09001-1228 HU 225 AB (HD 77126)
09h 00m 05.14s -12° 27' 39.4" P.A. 268.00 sep 0.4 mag 9.18,8.60 Sp F7V dist. 101.01 pc (329.49 l.y.)
| Coord 2000 |
09001-1228 |
|
Discov num |
HU 225 |
|
Comp |
AB |
|
Coord arcsec 2000 |
09 00 05.14 -12 27 39.4 |
|
| Date first |
1900 |
|
Date last |
2018 |
|
Obs |
53 |
|
| Pa first |
280 |
|
Pa last |
267.7 |
|
P.A. Now (θ) |
276.6° |
|
| Sep first |
0.3 |
|
Sep last |
0.425 |
|
Sep. Now (ρ) |
0.385" |
|
| Mag pri |
9.18 |
|
Mag sec |
8.60 |
|
delta mag (ΔM) |
0.58 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
-063 |
|
Sec motion ra |
-063 |
|
| Pri motion dec |
+002 |
|
Sec motion dec |
+002 |
|
| Notes |
N
O
W
(See Notes, Orbital solution, ) |
|
This double is physical.
09001-1228 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 77126 |
154820 |
09 00 05 -12 27 39 |
HU 225 AB |
2018 |
53 |
268 |
0.4 |
9.18 |
8.60 |
0.58 |
Y |
<=== |
| Show |
|
154820 |
09 00 05 -12 27 39 |
WOR 36 AB,C |
1976 |
2 |
135 |
5.2 |
8.16 |
14.00 |
5.84 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 77126 |
|
Constellation |
Hydra |
|
SAO |
154820 |
|
HIP |
44190 |
|
| Tycho2 |
5452-02085-1 |
|
Gaia DR2 |
5735868629841501824 |
|
HD |
77126 |
|
ADS |
7131 |
|
| BD |
BD-11 2520 |
|
Distance |
101.01 |
|
Distance ly |
329.49 |
|
ORBITAL ELEMENTS
| Period (P) | 125.94y | |
Periastron (T) | 1944.21y | |
Semi-major axis (a) | 0.341a | |
| Eccentricity (e) | 0.331 | |
Inclination (i) | 46° | |
Longitude of periastron (ω) | 9.5° | |
| Node (Ω) | 68.4° | |
Notes | n | |
Reference | Doc2015f | |
| Equinox | 2000 | |
Last observation | 2011 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
247.4 |
0.450 |
| 2001 |
248.4 |
0.451 |
| 2002 |
249.5 |
0.452 |
| 2003 |
250.6 |
0.452 |
| 2004 |
251.6 |
0.452 |
| 2005 |
252.7 |
0.452 |
| 2006 |
253.8 |
0.452 |
| 2007 |
254.8 |
0.451 |
| 2008 |
255.9 |
0.450 |
| 2009 |
257.0 |
0.448 |
| 2010 |
258.1 |
0.447 |
| 2011 |
259.2 |
0.444 |
| 2012 |
260.3 |
0.442 |
| 2013 |
261.4 |
0.439 |
| 2014 |
262.5 |
0.436 |
| 2015 |
263.7 |
0.433 |
| 2016 |
264.9 |
0.430 |
| 2017 |
266.1 |
0.426 |
| 2018 |
267.3 |
0.422 |
| 2019 |
268.5 |
0.417 |
| 2020 |
269.8 |
0.412 |
| 2021 |
271.1 |
0.407 |
| 2022 |
272.4 |
0.402 |
| 2023 |
273.8 |
0.397 |
| 2024 |
275.2 |
0.391 |
| 2025 |
276.6 |
0.385 |
| 2026 |
278.1 |
0.379 |
| 2027 |
279.7 |
0.372 |
| 2028 |
281.3 |
0.366 |
| 2029 |
282.9 |
0.359 |
| 2030 |
284.6 |
0.352 |
| 2031 |
286.4 |
0.345 |
| 2032 |
288.3 |
0.337 |
| 2033 |
290.3 |
0.330 |
| 2034 |
292.3 |
0.323 |
| 2035 |
294.5 |
0.315 |
| 2036 |
296.7 |
0.307 |
| 2037 |
299.1 |
0.300 |
| 2038 |
301.6 |
0.292 |
| 2039 |
304.2 |
0.284 |
| 2040 |
307.0 |
0.277 |
| 2041 |
309.9 |
0.269 |
| 2042 |
313.0 |
0.262 |
| 2043 |
316.2 |
0.255 |
| 2044 |
319.7 |
0.249 |
| 2045 |
323.3 |
0.242 |
| 2046 |
327.1 |
0.236 |
| 2047 |
331.1 |
0.231 |
| 2048 |
335.2 |
0.226 |
| 2049 |
339.6 |
0.222 |
| 2050 |
344.1 |
0.218 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
