11272-1539 HU 462 (HD 99565)
11h 27m 10.78s -15° 38' 55.0" P.A. 35.00 sep 0.5 mag 8.42,8.53 Sp G8V dist. 35.95 pc (117.27 l.y.)
Coord 2000 |
11272-1539 |
|
Discov num |
HU 462 |
|
Comp |
|
|
Coord arcsec 2000 |
11 27 10.78 -15 38 55.0 |
|
Date first |
1902 |
|
Date last |
2021 |
|
Obs |
103 |
|
Pa first |
220 |
|
Pa last |
35.1 |
|
P.A. Now (θ) |
21.1° |
|
Sep first |
0.6 |
|
Sep last |
0.462 |
|
Sep. Now (ρ) |
0.475" |
|
Mag pri |
8.42 |
|
Mag sec |
8.53 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
G8V (yellow) |
|
Pri motion ra |
+002 |
|
Sec motion ra |
+002 |
|
Pri motion dec |
-197 |
|
Sec motion dec |
-197 |
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 99565 |
|
Constellation |
Crater |
|
SAO |
156686 |
|
HIP |
55875 |
|
Tycho2 |
6085-00695-1 |
|
HD |
99565 |
|
ADS |
8166 |
|
BD |
BD-14 3326 |
|
Distance |
35.95 |
|
Distance ly |
117.27 |
|
ORBITAL ELEMENTS
Period (P) | 48.45y | ± 0.74 |
Periastron (T) | 1959.8y | ± 1.3 |
Semi-major axis (a) | 0.465a | ± 0.006 |
Eccentricity (e) | 0.098 | ± 0.012 |
Inclination (i) | 164.3° | ± 3.9 |
Longitude of periastron (ω) | 15.1° | ± 6.4 |
Node (Ω) | 157° | ± 11 |
Notes | n | |
Reference | Msn2021c | |
Equinox | | |
Last observation | 2021 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
212.6 |
0.435 |
2001 |
204.4 |
0.432 |
2002 |
196.1 |
0.429 |
2003 |
187.7 |
0.427 |
2004 |
179.3 |
0.425 |
2005 |
170.7 |
0.423 |
2006 |
162.1 |
0.422 |
2007 |
153.4 |
0.420 |
2008 |
144.6 |
0.419 |
2009 |
135.8 |
0.418 |
2010 |
127.0 |
0.417 |
2011 |
118.1 |
0.416 |
2012 |
109.2 |
0.417 |
2013 |
100.4 |
0.418 |
2014 |
91.7 |
0.420 |
2015 |
83.0 |
0.424 |
2016 |
74.5 |
0.428 |
2017 |
66.2 |
0.433 |
2018 |
58.1 |
0.439 |
2019 |
50.2 |
0.446 |
2020 |
42.6 |
0.453 |
2021 |
35.2 |
0.460 |
2022 |
28.0 |
0.468 |
2023 |
21.1 |
0.475 |
2024 |
14.4 |
0.482 |
2025 |
7.8 |
0.489 |
2026 |
1.5 |
0.494 |
2027 |
355.2 |
0.499 |
2028 |
349.1 |
0.503 |
2029 |
343.1 |
0.507 |
2030 |
337.1 |
0.509 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|