21072-1355 STF 2752 AB (HD 200968)
21h 07m 10.38s -13° 55' 22.5" P.A. 187.00 sep 3.5 mag 7.29,9.99 Sp K1V dist. 17.57 pc (57.31 l.y.)
| Coord 2000 |
21072-1355 |
|
Discov num |
STF2752 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 07 10.38 -13 55 22.5 |
|
| Date first |
1827 |
|
Date last |
2021 |
|
Obs |
36 |
|
| Pa first |
145 |
|
Pa last |
187.3 |
|
P.A. Now (θ) |
185.7° |
|
| Sep first |
5.2 |
|
Sep last |
3.472 |
|
Sep. Now (ρ) |
3.717" |
|
| Mag pri |
7.29 |
|
Mag sec |
9.99 |
|
delta mag (ΔM) |
2.7 |
|
Spectral class |
K1V (yellow-orange) |
|
| Pri motion ra |
+382 |
|
Sec motion ra |
+362 |
|
| Pri motion dec |
-047 |
|
Sec motion dec |
-033 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.063 (< 0.3, Physical double)
This double is physical.
21072-1355 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 200968 |
|
21 07 10 -13 55 22 |
STF 2752 AB |
2021 |
36 |
187 |
3.5 |
7.29 |
9.99 |
2.70 |
Y |
<=== |
| Show |
|
|
21 07 10 -13 55 22 |
BU 157 AC |
2020 |
17 |
285 |
33.9 |
7.29 |
11.56 |
4.27 |
|
|
| Show |
|
|
21 07 10 -13 55 22 |
KPR 5 AD |
2020 |
5 |
46 |
225.0 |
7.29 |
12.20 |
4.91 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 200968 |
|
Constellation |
Aquarius |
|
SAO |
164147 |
|
HIP |
104239 |
|
| Tycho2 |
5783-01074-1 |
|
HD |
200968 |
|
GC |
29501 |
|
ADS |
14638 |
|
| BD |
BD-14 5936 |
|
Distance |
17.57 |
|
Distance ly |
57.31 |
|
ORBITAL ELEMENTS
| Period (P) | 507.7y | |
Periastron (T) | 2124.1y | |
Semi-major axis (a) | 3.876a | |
| Eccentricity (e) | 0.45 | |
Inclination (i) | 54° | |
Longitude of periastron (ω) | 349.9° | |
| Node (Ω) | 335.5° | |
Notes | n | |
Reference | Hrt2013c | |
| Equinox | 2000 | |
Last observation | 2000 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
177.9 |
4.008 |
| 2001 |
178.3 |
3.980 |
| 2002 |
178.6 |
3.952 |
| 2003 |
179.0 |
3.923 |
| 2004 |
179.4 |
3.894 |
| 2005 |
179.7 |
3.865 |
| 2006 |
180.1 |
3.836 |
| 2007 |
180.5 |
3.807 |
| 2008 |
180.9 |
3.777 |
| 2009 |
181.3 |
3.747 |
| 2010 |
181.7 |
3.717 |
| 2011 |
182.1 |
3.687 |
| 2012 |
182.5 |
3.656 |
| 2013 |
182.9 |
3.625 |
| 2014 |
183.4 |
3.594 |
| 2015 |
183.8 |
3.563 |
| 2016 |
184.2 |
3.532 |
| 2017 |
184.7 |
3.500 |
| 2018 |
185.1 |
3.469 |
| 2019 |
185.6 |
3.437 |
| 2020 |
186.1 |
3.404 |
| 2021 |
186.6 |
3.372 |
| 2022 |
187.1 |
3.340 |
| 2023 |
187.6 |
3.307 |
| 2024 |
188.1 |
3.274 |
| 2025 |
188.6 |
3.241 |
| 2026 |
189.2 |
3.208 |
| 2027 |
189.7 |
3.175 |
| 2028 |
190.3 |
3.141 |
| 2029 |
190.8 |
3.108 |
| 2030 |
191.4 |
3.074 |
| 2031 |
192.0 |
3.040 |
| 2032 |
192.6 |
3.006 |
| 2033 |
193.3 |
2.972 |
| 2034 |
193.9 |
2.938 |
| 2035 |
194.6 |
2.904 |
| 2036 |
195.2 |
2.870 |
| 2037 |
195.9 |
2.835 |
| 2038 |
196.6 |
2.801 |
| 2039 |
197.4 |
2.767 |
| 2040 |
198.1 |
2.732 |
| 2041 |
198.8 |
2.698 |
| 2042 |
199.6 |
2.664 |
| 2043 |
200.4 |
2.629 |
| 2044 |
201.2 |
2.595 |
| 2045 |
202.1 |
2.561 |
| 2046 |
203.0 |
2.527 |
| 2047 |
203.8 |
2.493 |
| 2048 |
204.8 |
2.459 |
| 2049 |
205.7 |
2.425 |
| 2050 |
206.7 |
2.391 |
|
|
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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