | |
Last observation | 2018 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
59.7 |
0.430 |
| 2001 |
55.8 |
0.393 |
| 2002 |
51.1 |
0.358 |
| 2003 |
45.4 |
0.324 |
| 2004 |
38.4 |
0.294 |
| 2005 |
29.9 |
0.267 |
| 2006 |
19.9 |
0.247 |
| 2007 |
8.4 |
0.235 |
| 2008 |
356.3 |
0.233 |
| 2009 |
344.3 |
0.240 |
| 2010 |
333.4 |
0.255 |
| 2011 |
324.1 |
0.278 |
| 2012 |
316.3 |
0.306 |
| 2013 |
309.8 |
0.337 |
| 2014 |
304.5 |
0.371 |
| 2015 |
300.1 |
0.405 |
| 2016 |
296.4 |
0.440 |
| 2017 |
293.2 |
0.474 |
| 2018 |
290.5 |
0.508 |
| 2019 |
288.0 |
0.541 |
| 2020 |
285.9 |
0.572 |
| 2021 |
284.0 |
0.601 |
| 2022 |
282.2 |
0.629 |
| 2023 |
280.6 |
0.656 |
| 2024 |
279.1 |
0.680 |
| 2025 |
277.8 |
0.703 |
| 2026 |
276.5 |
0.723 |
| 2027 |
275.2 |
0.742 |
| 2028 |
274.0 |
0.759 |
| 2029 |
272.9 |
0.774 |
| 2030 |
271.8 |
0.787 |
|
|
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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