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 |
2021 |
|
Obs |
118 |
|
Pa first |
94 |
|
Pa last |
275 |
|
P.A. Now (θ) |
275° |
|
Sep first |
0.8 |
|
Sep last |
0.834 |
|
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 |
2021 |
118 |
275 |
0.8 |
3.44 |
3.54 |
0.10 |
Y |
<=== |
Show |
|
225938 |
15 35 08 -41 10 00 |
RIZ 15 AC |
1999 |
1 |
210 |
39.1 |
3.44 |
17.00 |
13.56 |
|
|
Show |
|
225938 |
15 35 08 -41 10 00 |
RIZ 15 AD |
1999 |
1 |
292 |
53.4 |
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) | 190y | |
Periastron (T) | 1885y | |
Semi-major axis (a) | 0.655a | |
Eccentricity (e) | 0.51 | |
Inclination (i) | 95° | |
Longitude of periastron (ω) | 311.5° | |
Node (Ω) | 94.6° | |
Notes | n | |
Reference | Hei1990c | |
Equinox | 2000 | |
Last observation | 1988 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
277.9 |
0.796 |
2001 |
277.9 |
0.800 |
2002 |
277.8 |
0.804 |
2003 |
277.7 |
0.807 |
2004 |
277.6 |
0.811 |
2005 |
277.5 |
0.814 |
2006 |
277.4 |
0.817 |
2007 |
277.3 |
0.819 |
2008 |
277.2 |
0.821 |
2009 |
277.1 |
0.823 |
2010 |
277.0 |
0.825 |
2011 |
276.9 |
0.826 |
2012 |
276.8 |
0.827 |
2013 |
276.8 |
0.827 |
2014 |
276.7 |
0.827 |
2015 |
276.6 |
0.827 |
2016 |
276.5 |
0.826 |
2017 |
276.4 |
0.826 |
2018 |
276.3 |
0.824 |
2019 |
276.2 |
0.823 |
2020 |
276.1 |
0.821 |
2021 |
276.0 |
0.818 |
2022 |
276.0 |
0.815 |
2023 |
275.9 |
0.812 |
2024 |
275.8 |
0.808 |
2025 |
275.7 |
0.804 |
2026 |
275.6 |
0.799 |
2027 |
275.5 |
0.794 |
2028 |
275.4 |
0.789 |
2029 |
275.3 |
0.783 |
2030 |
275.2 |
0.776 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|