16133+1332 STF 2021 AB (49 Ser)
16h 13m 18.45s +13° 31' 37.2" sep 4.0 mag 7.43,7.48 Sp G9V dist. 23.58 pc (76.92 l.y.)
| Coord 2000 |
16133+1332 |
|
Discov num |
STF2021 |
|
Comp |
AB |
|
Coord arcsec 2000 |
16 13 18.45 +13 31 37.2 |
|
| Date first |
1825 |
|
Date last |
2021 |
|
Obs |
430 |
|
| Pa first |
318 |
|
Pa last |
0.4 |
|
P.A. Now (θ) |
0.4° |
|
| Sep first |
3.5 |
|
Sep last |
4.04 |
|
Sep. Now (ρ) |
4.04" |
|
| Mag pri |
7.43 |
|
Mag sec |
7.48 |
|
delta mag (ΔM) |
0.05 |
|
Spectral class |
G9V (yellow) |
|
| Pri motion ra |
+183 |
|
Sec motion ra |
+183 |
|
| Pri motion dec |
-419 |
|
Sec motion dec |
-419 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
16133+1332 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
102018 |
16 13 18 +13 31 37 |
CHR 52 Aa,Ab |
1983 |
1 |
125 |
0.2 |
7.53 |
|
|
|
|
| Show |
49 Ser |
|
16 13 18 +13 31 37 |
STF 2021 AB |
2021 |
430 |
0 |
4.0 |
7.43 |
7.48 |
0.05 |
Y |
<=== |
| Show |
|
|
16 13 18 +13 31 37 |
STF 2021 AC |
2001 |
13 |
118 |
206.2 |
7.43 |
11.28 |
3.85 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
49 Ser |
|
Constellation |
Hercules |
|
HIP |
79492 |
|
Tycho2 |
0958-01468-1 |
|
| Gaia DR2 |
4464207428577214464 |
|
HD |
145958 |
|
GC |
21821 |
|
ADS |
9969 |
|
| GL |
Gl 615.1A |
|
BD |
BD+13 3091 |
|
Flamsteed |
49 Serpentis |
|
Flamsteed name |
49 Ser |
|
| Distance |
23.58 |
|
Distance ly |
76.92 |
|
Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Ser vs Her)
ORBITAL ELEMENTS
| Period (P) | 949.6773y | ± 430.3609 |
Periastron (T) | 1713.7408y | ± 68.8958 |
Semi-major axis (a) | 3.97885a | ± 1.05309 |
| Eccentricity (e) | 0.29964 | ± 0.29398 |
Inclination (i) | 52.38° | ± 10.38 |
Longitude of periastron (ω) | 79.167° | ± 47.111 |
| Node (Ω) | 150.395° | ± 27.753 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
354.0 |
4.105 |
| 2001 |
354.2 |
4.102 |
| 2002 |
354.4 |
4.100 |
| 2003 |
354.7 |
4.098 |
| 2004 |
354.9 |
4.095 |
| 2005 |
355.1 |
4.093 |
| 2006 |
355.3 |
4.090 |
| 2007 |
355.5 |
4.088 |
| 2008 |
355.7 |
4.085 |
| 2009 |
355.9 |
4.082 |
| 2010 |
356.1 |
4.080 |
| 2011 |
356.3 |
4.077 |
| 2012 |
356.5 |
4.074 |
| 2013 |
356.8 |
4.071 |
| 2014 |
357.0 |
4.068 |
| 2015 |
357.2 |
4.065 |
| 2016 |
357.4 |
4.062 |
| 2017 |
357.6 |
4.059 |
| 2018 |
357.8 |
4.056 |
| 2019 |
358.0 |
4.053 |
| 2020 |
358.2 |
4.050 |
| 2021 |
358.4 |
4.046 |
| 2022 |
358.7 |
4.043 |
| 2023 |
358.9 |
4.039 |
| 2024 |
359.1 |
4.036 |
| 2025 |
359.3 |
4.033 |
| 2026 |
359.5 |
4.029 |
| 2027 |
359.7 |
4.025 |
| 2028 |
360.0 |
4.022 |
| 2029 |
0.2 |
4.018 |
| 2030 |
0.4 |
4.014 |
|
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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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