03175+6540 STT 52 AB (HD 20104)
03h 17m 31.54s +65° 39' 30.1" P.A. 56.00 sep 0.5 mag 7.06,7.40 Sp A2V dist. 168.92 pc (551.02 l.y.)
| Coord 2000 |
03175+6540 |
|
Discov num |
STT 52 |
|
Comp |
AB |
|
Coord arcsec 2000 |
03 17 31.54 +65 39 30.1 |
|
| Date first |
1843 |
|
Date last |
2015 |
|
Obs |
146 |
|
| Pa first |
157 |
|
Pa last |
56.3 |
|
P.A. Now (θ) |
56.3° |
|
| Sep first |
0.4 |
|
Sep last |
0.484 |
|
Sep. Now (ρ) |
0.484" |
|
| Mag pri |
7.06 |
|
Mag sec |
7.40 |
|
delta mag (ΔM) |
0.34 |
|
Spectral class |
A2V (white) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
+005 |
|
Sec motion dec |
+005 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
03175+6540 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 20104 |
12686 |
03 17 32 +65 39 30 |
STT 52 AB |
2015 |
146 |
56 |
0.5 |
7.06 |
7.40 |
0.34 |
Y |
<=== |
| Show |
|
12686 |
03 17 32 +65 39 30 |
STT 52 AB,C |
2012 |
4 |
223 |
81.1 |
6.46 |
12.70 |
6.24 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 20104 |
|
Constellation |
Camelopardalis |
|
SAO |
12686 |
|
HIP |
15309 |
|
| Tycho2 |
4061-00195-1 |
|
Gaia DR2 |
491404564303661824 |
|
HD |
20104 |
|
HR |
967 |
|
| GC |
3893 |
|
ADS |
2436 |
|
BD |
BD+65 338 |
|
Distance |
168.92 |
|
| Distance ly |
551.02 |
|
ORBITAL ELEMENTS
| Period (P) | 1593.1y | |
Periastron (T) | 3418.5y | |
Semi-major axis (a) | 1.918a | |
| Eccentricity (e) | 0.807 | |
Inclination (i) | 105.4° | |
Longitude of periastron (ω) | 307.4° | |
| Node (Ω) | 146.9° | |
Notes | n | |
Reference | Msn2017e | |
| Equinox | 2000 | |
Last observation | 2010 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
62.6 |
0.480 |
| 2001 |
62.0 |
0.481 |
| 2002 |
61.4 |
0.482 |
| 2003 |
60.9 |
0.484 |
| 2004 |
60.3 |
0.485 |
| 2005 |
59.8 |
0.487 |
| 2006 |
59.2 |
0.488 |
| 2007 |
58.7 |
0.490 |
| 2008 |
58.1 |
0.491 |
| 2009 |
57.6 |
0.493 |
| 2010 |
57.1 |
0.494 |
| 2011 |
56.5 |
0.496 |
| 2012 |
56.0 |
0.498 |
| 2013 |
55.5 |
0.500 |
| 2014 |
55.0 |
0.501 |
| 2015 |
54.4 |
0.503 |
| 2016 |
53.9 |
0.505 |
| 2017 |
53.4 |
0.507 |
| 2018 |
52.9 |
0.509 |
| 2019 |
52.4 |
0.511 |
| 2020 |
51.9 |
0.513 |
| 2021 |
51.4 |
0.515 |
| 2022 |
50.9 |
0.517 |
| 2023 |
50.4 |
0.519 |
| 2024 |
50.0 |
0.521 |
| 2025 |
49.5 |
0.523 |
| 2026 |
49.0 |
0.525 |
| 2027 |
48.5 |
0.527 |
| 2028 |
48.1 |
0.529 |
| 2029 |
47.6 |
0.532 |
| 2030 |
47.1 |
0.534 |
|
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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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