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 |
|
|
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 |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 15420+0027 A 2176 (HD 140122) : NOTES
| discov_num |
notes |
refcode |
| A 2176 |
One component is SB1, P = 10.9 d. Only elements P, T, and a have been |
Sta1978c |
|
amended by Starikova (1978) from the orbit of Couteau (1960). |
Cou1960c |
|
1986.395: Separation for this partially resolved pair was calculated |
|
|
under the assumption of zero or otherwise known magnitude difference. |
Tok1985 |
REFERENCES
| refcode |
metd |
author |
reference |
| Cou1960c |
orb - |
Couteau, P. |
1960JO.....43...13C |
| Cou1960c |
|
J. Obs. 43, 13, 1960 |
|
| Sta1978c |
orb - |
Starikova, G.A. |
1978ATsir1002....3S |
| Sta1978c |
|
Astron. Tsirk. #1002, 3, 1978 |
|
| Tok1985 |
Ig u |
Tokovinin, A.A. |
1985A&AS...61..483T |
| Tok1985 |
|
A&AS 61, 483, 1985 |
|
| Tok2015c |
orb+j |
Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. |
2015AJ....150...50T |
| Tok2015c |
+St |
AJ 150, 50, 2015 (some measures corrected in Tok2017b) |
2017AJ....154..110T |
DISCOVERER
| idgroup |
discov |
author |
| 1 |
A |
Aitken, R.G. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 15420+0027 |
A 2176 |
|
2008 |
58 |
188 |
0.2 |
8.00 |
8.00 |
A0 |
NO |
154201.39+002725.5 |
| 15420+0027 |
A 2176 |
|
2009 |
60 |
189 |
0.2 |
8.00 |
8.00 |
A0 |
NO |
154201.39+002725.5 |
| 15420+0027 |
A 2176 |
|
2014 |
62 |
200 |
0.2 |
8.00 |
8.00 |
A0 |
NO |
154201.39+002725.5 |
| 15420+0027 |
A 2176 |
|
2018 |
63 |
28 |
0.2 |
8.00 |
8.00 |
A0 |
NO |
154201.39+002725.5 |
| 15420+0027 |
A 2176 |
|
2021 |
64 |
216 |
0.2 |
7.70 |
8.40 |
A1IV |
NO |
154201.39+002725.5 |
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WDS 15420+0027 A 2176 (HD 140122) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 15420+0027 A 2176 (HD 140122) : MEASURES
No records found.
WDS 15420+0027 (HD 140122) : VIRTUAL EYEPIECE
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WDS 15420+0027 (HD 140122) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
