17530+8354 STT 349 (HD 167101)
17h 52m 59.03s +83° 54' 27.2" P.A. 52.00 sep 0.5 mag 7.95,8.89 Sp G5 dist. 219.3 pc (715.36 l.y.)
Coord 2000 |
17530+8354 |
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Discov num |
STT 349 |
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Comp |
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Coord arcsec 2000 |
17 52 59.03 +83 54 27.2 |
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Date first |
1843 |
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Date last |
2018 |
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Obs |
74 |
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Pa first |
92 |
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Pa last |
51.6 |
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P.A. Now (θ) |
51.6° |
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Sep first |
0.4 |
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Sep last |
0.518 |
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Sep. Now (ρ) |
0.518" |
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Mag pri |
7.95 |
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Mag sec |
8.89 |
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delta mag (ΔM) |
0.94 |
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Spectral class |
G5 (yellow) |
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Pri motion ra |
+005 |
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Sec motion ra |
+005 |
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Pri motion dec |
+008 |
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Sec motion dec |
+008 |
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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 167101 |
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Constellation |
Draco |
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SAO |
2975 |
|
HIP |
87534 |
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Tycho2 |
4647-01538-1 |
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Gaia DR2 |
1711360818950866176 |
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HD |
167101 |
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ADS |
11006 |
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BD |
BD+83 527 |
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Distance |
219.3 |
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Distance ly |
715.36 |
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ORBITAL ELEMENTS
Period (P) | 433y | |
Periastron (T) | 1912y | |
Semi-major axis (a) | 0.635a | |
Eccentricity (e) | 0.87 | |
Inclination (i) | 67.5° | |
Longitude of periastron (ω) | 128° | |
Node (Ω) | 98° | |
Notes | n | |
Reference | Hei1995 | |
Equinox | 2000 | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
51.2 |
0.440 |
2001 |
51.6 |
0.444 |
2002 |
51.9 |
0.448 |
2003 |
52.2 |
0.452 |
2004 |
52.5 |
0.457 |
2005 |
52.8 |
0.461 |
2006 |
53.1 |
0.465 |
2007 |
53.4 |
0.469 |
2008 |
53.7 |
0.473 |
2009 |
53.9 |
0.477 |
2010 |
54.2 |
0.482 |
2011 |
54.5 |
0.486 |
2012 |
54.8 |
0.490 |
2013 |
55.0 |
0.494 |
2014 |
55.3 |
0.498 |
2015 |
55.5 |
0.502 |
2016 |
55.8 |
0.506 |
2017 |
56.0 |
0.510 |
2018 |
56.3 |
0.514 |
2019 |
56.5 |
0.518 |
2020 |
56.7 |
0.521 |
2021 |
57.0 |
0.525 |
2022 |
57.2 |
0.529 |
2023 |
57.4 |
0.533 |
2024 |
57.6 |
0.537 |
2025 |
57.9 |
0.541 |
2026 |
58.1 |
0.544 |
2027 |
58.3 |
0.548 |
2028 |
58.5 |
0.552 |
2029 |
58.7 |
0.556 |
2030 |
58.9 |
0.559 |
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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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