00393+3052 BTM 1 Aa,Ab
00h 39m 19.60s +30° 51' 40.4" P.A. 56.00 sep 0.4 mag 3.28,10.00 Sp K3III+K4 dist. 32.35 pc (105.53 l.y.)
| Coord 2000 |
00393+3052 |
|
Discov num |
BTM 1 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
00 39 19.60 +30 51 40.4 |
|
| Date first |
2014 |
|
Date last |
2014 |
|
Obs |
1 |
|
| Pa first |
56 |
|
Pa last |
56 |
|
P.A. Now (θ) |
56° |
|
| Sep first |
0.4 |
|
Sep last |
0.357 |
|
Sep. Now (ρ) |
0.357" |
|
| Mag pri |
3.28 |
|
Mag sec |
10.00 |
|
delta mag (ΔM) |
6.72 |
|
Spectral class |
K3III+K4 (yellow-orange/yellow-orange) |
|
| Pri motion ra |
+114 |
|
Sec motion ra |
|
|
| Pri motion dec |
-084 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00393+3052 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
54058 |
00 39 20 +30 51 40 |
BTM 1 Aa,Ab |
2014 |
1 |
56 |
0.4 |
3.28 |
10.00 |
6.72 |
Y |
<=== |
| Show |
Del And |
54058 |
00 39 20 +30 51 40 |
BU 491 AB |
2015 |
18 |
299 |
28.9 |
3.25 |
12.44 |
9.19 |
|
|
| Show |
|
54058 |
00 39 20 +30 51 40 |
BU 491 AC |
2012 |
5 |
104 |
32.2 |
3.25 |
15.70 |
12.45 |
|
|
Quadruple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Andromeda |
|
SAO |
54058 |
|
HIP |
3092 |
|
Tycho2 |
2275-01753-1 |
|
| Gaia DR2 |
2858629802997462272 |
|
HD |
3627 |
|
HR |
165 |
|
GC |
774 |
|
| ADS |
548 |
|
BD |
BD+30 91 |
|
Bayer |
Delta Andromedae |
|
Bayer name |
Del And |
|
| Flamsteed |
31 Andromedae |
|
Flamsteed name |
31 And |
|
FK5 |
20 |
|
Distance |
32.35 |
|
| Distance ly |
105.53 |
|
Bayer greek |
δ And |
|
ORBITAL ELEMENTS
| Period (P) | 52.8y | |
Periastron (T) | 1958.5y | ± 1.1 |
Semi-major axis (a) | 0.62a | ± 0.04 |
| Eccentricity (e) | 0.5 | ± 0.1 |
Inclination (i) | 137° | ± 5 |
Longitude of periastron (ω) | 231° | ± 9 |
| Node (Ω) | 290° | ± 7 |
Notes | n | |
Reference | Gon2002b | |
| Equinox | | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
187.8 |
0.517 |
| 2001 |
181.4 |
0.499 |
| 2002 |
174.5 |
0.483 |
| 2003 |
167.1 |
0.467 |
| 2004 |
159.3 |
0.453 |
| 2005 |
150.9 |
0.438 |
| 2006 |
141.9 |
0.422 |
| 2007 |
132.2 |
0.404 |
| 2008 |
121.5 |
0.381 |
| 2009 |
109.1 |
0.352 |
| 2010 |
94.2 |
0.314 |
| 2011 |
74.8 |
0.274 |
| 2012 |
49.7 |
0.244 |
| 2013 |
21.1 |
0.244 |
| 2014 |
356.2 |
0.278 |
| 2015 |
338.1 |
0.332 |
| 2016 |
325.3 |
0.392 |
| 2017 |
315.9 |
0.452 |
| 2018 |
308.7 |
0.508 |
| 2019 |
302.9 |
0.558 |
| 2020 |
297.9 |
0.604 |
| 2021 |
293.7 |
0.644 |
| 2022 |
289.9 |
0.680 |
| 2023 |
286.5 |
0.710 |
| 2024 |
283.3 |
0.737 |
| 2025 |
280.3 |
0.759 |
| 2026 |
277.5 |
0.778 |
| 2027 |
274.8 |
0.793 |
| 2028 |
272.2 |
0.805 |
| 2029 |
269.7 |
0.814 |
| 2030 |
267.2 |
0.820 |
|
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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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