15440+0231 RDR 6 Ba,Bb
15h 44m 02.15s +02° 31' 02.2" P.A. 30.00 sep 0.2 mag 12.70,12.80 Sp M3+M3 dist. 14.66 pc (47.82 l.y.)
| Coord 2000 |
15440+0231 |
|
Discov num |
RDR 6 |
|
Comp |
Ba,Bb |
|
Coord arcsec 2000 |
15 44 02.15 +02 31 02.2 |
|
| Date first |
2009 |
|
Date last |
2021 |
|
Obs |
8 |
|
| Pa first |
31 |
|
Pa last |
30.1 |
|
P.A. Now (θ) |
30.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.222 |
|
Sep. Now (ρ) |
0.222" |
|
| Mag pri |
12.70 |
|
Mag sec |
12.80 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
M3+M3 (red/red) |
|
| Pri motion ra |
-043 |
|
Sec motion ra |
|
|
| Pri motion dec |
-147 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
15440+0231 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Psi Ser |
121152 |
15 44 02 +02 30 56 |
A 2230 AB |
2018 |
22 |
15 |
4.5 |
5.95 |
12.00 |
6.05 |
Y |
|
| Show |
|
121152 |
15 44 02 +02 30 56 |
A 2230 AC |
2013 |
14 |
208 |
193.9 |
5.95 |
9.23 |
3.28 |
|
|
| Show |
|
121152 |
15 44 02 +02 30 56 |
A 2230 AD |
2020 |
24 |
286 |
173.6 |
5.95 |
10.95 |
5.00 |
|
|
| Show |
|
121152 |
15 44 02 +02 31 02 |
RDR 6 Ba,Bb |
2021 |
8 |
30 |
0.2 |
12.70 |
12.80 |
0.10 |
Y |
<=== |
| Show |
|
121151 |
15 43 56 +02 28 01 |
A 2230 CE |
2012 |
16 |
235 |
172.8 |
9.23 |
7.28 |
1.95 |
|
|
Sextuple system
5 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Serpens |
|
SAO |
121152 |
|
HIP |
77052 |
|
Tycho2 |
0355-01288-1 |
|
| HD |
140538 |
|
HR |
5853 |
|
GC |
21155 |
|
ADS |
9763 |
|
| GL |
Gl 596.1A |
|
BD |
BD+02 2989 |
|
Bayer |
Psi Serpentis |
|
Bayer name |
Psi Ser |
|
| FK5 |
3248 |
|
Distance |
14.66 |
|
Distance ly |
47.82 |
|
Bayer greek |
ψ Ser |
|
ORBITAL ELEMENTS
| Period (P) | 6.57y | ± 0.29 |
Periastron (T) | 2020.09y | ± 0.08 |
Semi-major axis (a) | 0.189a | ± 0.008 |
| Eccentricity (e) | 0.357 | ± 0.038 |
Inclination (i) | 70.4° | |
Longitude of periastron (ω) | 230° | ± 9.3 |
| Node (Ω) | 21.4° | ± 2.7 |
Notes | n | |
Reference | Tok2021b | |
| Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
203.2 |
0.131 |
| 2001 |
348.8 |
0.080 |
| 2002 |
20.4 |
0.210 |
| 2003 |
32.9 |
0.217 |
| 2004 |
50.9 |
0.149 |
| 2005 |
112.4 |
0.076 |
| 2006 |
184.3 |
0.129 |
| 2007 |
228.0 |
0.076 |
| 2008 |
9.9 |
0.152 |
| 2009 |
25.9 |
0.226 |
| 2010 |
39.0 |
0.195 |
| 2011 |
67.0 |
0.110 |
| 2012 |
154.2 |
0.089 |
| 2013 |
198.5 |
0.138 |
| 2014 |
329.5 |
0.056 |
| 2015 |
18.4 |
0.200 |
| 2016 |
31.1 |
0.222 |
| 2017 |
47.4 |
0.161 |
| 2018 |
98.1 |
0.080 |
| 2019 |
178.8 |
0.120 |
| 2020 |
216.5 |
0.098 |
| 2021 |
5.6 |
0.131 |
| 2022 |
24.2 |
0.223 |
| 2023 |
36.9 |
0.203 |
| 2024 |
60.6 |
0.123 |
| 2025 |
142.3 |
0.081 |
| 2026 |
194.0 |
0.139 |
| 2027 |
292.2 |
0.043 |
| 2028 |
16.1 |
0.187 |
| 2029 |
29.4 |
0.225 |
| 2030 |
44.3 |
0.173 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
