00106-7313 I 43 AB (HD 661)
00h 10m 38.56s -73° 13' 27.7" P.A. 196.00 sep 0.5 mag 6.97,8.55 Sp F2V+F6V dist. 70.42 pc (229.71 l.y.)
| Coord 2000 |
00106-7313 |
|
Discov num |
I 43 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 10 38.56 -73 13 27.7 |
|
| Date first |
1896 |
|
Date last |
2017 |
|
Obs |
13 |
|
| Pa first |
340 |
|
Pa last |
196 |
|
P.A. Now (θ) |
196° |
|
| Sep first |
0.8 |
|
Sep last |
0.496 |
|
Sep. Now (ρ) |
0.496" |
|
| Mag pri |
6.97 |
|
Mag sec |
8.55 |
|
delta mag (ΔM) |
1.58 |
|
Spectral class |
F2V+F6V (yellow-white/yellow-white) |
|
| Pri motion ra |
+123 |
|
Sec motion ra |
|
|
| Pri motion dec |
+020 |
|
Sec motion dec |
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|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00106-7313 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 661 |
255642 |
00 10 39 -73 13 28 |
I 43 AB |
2017 |
13 |
196 |
0.5 |
6.97 |
8.55 |
1.58 |
Y |
<=== |
| Show |
|
255642 |
00 10 39 -73 13 28 |
I 43 AB,C |
2015 |
4 |
334 |
30.4 |
6.70 |
14.20 |
7.50 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 661 |
|
Constellation |
Tucana |
|
SAO |
255642 |
|
HIP |
865 |
|
| Tycho2 |
9140-00836-1 |
|
Gaia DR2 |
4689416169048411008 |
|
HD |
661 |
|
HR |
32 |
|
| GC |
184 |
|
CP |
CP-73 4 |
|
Distance |
70.42 |
|
Distance ly |
229.71 |
|
ORBITAL ELEMENTS
| Period (P) | 1637.7y | ± 84 |
Periastron (T) | 2187.8y | ± 86.3 |
Semi-major axis (a) | 2.762a | ± 0.177 |
| Eccentricity (e) | 0.487 | ± 0.036 |
Inclination (i) | 95.6° | ± 1.8 |
Longitude of periastron (ω) | 13.9° | ± 2.6 |
| Node (Ω) | 172.8° | ± 5.3 |
Notes | n | |
Reference | Cve2010e | |
| Equinox | 2000 | |
Last observation | 1996 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
210.8 |
0.351 |
| 2001 |
209.7 |
0.359 |
| 2002 |
208.6 |
0.368 |
| 2003 |
207.6 |
0.376 |
| 2004 |
206.6 |
0.384 |
| 2005 |
205.6 |
0.393 |
| 2006 |
204.7 |
0.401 |
| 2007 |
203.9 |
0.410 |
| 2008 |
203.0 |
0.418 |
| 2009 |
202.2 |
0.427 |
| 2010 |
201.5 |
0.436 |
| 2011 |
200.7 |
0.445 |
| 2012 |
200.0 |
0.454 |
| 2013 |
199.3 |
0.463 |
| 2014 |
198.7 |
0.472 |
| 2015 |
198.0 |
0.481 |
| 2016 |
197.4 |
0.490 |
| 2017 |
196.9 |
0.499 |
| 2018 |
196.3 |
0.509 |
| 2019 |
195.8 |
0.518 |
| 2020 |
195.2 |
0.527 |
| 2021 |
194.7 |
0.536 |
| 2022 |
194.2 |
0.546 |
| 2023 |
193.8 |
0.555 |
| 2024 |
193.3 |
0.564 |
| 2025 |
192.9 |
0.574 |
| 2026 |
192.4 |
0.583 |
| 2027 |
192.0 |
0.593 |
| 2028 |
191.6 |
0.602 |
| 2029 |
191.2 |
0.611 |
| 2030 |
190.9 |
0.621 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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