02270+3117 HO 216 (HD 15128)
02h 27m 00.99s +31° 17' 17.3" P.A. 6.00 sep 1.4 mag 7.90,9.44 Sp F6V dist. 78.93 pc (257.47 l.y.)
| Coord 2000 |
02270+3117 |
|
Discov num |
HO 216 |
|
Comp |
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Coord arcsec 2000 |
02 27 00.99 +31 17 17.3 |
|
| Date first |
1887 |
|
Date last |
2018 |
|
Obs |
29 |
|
| Pa first |
331 |
|
Pa last |
6.3 |
|
P.A. Now (θ) |
6.3° |
|
| Sep first |
1.0 |
|
Sep last |
1.431 |
|
Sep. Now (ρ) |
1.431" |
|
| Mag pri |
7.90 |
|
Mag sec |
9.44 |
|
delta mag (ΔM) |
1.54 |
|
Spectral class |
F6V (yellow-white) |
|
| Pri motion ra |
+088 |
|
Sec motion ra |
+088 |
|
| Pri motion dec |
-035 |
|
Sec motion dec |
-035 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 15128 |
|
Constellation |
Triangulum |
|
SAO |
55566 |
|
HIP |
11408 |
|
| Tycho2 |
2323-01122-1 |
|
Gaia DR2 |
132522762106356224 |
|
HD |
15128 |
|
ADS |
1851 |
|
| BD |
BD+30 396 |
|
Distance |
78.93 |
|
Distance ly |
257.47 |
|
ORBITAL ELEMENTS
| Period (P) | 1040.7382y | ± 494.5483 |
Periastron (T) | 1849.6088y | ± 72.7469 |
Semi-major axis (a) | 2.47564a | ± 1.22043 |
| Eccentricity (e) | 0.85739 | ± 0.22498 |
Inclination (i) | 67.639° | ± 11.538 |
Longitude of periastron (ω) | 97.035° | ± 18.245 |
| Node (Ω) | 134.565° | ± 49.044 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
2.4 |
1.386 |
| 2001 |
2.7 |
1.387 |
| 2002 |
2.9 |
1.389 |
| 2003 |
3.1 |
1.391 |
| 2004 |
3.3 |
1.392 |
| 2005 |
3.5 |
1.394 |
| 2006 |
3.7 |
1.396 |
| 2007 |
3.9 |
1.397 |
| 2008 |
4.1 |
1.399 |
| 2009 |
4.4 |
1.400 |
| 2010 |
4.6 |
1.402 |
| 2011 |
4.8 |
1.404 |
| 2012 |
5.0 |
1.405 |
| 2013 |
5.2 |
1.407 |
| 2014 |
5.4 |
1.408 |
| 2015 |
5.6 |
1.410 |
| 2016 |
5.8 |
1.411 |
| 2017 |
6.0 |
1.413 |
| 2018 |
6.2 |
1.414 |
| 2019 |
6.5 |
1.416 |
| 2020 |
6.7 |
1.417 |
| 2021 |
6.9 |
1.419 |
| 2022 |
7.1 |
1.420 |
| 2023 |
7.3 |
1.421 |
| 2024 |
7.5 |
1.423 |
| 2025 |
7.7 |
1.424 |
| 2026 |
7.9 |
1.426 |
| 2027 |
8.1 |
1.427 |
| 2028 |
8.3 |
1.429 |
| 2029 |
8.5 |
1.430 |
| 2030 |
8.7 |
1.431 |
|
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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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