08421-5245 B 1624 (HD 74497)
08h 42m 06.65s -52° 45' 23.3" P.A. 257.00 sep 0.4 mag 8.22,9.62 Sp G3V dist. 49.88 pc (162.71 l.y.)
| Coord 2000 |
08421-5245 |
|
Discov num |
B 1624 |
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Comp |
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Coord arcsec 2000 |
08 42 06.65 -52 45 23.3 |
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| Date first |
1929 |
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Date last |
2020 |
|
Obs |
42 |
|
| Pa first |
118 |
|
Pa last |
256.6 |
|
P.A. Now (θ) |
259° |
|
| Sep first |
0.2 |
|
Sep last |
0.448 |
|
Sep. Now (ρ) |
0.493" |
|
| Mag pri |
8.22 |
|
Mag sec |
9.62 |
|
delta mag (ΔM) |
1.4 |
|
Spectral class |
G3V (yellow) |
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| Pri motion ra |
-028 |
|
Sec motion ra |
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|
| Pri motion dec |
+030 |
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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.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 74497 |
|
Constellation |
Vela |
|
SAO |
236196 |
|
HIP |
42695 |
|
| Tycho2 |
8569-01130-1 |
|
Gaia DR2 |
5318575448532526848 |
|
HD |
74497 |
|
CD |
CD-52 2498 |
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| CP |
CP-52 1599 |
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Distance |
49.88 |
|
Distance ly |
162.71 |
|
ORBITAL ELEMENTS
| Period (P) | 74.05y | ± 0.43 |
Periastron (T) | 1995.69y | ± 0.31 |
Semi-major axis (a) | 0.474a | ± 0.002 |
| Eccentricity (e) | 0.24 | ± 0.003 |
Inclination (i) | 71.4° | ± 0.2 |
Longitude of periastron (ω) | 0.1° | ± 2.1 |
| Node (Ω) | 89.7° | ± 0.2 |
Notes | n | |
Reference | Tok2015c | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
102.1 |
0.315 |
| 2001 |
105.7 |
0.293 |
| 2002 |
110.0 |
0.269 |
| 2003 |
115.2 |
0.243 |
| 2004 |
121.7 |
0.216 |
| 2005 |
129.9 |
0.190 |
| 2006 |
140.5 |
0.168 |
| 2007 |
154.0 |
0.151 |
| 2008 |
170.0 |
0.142 |
| 2009 |
186.6 |
0.145 |
| 2010 |
201.6 |
0.157 |
| 2011 |
213.8 |
0.177 |
| 2012 |
223.3 |
0.202 |
| 2013 |
230.6 |
0.230 |
| 2014 |
236.2 |
0.260 |
| 2015 |
240.7 |
0.290 |
| 2016 |
244.4 |
0.319 |
| 2017 |
247.4 |
0.348 |
| 2018 |
250.0 |
0.376 |
| 2019 |
252.3 |
0.402 |
| 2020 |
254.2 |
0.427 |
| 2021 |
256.0 |
0.451 |
| 2022 |
257.6 |
0.473 |
| 2023 |
259.0 |
0.493 |
| 2024 |
260.4 |
0.511 |
| 2025 |
261.6 |
0.528 |
| 2026 |
262.8 |
0.542 |
| 2027 |
263.9 |
0.555 |
| 2028 |
265.0 |
0.565 |
| 2029 |
266.0 |
0.574 |
| 2030 |
267.1 |
0.580 |
|
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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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