04177-6315 RMK 3 (The Ret)
04h 17m 40.27s -63° 15' 19.7" P.A. 2.00 sep 4.1 mag 6.04,7.67 Sp B9III-IV dist. 141.24 pc (460.72 l.y.)
| Coord 2000 |
04177-6315 |
|
Discov num |
RMK 3 |
|
Comp |
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Coord arcsec 2000 |
04 17 40.27 -63 15 19.7 |
|
| Date first |
1835 |
|
Date last |
2015 |
|
Obs |
34 |
|
| Pa first |
6 |
|
Pa last |
2.3 |
|
P.A. Now (θ) |
2.3° |
|
| Sep first |
6.4 |
|
Sep last |
4.084 |
|
Sep. Now (ρ) |
4.084" |
|
| Mag pri |
6.04 |
|
Mag sec |
7.67 |
|
delta mag (ΔM) |
1.63 |
|
Spectral class |
B9III-IV (blue-white) |
|
| Pri motion ra |
+005 |
|
Sec motion ra |
+005 |
|
| Pri motion dec |
+008 |
|
Sec motion dec |
+028 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
rPM=0.703
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
The Ret |
|
Var name |
NSV1556 Ret |
|
Constellation |
Reticulum |
|
SAO |
248986 |
|
| HIP |
20020 |
|
Tycho2 |
8872-01982-1 |
|
Gaia DR2 |
4676067719930656640 |
|
HD |
27657 |
|
| HR |
1372 |
|
GC |
5233 |
|
CD |
CD-63 143 |
|
CP |
CP-63 316 |
|
| Bayer |
Theta Reticuli |
|
Bayer name |
The Ret |
|
Distance |
141.24 |
|
Distance ly |
460.72 |
|
| Bayer greek |
θ Ret |
|
ORBITAL ELEMENTS
| Period (P) | 26000y | |
Periastron (T) | 4900y | ± 900 |
Semi-major axis (a) | 14a | ± 3 |
| Eccentricity (e) | 0.8 | ± 0.3 |
Inclination (i) | 105° | ± 2 |
Longitude of periastron (ω) | 210° | ± 40 |
| Node (Ω) | 55° | ± 13 |
Notes | | |
Reference | LRR2018b | |
| Equinox | 2000 | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
20.4 |
5.633 |
| 2001 |
20.4 |
5.630 |
| 2002 |
20.4 |
5.627 |
| 2003 |
20.4 |
5.624 |
| 2004 |
20.4 |
5.622 |
| 2005 |
20.4 |
5.619 |
| 2006 |
20.3 |
5.616 |
| 2007 |
20.3 |
5.613 |
| 2008 |
20.3 |
5.610 |
| 2009 |
20.3 |
5.608 |
| 2010 |
20.3 |
5.605 |
| 2011 |
20.3 |
5.602 |
| 2012 |
20.3 |
5.599 |
| 2013 |
20.2 |
5.597 |
| 2014 |
20.2 |
5.594 |
| 2015 |
20.2 |
5.591 |
| 2016 |
20.2 |
5.588 |
| 2017 |
20.2 |
5.585 |
| 2018 |
20.2 |
5.583 |
| 2019 |
20.2 |
5.580 |
| 2020 |
20.2 |
5.577 |
| 2021 |
20.1 |
5.574 |
| 2022 |
20.1 |
5.572 |
| 2023 |
20.1 |
5.569 |
| 2024 |
20.1 |
5.566 |
| 2025 |
20.1 |
5.563 |
| 2026 |
20.1 |
5.561 |
| 2027 |
20.1 |
5.558 |
| 2028 |
20.0 |
5.555 |
| 2029 |
20.0 |
5.552 |
| 2030 |
20.0 |
5.549 |
|
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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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