22564+1727 STF 2957 AB (HD 216863)
22h 56m 23.64s +17° 27' 08.6" P.A. 224.00 sep 4.6 mag 9.20,10.88 Sp K0 dist. 34.15 pc (111.4 l.y.)
| Coord 2000 |
22564+1727 |
|
Discov num |
STF2957 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 56 23.64 +17 27 08.6 |
|
| Date first |
1832 |
|
Date last |
2016 |
|
Obs |
31 |
|
| Pa first |
227 |
|
Pa last |
223.5 |
|
P.A. Now (θ) |
223.5° |
|
| Sep first |
4.7 |
|
Sep last |
4.587 |
|
Sep. Now (ρ) |
4.587" |
|
| Mag pri |
9.20 |
|
Mag sec |
10.88 |
|
delta mag (ΔM) |
1.68 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+212 |
|
Sec motion ra |
+218 |
|
| Pri motion dec |
-182 |
|
Sec motion dec |
-182 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.021 (< 0.3, Physical double)
This double is physical.
22564+1727 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 216863 |
108269 |
22 56 24 +17 27 09 |
STF 2957 AB |
2016 |
31 |
224 |
4.6 |
9.20 |
10.88 |
1.68 |
Y |
<=== |
| Show |
|
108269 |
22 56 24 +17 27 09 |
STF 2957 AC |
2020 |
6 |
43 |
127.9 |
9.20 |
13.36 |
4.16 |
|
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Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 216863 |
|
Constellation |
Pegasus |
|
SAO |
108269 |
|
HIP |
113280 |
|
| Tycho2 |
1711-01331-1 |
|
Gaia DR2 |
2829322183120727680 |
|
HD |
216863 |
|
GC |
31981 |
|
| ADS |
16379 |
|
BD |
BD+16 4838 |
|
Distance |
34.15 |
|
Distance ly |
111.4 |
|
ORBITAL ELEMENTS
| Period (P) | 2068.5238y | ± 909.7854 |
Periastron (T) | 1697.0045y | ± 425.3372 |
Semi-major axis (a) | 9.21287a | ± 4.4107 |
| Eccentricity (e) | 0.78625 | ± 0.17772 |
Inclination (i) | 91.378° | ± 1.252 |
Longitude of periastron (ω) | 97.335° | ± 13.096 |
| Node (Ω) | 47.402° | ± 4.006 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2008 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
224.6 |
4.528 |
| 2001 |
224.6 |
4.523 |
| 2002 |
224.6 |
4.517 |
| 2003 |
224.6 |
4.512 |
| 2004 |
224.6 |
4.507 |
| 2005 |
224.6 |
4.502 |
| 2006 |
224.6 |
4.496 |
| 2007 |
224.6 |
4.491 |
| 2008 |
224.6 |
4.485 |
| 2009 |
224.5 |
4.480 |
| 2010 |
224.5 |
4.474 |
| 2011 |
224.5 |
4.469 |
| 2012 |
224.5 |
4.463 |
| 2013 |
224.5 |
4.458 |
| 2014 |
224.5 |
4.452 |
| 2015 |
224.5 |
4.447 |
| 2016 |
224.5 |
4.441 |
| 2017 |
224.5 |
4.435 |
| 2018 |
224.4 |
4.430 |
| 2019 |
224.4 |
4.424 |
| 2020 |
224.4 |
4.418 |
| 2021 |
224.4 |
4.412 |
| 2022 |
224.4 |
4.407 |
| 2023 |
224.4 |
4.401 |
| 2024 |
224.4 |
4.395 |
| 2025 |
224.4 |
4.389 |
| 2026 |
224.3 |
4.383 |
| 2027 |
224.3 |
4.377 |
| 2028 |
224.3 |
4.371 |
| 2029 |
224.3 |
4.365 |
| 2030 |
224.3 |
4.359 |
|
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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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