16278-0822 RST 3949 Aa,Ab
16h 27m 48.23s -08° 22' 18.1" P.A. 56.00 sep 1.0 mag 4.71,8.83 Sp A3m dist. 40.95 pc (133.58 l.y.)
Coord 2000 |
16278-0822 |
|
Discov num |
RST3949 |
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Comp |
Aa,Ab |
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Coord arcsec 2000 |
16 27 48.23 -08 22 18.1 |
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Date first |
1938 |
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Date last |
2019 |
|
Obs |
29 |
|
Pa first |
51 |
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Pa last |
56.1 |
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P.A. Now (θ) |
56.1° |
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Sep first |
0.8 |
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Sep last |
0.984 |
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Sep. Now (ρ) |
0.984" |
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Mag pri |
4.71 |
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Mag sec |
8.83 |
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delta mag (ΔM) |
4.12 |
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Spectral class |
A3m (white) |
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Pri motion ra |
-067 |
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Sec motion ra |
|
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Pri motion dec |
-013 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
16278-0822 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
141187 |
16 27 48 -08 22 18 |
RST 3949 Aa,Ab |
2019 |
29 |
56 |
1.0 |
4.71 |
8.83 |
4.12 |
Y |
<=== |
Show |
Ups Oph |
141187 |
16 27 48 -08 22 18 |
SHY 287 AB |
2016 |
5 |
272 |
999.9 |
4.65 |
9.32 |
4.67 |
|
|
Show |
|
141187 |
16 27 48 -08 22 18 |
TOK 603 AC |
2016 |
7 |
202 |
775.0 |
4.65 |
8.85 |
4.20 |
|
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Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Var name |
NSV7738 Oph |
|
Constellation |
Ophiuchus |
|
SAO |
141187 |
|
HIP |
80628 |
|
Tycho2 |
5626-01388-1 |
|
Gaia DR2 |
4350816684193187584 |
|
HD |
148367 |
|
HR |
6129 |
|
GC |
22134 |
|
BD |
BD-08 4243 |
|
Bayer |
Upsilon Ophiuchi |
|
Bayer name |
Ups Oph |
|
Flamsteed |
3 Ophiuchi |
|
Flamsteed name |
3 Oph |
|
FK5 |
3299 |
|
Distance |
40.95 |
|
Distance ly |
133.58 |
|
Bayer greek |
υ Oph |
|
ORBITAL ELEMENTS
Period (P) | 76.4608y | ± 1.1411 |
Periastron (T) | 1995.5151y | ± 0.8813 |
Semi-major axis (a) | 0.76338a | ± 0.03259 |
Eccentricity (e) | 0.48188 | ± 0.03562 |
Inclination (i) | 25.442° | ± 8.411 |
Longitude of periastron (ω) | 128.099° | ± 20.3 |
Node (Ω) | 139.48° | ± 20.658 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
327.4 |
0.473 |
2001 |
336.6 |
0.501 |
2002 |
344.8 |
0.528 |
2003 |
352.2 |
0.555 |
2004 |
358.9 |
0.582 |
2005 |
5.1 |
0.608 |
2006 |
10.7 |
0.633 |
2007 |
15.9 |
0.658 |
2008 |
20.7 |
0.683 |
2009 |
25.2 |
0.707 |
2010 |
29.4 |
0.730 |
2011 |
33.4 |
0.753 |
2012 |
37.1 |
0.775 |
2013 |
40.6 |
0.797 |
2014 |
44.0 |
0.817 |
2015 |
47.1 |
0.837 |
2016 |
50.1 |
0.857 |
2017 |
53.0 |
0.876 |
2018 |
55.8 |
0.894 |
2019 |
58.5 |
0.911 |
2020 |
61.1 |
0.927 |
2021 |
63.5 |
0.943 |
2022 |
65.9 |
0.957 |
2023 |
68.3 |
0.971 |
2024 |
70.5 |
0.984 |
2025 |
72.8 |
0.997 |
2026 |
74.9 |
1.008 |
2027 |
77.0 |
1.019 |
2028 |
79.1 |
1.028 |
2029 |
81.1 |
1.037 |
2030 |
83.1 |
1.044 |
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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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