15420+0027 A 2176 (HD 140122)
15h 42m 01.39s +00° 27' 25.5" P.A. 216.00 sep 0.2 mag 7.70,8.40 Sp A1IV dist. 163.4 pc (533.01 l.y.)
| Coord 2000 |
15420+0027 |
|
Discov num |
A 2176 |
|
Comp |
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Coord arcsec 2000 |
15 42 01.39 +00 27 25.5 |
|
| Date first |
1910 |
|
Date last |
2021 |
|
Obs |
64 |
|
| Pa first |
206 |
|
Pa last |
216.1 |
|
P.A. Now (θ) |
219.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.201 |
|
Sep. Now (ρ) |
0.203" |
|
| Mag pri |
7.70 |
|
Mag sec |
8.40 |
|
delta mag (ΔM) |
0.7 |
|
Spectral class |
A1IV (white) |
|
| Pri motion ra |
+021 |
|
Sec motion ra |
|
|
| Pri motion dec |
-018 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 140122 |
|
Constellation |
Serpens |
|
SAO |
121129 |
|
HIP |
76892 |
|
| Tycho2 |
0351-00032-1 |
|
Gaia DR2 |
4416620427889770112 |
|
HD |
140122 |
|
ADS |
9747 |
|
| BD |
BD+00 3389 |
|
Distance |
163.4 |
|
Distance ly |
533.01 |
|
ORBITAL ELEMENTS
| Period (P) | 52.68y | ± 2.04 |
Periastron (T) | 1987.16y | ± 0.38 |
Semi-major axis (a) | 0.148a | ± 0.008 |
| Eccentricity (e) | 0.653 | ± 0.027 |
Inclination (i) | 27.2° | ± 7.4 |
Longitude of periastron (ω) | 279.3° | ± 9.9 |
| Node (Ω) | 97.7° | ± 12.9 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
165.1 |
0.178 |
| 2001 |
168.2 |
0.183 |
| 2002 |
171.2 |
0.189 |
| 2003 |
173.9 |
0.193 |
| 2004 |
176.6 |
0.198 |
| 2005 |
179.1 |
0.202 |
| 2006 |
181.5 |
0.205 |
| 2007 |
183.9 |
0.208 |
| 2008 |
186.2 |
0.211 |
| 2009 |
188.4 |
0.213 |
| 2010 |
190.6 |
0.215 |
| 2011 |
192.8 |
0.216 |
| 2012 |
194.9 |
0.217 |
| 2013 |
197.1 |
0.218 |
| 2014 |
199.2 |
0.218 |
| 2015 |
201.3 |
0.218 |
| 2016 |
203.4 |
0.218 |
| 2017 |
205.6 |
0.217 |
| 2018 |
207.7 |
0.216 |
| 2019 |
209.9 |
0.214 |
| 2020 |
212.1 |
0.212 |
| 2021 |
214.4 |
0.209 |
| 2022 |
216.7 |
0.206 |
| 2023 |
219.1 |
0.203 |
| 2024 |
221.6 |
0.199 |
| 2025 |
224.2 |
0.194 |
| 2026 |
227.0 |
0.189 |
| 2027 |
229.9 |
0.184 |
| 2028 |
233.0 |
0.177 |
| 2029 |
236.3 |
0.170 |
| 2030 |
239.9 |
0.163 |
|
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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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