12268-0011 AGC 4 (HD 108318)
12h 26m 45.88s -00° 10' 59.9" P.A. 145.00 sep 0.5 mag 7.95,10.04 Sp F1V dist. 136.43 pc (445.03 l.y.)
| Coord 2000 |
12268-0011 |
|
Discov num |
AGC 4 |
|
Comp |
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Coord arcsec 2000 |
12 26 45.88 -00 10 59.9 |
|
| Date first |
1876 |
|
Date last |
2016 |
|
Obs |
25 |
|
| Pa first |
234 |
|
Pa last |
144.7 |
|
P.A. Now (θ) |
144.7° |
|
| Sep first |
0.9 |
|
Sep last |
0.53 |
|
Sep. Now (ρ) |
0.53" |
|
| Mag pri |
7.95 |
|
Mag sec |
10.04 |
|
delta mag (ΔM) |
2.09 |
|
Spectral class |
F1V (yellow-white) |
|
| Pri motion ra |
-040 |
|
Sec motion ra |
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|
| Pri motion dec |
-003 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 108318 |
|
Constellation |
Virgo |
|
SAO |
119399 |
|
HIP |
60726 |
|
| Tycho2 |
4941-00154-1 |
|
HD |
108318 |
|
ADS |
8550 |
|
BD |
BD+00 2944 |
|
| Distance |
136.43 |
|
Distance ly |
445.03 |
|
ORBITAL ELEMENTS
| Period (P) | 1137.488y | ± 621.0583 |
Periastron (T) | 1838.7749y | ± 107.8439 |
Semi-major axis (a) | 3.45104a | ± 2.21591 |
| Eccentricity (e) | 0.87741 | ± 0.11259 |
Inclination (i) | 98.42° | ± 8.966 |
Longitude of periastron (ω) | 112.884° | ± 34.557 |
| Node (Ω) | 66.554° | ± 14.666 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
164.2 |
0.591 |
| 2001 |
163.5 |
0.592 |
| 2002 |
162.7 |
0.593 |
| 2003 |
162.0 |
0.595 |
| 2004 |
161.2 |
0.596 |
| 2005 |
160.5 |
0.597 |
| 2006 |
159.7 |
0.599 |
| 2007 |
159.0 |
0.601 |
| 2008 |
158.3 |
0.602 |
| 2009 |
157.5 |
0.604 |
| 2010 |
156.8 |
0.606 |
| 2011 |
156.1 |
0.608 |
| 2012 |
155.4 |
0.610 |
| 2013 |
154.7 |
0.612 |
| 2014 |
154.0 |
0.615 |
| 2015 |
153.3 |
0.617 |
| 2016 |
152.6 |
0.619 |
| 2017 |
151.9 |
0.622 |
| 2018 |
151.2 |
0.624 |
| 2019 |
150.5 |
0.627 |
| 2020 |
149.9 |
0.630 |
| 2021 |
149.2 |
0.633 |
| 2022 |
148.5 |
0.635 |
| 2023 |
147.9 |
0.638 |
| 2024 |
147.2 |
0.641 |
| 2025 |
146.6 |
0.645 |
| 2026 |
146.0 |
0.648 |
| 2027 |
145.3 |
0.651 |
| 2028 |
144.7 |
0.654 |
| 2029 |
144.1 |
0.658 |
| 2030 |
143.5 |
0.661 |
|
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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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