22479+1259 HU 985 (HD 215839)
22h 47m 54.00s +12° 58' 36.2" P.A. 134.00 sep 0.7 mag 9.60,9.88 Sp G5
| Coord 2000 |
22479+1259 |
|
Discov num |
HU 985 |
|
Comp |
|
|
Coord arcsec 2000 |
22 47 54.00 +12 58 36.2 |
|
| Date first |
1888 |
|
Date last |
2016 |
|
Obs |
41 |
|
| Pa first |
224 |
|
Pa last |
133.7 |
|
P.A. Now (θ) |
133.7° |
|
| Sep first |
0.7 |
|
Sep last |
0.748 |
|
Sep. Now (ρ) |
0.748" |
|
| Mag pri |
9.60 |
|
Mag sec |
9.88 |
|
delta mag (ΔM) |
0.28 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+074 |
|
Sec motion ra |
+074 |
|
| Pri motion dec |
-024 |
|
Sec motion dec |
-024 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 215839 |
|
Constellation |
Pegasus |
|
SAO |
108180 |
|
Tycho2 |
1158-01394-1 |
|
| Gaia DR2 |
2719588994228403712 |
|
HD |
215839 |
|
ADS |
16273 |
|
ORBITAL ELEMENTS
| Period (P) | 495y | |
Periastron (T) | 2080y | |
Semi-major axis (a) | 0.87a | |
| Eccentricity (e) | 0.416 | |
Inclination (i) | 124.1° | |
Longitude of periastron (ω) | 62° | |
| Node (Ω) | 117.2° | |
Notes | n | |
Reference | USN2002 | |
| Equinox | 2000 | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
146.4 |
0.664 |
| 2001 |
145.7 |
0.665 |
| 2002 |
145.1 |
0.665 |
| 2003 |
144.5 |
0.666 |
| 2004 |
143.8 |
0.666 |
| 2005 |
143.2 |
0.666 |
| 2006 |
142.6 |
0.667 |
| 2007 |
141.9 |
0.667 |
| 2008 |
141.3 |
0.667 |
| 2009 |
140.7 |
0.667 |
| 2010 |
140.0 |
0.667 |
| 2011 |
139.4 |
0.667 |
| 2012 |
138.8 |
0.667 |
| 2013 |
138.1 |
0.667 |
| 2014 |
137.5 |
0.666 |
| 2015 |
136.9 |
0.666 |
| 2016 |
136.2 |
0.666 |
| 2017 |
135.6 |
0.665 |
| 2018 |
135.0 |
0.664 |
| 2019 |
134.3 |
0.664 |
| 2020 |
133.7 |
0.663 |
| 2021 |
133.1 |
0.662 |
| 2022 |
132.4 |
0.661 |
| 2023 |
131.8 |
0.659 |
| 2024 |
131.1 |
0.658 |
| 2025 |
130.5 |
0.657 |
| 2026 |
129.8 |
0.655 |
| 2027 |
129.2 |
0.653 |
| 2028 |
128.5 |
0.652 |
| 2029 |
127.9 |
0.650 |
| 2030 |
127.2 |
0.648 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
