00008+1659 BAG 18
00h 00m 48.09s +16° 59' 17.5" P.A. 334.00 sep 0.7 mag 8.79,12.60 Sp K0 dist. 31.59 pc (103.05 l.y.)
| Coord 2000 |
00008+1659 |
|
Discov num |
BAG 18 |
|
Comp |
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Coord arcsec 2000 |
00 00 48.09 +16 59 17.5 |
|
| Date first |
2001 |
|
Date last |
2019 |
|
Obs |
10 |
|
| Pa first |
37 |
|
Pa last |
333.9 |
|
P.A. Now (θ) |
333.9° |
|
| Sep first |
0.5 |
|
Sep last |
0.72 |
|
Sep. Now (ρ) |
0.72" |
|
| Mag pri |
8.79 |
|
Mag sec |
12.60 |
|
delta mag (ΔM) |
3.81 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
-100 |
|
Sec motion ra |
|
|
| Pri motion dec |
-316 |
|
Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
SAO |
108960 |
|
HIP |
68 |
|
Tycho2 |
1178-01142-1 |
|
| HD |
224808 |
|
GC |
33299 |
|
BD |
BD+16 5027 |
|
Distance |
31.59 |
|
| Distance ly |
103.05 |
|
ORBITAL ELEMENTS
| Period (P) | 66.62y | |
Periastron (T) | 1990.25y | |
Semi-major axis (a) | 0.531a | |
| Eccentricity (e) | 0.372 | |
Inclination (i) | 167.7° | |
Longitude of periastron (ω) | 358.9° | |
| Node (Ω) | 142.2° | |
Notes | | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
48.0 |
0.463 |
| 2001 |
41.8 |
0.482 |
| 2002 |
36.1 |
0.502 |
| 2003 |
30.8 |
0.521 |
| 2004 |
25.9 |
0.540 |
| 2005 |
21.3 |
0.558 |
| 2006 |
17.0 |
0.575 |
| 2007 |
13.0 |
0.592 |
| 2008 |
9.1 |
0.607 |
| 2009 |
5.5 |
0.622 |
| 2010 |
2.0 |
0.636 |
| 2011 |
358.6 |
0.649 |
| 2012 |
355.4 |
0.661 |
| 2013 |
352.3 |
0.672 |
| 2014 |
349.3 |
0.682 |
| 2015 |
346.4 |
0.692 |
| 2016 |
343.5 |
0.700 |
| 2017 |
340.7 |
0.707 |
| 2018 |
338.0 |
0.713 |
| 2019 |
335.3 |
0.718 |
| 2020 |
332.6 |
0.722 |
| 2021 |
330.0 |
0.725 |
| 2022 |
327.3 |
0.727 |
| 2023 |
324.7 |
0.728 |
| 2024 |
322.1 |
0.728 |
| 2025 |
319.5 |
0.728 |
| 2026 |
316.9 |
0.726 |
| 2027 |
314.3 |
0.723 |
| 2028 |
311.6 |
0.719 |
| 2029 |
308.9 |
0.714 |
| 2030 |
306.2 |
0.708 |
|
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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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