21124-1500 H 1 47 (HD 201796)
21h 12m 22.56s -15° 00' 00.0" P.A. 309.00 sep 4.2 mag 8.25,8.31 Sp G3IV+G3V dist. 49.26 pc (160.69 l.y.)
| Coord 2000 |
21124-1500 |
|
Discov num |
H 1 47 |
|
Comp |
|
|
Coord arcsec 2000 |
21 12 22.56 -15 00 00.0 |
|
| Date first |
1855 |
|
Date last |
2017 |
|
Obs |
102 |
|
| Pa first |
324 |
|
Pa last |
308.7 |
|
P.A. Now (θ) |
308.7° |
|
| Sep first |
2.9 |
|
Sep last |
4.221 |
|
Sep. Now (ρ) |
4.221" |
|
| Mag pri |
8.25 |
|
Mag sec |
8.31 |
|
delta mag (ΔM) |
0.06 |
|
Spectral class |
G3IV+G3V (yellow/yellow) |
|
| Pri motion ra |
+078 |
|
Sec motion ra |
+050 |
|
| Pri motion dec |
-040 |
|
Sec motion dec |
-022 |
|
| Notes |
N
U
(See Notes, Proper motion indicates non-physical) |
|
rPM=0.38
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 201796 |
|
Constellation |
Capricornus |
|
HIP |
104687 |
|
Tycho2 |
6347-01583-1 |
|
| Gaia DR2 |
6884240252254370304 |
|
HD |
201796 |
|
ADS |
14736 |
|
BD |
BD-15 5913 |
|
| Distance |
49.26 |
|
Distance ly |
160.69 |
|
ORBITAL ELEMENTS
| Period (P) | 4890y | |
Periastron (T) | 1933y | |
Semi-major axis (a) | 15.909a | |
| Eccentricity (e) | 0.63 | |
Inclination (i) | 115.7° | |
Longitude of periastron (ω) | 76.25° | |
| Node (Ω) | 96.75° | |
Notes | n | |
Reference | Hop1974 | |
| Equinox | 1900 | |
Last observation | 1962 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.9 |
2.960 |
| 2001 |
337.2 |
2.980 |
| 2002 |
336.5 |
3.000 |
| 2003 |
335.8 |
3.020 |
| 2004 |
335.1 |
3.040 |
| 2005 |
334.5 |
3.061 |
| 2006 |
333.8 |
3.082 |
| 2007 |
333.1 |
3.104 |
| 2008 |
332.5 |
3.126 |
| 2009 |
331.9 |
3.148 |
| 2010 |
331.2 |
3.171 |
| 2011 |
330.6 |
3.193 |
| 2012 |
330.0 |
3.216 |
| 2013 |
329.4 |
3.240 |
| 2014 |
328.8 |
3.263 |
| 2015 |
328.2 |
3.287 |
| 2016 |
327.6 |
3.311 |
| 2017 |
327.1 |
3.335 |
| 2018 |
326.5 |
3.360 |
| 2019 |
326.0 |
3.385 |
| 2020 |
325.4 |
3.410 |
| 2021 |
324.9 |
3.435 |
| 2022 |
324.4 |
3.460 |
| 2023 |
323.8 |
3.486 |
| 2024 |
323.3 |
3.512 |
| 2025 |
322.8 |
3.538 |
| 2026 |
322.3 |
3.564 |
| 2027 |
321.8 |
3.590 |
| 2028 |
321.3 |
3.617 |
| 2029 |
320.9 |
3.644 |
| 2030 |
320.4 |
3.670 |
| 2031 |
319.9 |
3.697 |
| 2032 |
319.5 |
3.724 |
| 2033 |
319.0 |
3.752 |
| 2034 |
318.6 |
3.779 |
| 2035 |
318.2 |
3.807 |
| 2036 |
317.7 |
3.834 |
| 2037 |
317.3 |
3.862 |
| 2038 |
316.9 |
3.890 |
| 2039 |
316.5 |
3.918 |
| 2040 |
316.1 |
3.946 |
| 2041 |
315.7 |
3.974 |
| 2042 |
315.3 |
4.003 |
| 2043 |
314.9 |
4.031 |
| 2044 |
314.5 |
4.060 |
| 2045 |
314.1 |
4.088 |
| 2046 |
313.7 |
4.117 |
| 2047 |
313.4 |
4.145 |
| 2048 |
313.0 |
4.174 |
| 2049 |
312.7 |
4.203 |
| 2050 |
312.3 |
4.232 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
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