10067+1754 HDS 1457 AB (HD 87646)
10h 06m 40.82s +17° 53' 42.6" P.A. 45.00 sep 0.4 mag 8.29,10.95 Sp G1IV dist. 98.81 pc (322.32 l.y.)
| Coord 2000 |
10067+1754 |
|
Discov num |
HDS1457 |
|
Comp |
AB |
|
Coord arcsec 2000 |
10 06 40.82 +17 53 42.6 |
|
| Date first |
1991 |
|
Date last |
2021 |
|
Obs |
27 |
|
| Pa first |
136 |
|
Pa last |
45.2 |
|
P.A. Now (θ) |
45.2° |
|
| Sep first |
0.2 |
|
Sep last |
0.435 |
|
Sep. Now (ρ) |
0.435" |
|
| Mag pri |
8.29 |
|
Mag sec |
10.95 |
|
delta mag (ΔM) |
2.66 |
|
Spectral class |
G1IV (yellow) |
|
| Pri motion ra |
-083 |
|
Sec motion ra |
|
|
| Pri motion dec |
-031 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
10067+1754 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
98950 |
10 06 41 +17 53 43 |
BAG 23 Aa,Ac |
2012 |
3 |
113 |
0.0 |
8.07 |
|
|
Y |
|
| Show |
HD 87646 |
98950 |
10 06 41 +17 53 43 |
HDS 1457 AB |
2021 |
27 |
45 |
0.4 |
8.29 |
10.95 |
2.66 |
Y |
<=== |
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 87646 |
|
Constellation |
Leo |
|
SAO |
98950 |
|
HIP |
49522 |
|
| Tycho2 |
1415-00386-1 |
|
Gaia DR2 |
623313901995781632 |
|
HD |
87646 |
|
BD |
BD+18 2317 |
|
| Distance |
98.81 |
|
Distance ly |
322.32 |
|
ORBITAL ELEMENTS
| Period (P) | 203y | |
Periastron (T) | 1989.2y | |
Semi-major axis (a) | 0.684a | |
| Eccentricity (e) | 0.649 | |
Inclination (i) | 126.2° | |
Longitude of periastron (ω) | 298.9° | |
| Node (Ω) | 109.1° | |
Notes | n | |
Reference | Tok2019c | |
| Equinox | | |
Last observation | 2018 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
94.4 |
0.354 |
| 2001 |
91.5 |
0.363 |
| 2002 |
88.8 |
0.371 |
| 2003 |
86.1 |
0.378 |
| 2004 |
83.6 |
0.385 |
| 2005 |
81.1 |
0.391 |
| 2006 |
78.7 |
0.396 |
| 2007 |
76.3 |
0.401 |
| 2008 |
74.0 |
0.406 |
| 2009 |
71.8 |
0.410 |
| 2010 |
69.6 |
0.415 |
| 2011 |
67.5 |
0.419 |
| 2012 |
65.4 |
0.422 |
| 2013 |
63.3 |
0.426 |
| 2014 |
61.3 |
0.430 |
| 2015 |
59.3 |
0.434 |
| 2016 |
57.3 |
0.437 |
| 2017 |
55.4 |
0.441 |
| 2018 |
53.5 |
0.445 |
| 2019 |
51.6 |
0.448 |
| 2020 |
49.7 |
0.452 |
| 2021 |
47.9 |
0.456 |
| 2022 |
46.2 |
0.460 |
| 2023 |
44.4 |
0.464 |
| 2024 |
42.7 |
0.468 |
| 2025 |
41.0 |
0.472 |
| 2026 |
39.3 |
0.476 |
| 2027 |
37.7 |
0.480 |
| 2028 |
36.1 |
0.484 |
| 2029 |
34.5 |
0.489 |
| 2030 |
33.0 |
0.493 |
| 2031 |
31.5 |
0.498 |
| 2032 |
30.0 |
0.502 |
| 2033 |
28.5 |
0.507 |
| 2034 |
27.1 |
0.512 |
| 2035 |
25.7 |
0.517 |
| 2036 |
24.3 |
0.522 |
| 2037 |
22.9 |
0.527 |
| 2038 |
21.6 |
0.532 |
| 2039 |
20.3 |
0.537 |
| 2040 |
19.0 |
0.542 |
| 2041 |
17.8 |
0.547 |
| 2042 |
16.5 |
0.552 |
| 2043 |
15.3 |
0.558 |
| 2044 |
14.1 |
0.563 |
| 2045 |
13.0 |
0.568 |
| 2046 |
11.8 |
0.574 |
| 2047 |
10.7 |
0.579 |
| 2048 |
9.6 |
0.584 |
| 2049 |
8.5 |
0.590 |
| 2050 |
7.4 |
0.595 |
|
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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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