08221-4059 HJ 4087 AB (HD 70764)
08h 22m 08.18s -40° 59' 29.6" P.A. 249.00 sep 1.5 mag 7.58,7.98 Sp F5V dist. 80 pc (260.96 l.y.)
| Coord 2000 |
08221-4059 |
|
Discov num |
HJ 4087 |
|
Comp |
AB |
|
Coord arcsec 2000 |
08 22 08.18 -40 59 29.6 |
|
| Date first |
1837 |
|
Date last |
2022 |
|
Obs |
61 |
|
| Pa first |
322 |
|
Pa last |
249.3 |
|
P.A. Now (θ) |
249.3° |
|
| Sep first |
1.0 |
|
Sep last |
1.47 |
|
Sep. Now (ρ) |
1.47" |
|
| Mag pri |
7.58 |
|
Mag sec |
7.98 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
F5V (yellow-white) |
|
| Pri motion ra |
+012 |
|
Sec motion ra |
+012 |
|
| Pri motion dec |
+039 |
|
Sec motion dec |
+039 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
08221-4059 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 70764 |
219839 |
08 22 08 -40 59 30 |
HJ 4087 AB |
2022 |
61 |
249 |
1.5 |
7.58 |
7.98 |
0.40 |
Y |
<=== |
| Show |
|
219839 |
08 22 08 -40 59 30 |
HJ 4087 AC |
2015 |
10 |
342 |
9.4 |
7.58 |
12.40 |
4.82 |
|
|
| Show |
|
219839 |
08 22 08 -40 59 30 |
HJ 4087 AD |
2015 |
7 |
299 |
28.9 |
7.58 |
13.80 |
6.22 |
|
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Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 70764 |
|
Constellation |
Puppis |
|
SAO |
219839 |
|
HIP |
41006 |
|
| Tycho2 |
7665-01801-1 |
|
Gaia DR2 |
5527514818510904576 |
|
HD |
70764 |
|
CD |
CD-40 4151 |
|
| CP |
CP-40 2395 |
|
Distance |
80 |
|
Distance ly |
260.96 |
|
ORBITAL ELEMENTS
| Period (P) | 948.6217y | ± 469.2613 |
Periastron (T) | 2081.9796y | ± 22.2515 |
Semi-major axis (a) | 2.81702a | ± 1.12382 |
| Eccentricity (e) | 0.69571 | ± 0.22144 |
Inclination (i) | 114.653° | ± 13.316 |
Longitude of periastron (ω) | 245.233° | ± 20.734 |
| Node (Ω) | 52.855° | ± 11.123 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
259.8 |
1.485 |
| 2001 |
259.4 |
1.484 |
| 2002 |
259.0 |
1.482 |
| 2003 |
258.5 |
1.481 |
| 2004 |
258.1 |
1.479 |
| 2005 |
257.7 |
1.477 |
| 2006 |
257.3 |
1.476 |
| 2007 |
256.9 |
1.474 |
| 2008 |
256.5 |
1.472 |
| 2009 |
256.1 |
1.470 |
| 2010 |
255.6 |
1.467 |
| 2011 |
255.2 |
1.465 |
| 2012 |
254.8 |
1.462 |
| 2013 |
254.4 |
1.460 |
| 2014 |
254.0 |
1.457 |
| 2015 |
253.5 |
1.454 |
| 2016 |
253.1 |
1.451 |
| 2017 |
252.7 |
1.448 |
| 2018 |
252.2 |
1.444 |
| 2019 |
251.8 |
1.441 |
| 2020 |
251.4 |
1.437 |
| 2021 |
250.9 |
1.433 |
| 2022 |
250.5 |
1.429 |
| 2023 |
250.0 |
1.425 |
| 2024 |
249.6 |
1.420 |
| 2025 |
249.2 |
1.415 |
| 2026 |
248.7 |
1.411 |
| 2027 |
248.2 |
1.405 |
| 2028 |
247.8 |
1.400 |
| 2029 |
247.3 |
1.394 |
| 2030 |
246.9 |
1.389 |
|
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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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