16468+0821 A 2784 AB (HD 151389)
16h 46m 46.24s +08° 22' 31.6" P.A. 169.00 sep 0.4 mag 9.80,11.00 Sp G0
| Coord 2000 |
16468+0821 |
|
Discov num |
A 2784 |
|
Comp |
AB |
|
Coord arcsec 2000 |
16 46 46.24 +08 22 31.6 |
|
| Date first |
1914 |
|
Date last |
2018 |
|
Obs |
12 |
|
| Pa first |
92 |
|
Pa last |
169.4 |
|
P.A. Now (θ) |
169.4° |
|
| Sep first |
0.3 |
|
Sep last |
0.405 |
|
Sep. Now (ρ) |
0.405" |
|
| Mag pri |
9.80 |
|
Mag sec |
11.00 |
|
delta mag (ΔM) |
1.2 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
-052 |
|
Sec motion ra |
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|
| Pri motion dec |
+039 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
16468+0821 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 151389 |
|
16 46 46 +08 22 32 |
A 2784 AB |
2018 |
12 |
169 |
0.4 |
9.80 |
11.00 |
1.20 |
Y |
<=== |
| Show |
|
|
16 46 46 +08 22 32 |
A 2784 AB,C |
2015 |
13 |
170 |
18.2 |
9.99 |
11.10 |
1.11 |
|
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 151389 |
|
Constellation |
Hercules |
|
Tycho2 |
0962-01408-1 |
|
Gaia DR2 |
4445240440683287680 |
|
| HD |
151389 |
|
ADS |
10206 |
|
ORBITAL ELEMENTS
| Period (P) | 400.1y | |
Periastron (T) | 1895.6y | |
Semi-major axis (a) | 0.407a | |
| Eccentricity (e) | 0.12 | |
Inclination (i) | 44° | |
Longitude of periastron (ω) | 276.6° | |
| Node (Ω) | 139.7° | |
Notes | | |
Reference | Sca2017d | |
| Equinox | 2000 | |
Last observation | 2017 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
157.5 |
0.399 |
| 2001 |
158.1 |
0.399 |
| 2002 |
158.8 |
0.398 |
| 2003 |
159.5 |
0.398 |
| 2004 |
160.1 |
0.397 |
| 2005 |
160.8 |
0.396 |
| 2006 |
161.5 |
0.396 |
| 2007 |
162.2 |
0.395 |
| 2008 |
162.9 |
0.394 |
| 2009 |
163.5 |
0.394 |
| 2010 |
164.2 |
0.393 |
| 2011 |
164.9 |
0.392 |
| 2012 |
165.6 |
0.391 |
| 2013 |
166.3 |
0.390 |
| 2014 |
167.0 |
0.389 |
| 2015 |
167.7 |
0.389 |
| 2016 |
168.4 |
0.388 |
| 2017 |
169.1 |
0.387 |
| 2018 |
169.8 |
0.386 |
| 2019 |
170.6 |
0.385 |
| 2020 |
171.3 |
0.384 |
| 2021 |
172.0 |
0.383 |
| 2022 |
172.7 |
0.382 |
| 2023 |
173.5 |
0.380 |
| 2024 |
174.2 |
0.379 |
| 2025 |
175.0 |
0.378 |
| 2026 |
175.7 |
0.377 |
| 2027 |
176.4 |
0.376 |
| 2028 |
177.2 |
0.375 |
| 2029 |
178.0 |
0.374 |
| 2030 |
178.7 |
0.373 |
|
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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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