10361-2641 BU 411 (NSV4907)
10h 36m 04.49s -26° 40' 31.6" P.A. 303.00 sep 1.3 mag 6.68,7.77 Sp F6V dist. 41.25 pc (134.56 l.y.)
Coord 2000 |
10361-2641 |
|
Discov num |
BU 411 |
|
Comp |
|
|
Coord arcsec 2000 |
10 36 04.49 -26 40 31.6 |
|
Date first |
1876 |
|
Date last |
2021 |
|
Obs |
114 |
|
Pa first |
310 |
|
Pa last |
302.6 |
|
P.A. Now (θ) |
301.9° |
|
Sep first |
1.3 |
|
Sep last |
1.321 |
|
Sep. Now (ρ) |
1.319" |
|
Mag pri |
6.68 |
|
Mag sec |
7.77 |
|
delta mag (ΔM) |
1.09 |
|
Spectral class |
F6V (yellow-white) |
|
Pri motion ra |
-008 |
|
Sec motion ra |
-008 |
|
Pri motion dec |
-086 |
|
Sec motion dec |
-086 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
NSV4907 |
|
Constellation |
Hydra |
|
SAO |
179014 |
|
HIP |
51885 |
|
Tycho2 |
6628-01612-1 |
|
Gaia DR2 |
5468409368370405888 |
|
HD |
91881 |
|
HR |
4157 |
|
GC |
14571 |
|
ADS |
7846 |
|
CD |
CD-26 8022 |
|
CP |
CP-26 4360 |
|
Distance |
41.25 |
|
Distance ly |
134.56 |
|
ORBITAL ELEMENTS
Period (P) | 159.2877y | ± 2.2479 |
Periastron (T) | 1948.3135y | ± 0.1278 |
Semi-major axis (a) | 0.86653a | ± 0.0074 |
Eccentricity (e) | 0.75879 | ± 0.00591 |
Inclination (i) | 128.49° | ± 0.789 |
Longitude of periastron (ω) | 41.725° | ± 1.472 |
Node (Ω) | 148.934° | ± 1.004 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
310.9 |
1.297 |
2001 |
310.5 |
1.302 |
2002 |
310.1 |
1.307 |
2003 |
309.7 |
1.311 |
2004 |
309.3 |
1.315 |
2005 |
308.9 |
1.318 |
2006 |
308.5 |
1.321 |
2007 |
308.1 |
1.324 |
2008 |
307.7 |
1.327 |
2009 |
307.3 |
1.329 |
2010 |
306.9 |
1.330 |
2011 |
306.6 |
1.331 |
2012 |
306.2 |
1.332 |
2013 |
305.8 |
1.333 |
2014 |
305.4 |
1.333 |
2015 |
305.0 |
1.333 |
2016 |
304.6 |
1.332 |
2017 |
304.2 |
1.331 |
2018 |
303.8 |
1.330 |
2019 |
303.5 |
1.329 |
2020 |
303.1 |
1.327 |
2021 |
302.7 |
1.325 |
2022 |
302.3 |
1.322 |
2023 |
301.9 |
1.319 |
2024 |
301.5 |
1.316 |
2025 |
301.1 |
1.313 |
2026 |
300.7 |
1.309 |
2027 |
300.3 |
1.305 |
2028 |
299.9 |
1.301 |
2029 |
299.5 |
1.296 |
2030 |
299.1 |
1.291 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|