15351-4110 HJ 4786 AB (Gam Lup)
15h 35m 08.41s -41° 10' 00.4" P.A. 275.00 sep 0.8 mag 3.44,3.54 Sp B2IV dist. 129.03 pc (420.9 l.y.)
| Coord 2000 |
15351-4110 |
|
Discov num |
HJ 4786 |
|
Comp |
AB |
|
Coord arcsec 2000 |
15 35 08.41 -41 10 00.4 |
|
| Date first |
1835 |
|
Date last |
2023 |
|
Obs |
127 |
|
| Pa first |
94 |
|
Pa last |
275 |
|
P.A. Now (θ) |
275° |
|
| Sep first |
0.8 |
|
Sep last |
0.836 |
|
Sep. Now (ρ) |
0.834" |
|
| Mag pri |
3.44 |
|
Mag sec |
3.54 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
B2IV (blue-white) |
|
| Pri motion ra |
-028 |
|
Sec motion ra |
-028 |
|
| Pri motion dec |
-042 |
|
Sec motion dec |
-042 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
15351-4110 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Gam Lup |
225938 |
15 35 08 -41 10 00 |
HJ 4786 AB |
2023 |
127 |
275 |
0.8 |
3.44 |
3.54 |
0.10 |
Y |
<=== |
| Show |
|
225938 |
15 35 08 -41 10 00 |
RIZ 15 AC |
2016 |
2 |
210 |
38.9 |
3.44 |
17.00 |
13.56 |
|
|
| Show |
|
225938 |
15 35 08 -41 10 00 |
RIZ 15 AD |
2016 |
3 |
293 |
53.8 |
3.44 |
16.40 |
12.96 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Gam Lup |
|
Constellation |
Lupus |
|
SAO |
225938 |
|
HIP |
76297 |
|
| Tycho2 |
7840-01432-1 |
|
HD |
138690 |
|
HR |
5776 |
|
GC |
20926 |
|
| CD |
CD-40 9760 |
|
CP |
CP-40 7042 |
|
Bayer |
Gamma Lupi |
|
Bayer name |
Gam Lup |
|
| Distance |
129.03 |
|
Distance ly |
420.9 |
|
Bayer greek |
γ Lup |
|
ORBITAL ELEMENTS
| Period (P) | 201.4y | ± 13.5 |
Periastron (T) | 2092.03y | ± 7 |
Semi-major axis (a) | 0.642a | ± 0.01 |
| Eccentricity (e) | 0.63 | ± 0.015 |
Inclination (i) | 96.6° | ± 1.5 |
Longitude of periastron (ω) | 131.4° | ± 4 |
| Node (Ω) | 91° | ± 1.5 |
Notes | n | |
Reference | Doc2023c | |
| Equinox | 2000 | |
Last observation | 2023 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
97.3 |
0.753 |
| 2001 |
97.2 |
0.758 |
| 2002 |
97.1 |
0.764 |
| 2003 |
97.0 |
0.769 |
| 2004 |
96.9 |
0.774 |
| 2005 |
96.8 |
0.779 |
| 2006 |
96.7 |
0.783 |
| 2007 |
96.6 |
0.788 |
| 2008 |
96.5 |
0.792 |
| 2009 |
96.4 |
0.796 |
| 2010 |
96.3 |
0.800 |
| 2011 |
96.2 |
0.804 |
| 2012 |
96.1 |
0.807 |
| 2013 |
96.0 |
0.811 |
| 2014 |
95.9 |
0.814 |
| 2015 |
95.8 |
0.817 |
| 2016 |
95.7 |
0.819 |
| 2017 |
95.6 |
0.822 |
| 2018 |
95.5 |
0.824 |
| 2019 |
95.4 |
0.826 |
| 2020 |
95.3 |
0.828 |
| 2021 |
95.2 |
0.830 |
| 2022 |
95.1 |
0.831 |
| 2023 |
95.0 |
0.832 |
| 2024 |
94.9 |
0.833 |
| 2025 |
94.8 |
0.834 |
| 2026 |
94.7 |
0.835 |
| 2027 |
94.6 |
0.835 |
| 2028 |
94.5 |
0.835 |
| 2029 |
94.4 |
0.835 |
| 2030 |
94.3 |
0.834 |
| 2031 |
94.2 |
0.833 |
| 2032 |
94.1 |
0.832 |
| 2033 |
94.0 |
0.831 |
| 2034 |
93.9 |
0.829 |
| 2035 |
93.8 |
0.827 |
| 2036 |
93.7 |
0.825 |
| 2037 |
93.7 |
0.823 |
| 2038 |
93.6 |
0.820 |
| 2039 |
93.5 |
0.817 |
| 2040 |
93.4 |
0.814 |
| 2041 |
93.3 |
0.810 |
| 2042 |
93.2 |
0.806 |
| 2043 |
93.1 |
0.801 |
| 2044 |
93.0 |
0.797 |
| 2045 |
92.8 |
0.792 |
| 2046 |
92.7 |
0.786 |
| 2047 |
92.6 |
0.780 |
| 2048 |
92.5 |
0.774 |
| 2049 |
92.4 |
0.768 |
| 2050 |
92.3 |
0.761 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
