06106-2152 NAJ 1
06h 10m 34.62s -21° 51' 52.5" P.A. 180.00 sep 4.9 mag 8.35,17.10 Sp M1.5V+T6 dist. 5.75 pc (18.76 l.y.)
| Coord 2000 |
06106-2152 |
|
Discov num |
NAJ 1 |
|
Comp |
|
|
Coord arcsec 2000 |
06 10 34.62 -21 51 52.5 |
|
| Date first |
1994 |
|
Date last |
2021 |
|
Obs |
14 |
|
| Pa first |
163 |
|
Pa last |
179.7 |
|
P.A. Now (θ) |
179.7° |
|
| Sep first |
7.8 |
|
Sep last |
4.891 |
|
Sep. Now (ρ) |
4.891" |
|
| Mag pri |
8.35 |
|
Mag sec |
17.10 |
|
delta mag (ΔM) |
8.75 |
|
Spectral class |
M1.5V+T6 (red/brown dwarf) |
|
| Pri motion ra |
-136 |
|
Sec motion ra |
|
|
| Pri motion dec |
-719 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lepus |
|
SAO |
171334 |
|
HIP |
29295 |
|
Tycho2 |
5945-00765-1 |
|
| HD |
42581 |
|
GL |
Gl 229 |
|
BD |
BD-21 1377 |
|
Distance |
5.75 |
|
| Distance ly |
18.76 |
|
ORBITAL ELEMENTS
| Period (P) | 86909d (237.94y) | ± 1900 |
Periastron (T) | 66912d (2042.075y) | ± 97 |
Semi-major axis (a) | 5.78a | ± 0.07 |
| Eccentricity (e) | 0.851 | ± 0.008 |
Inclination (i) | 7.7° | ± 7.6 |
Longitude of periastron (ω) | -9° | ± 140 |
| Node (Ω) | -29° | ± 140 |
Notes | n | |
Reference | Bdt2021b | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
164.5 |
7.426 |
| 2001 |
165.0 |
7.329 |
| 2002 |
165.5 |
7.231 |
| 2003 |
166.0 |
7.131 |
| 2004 |
166.5 |
7.028 |
| 2005 |
167.1 |
6.924 |
| 2006 |
167.6 |
6.817 |
| 2007 |
168.2 |
6.708 |
| 2008 |
168.8 |
6.597 |
| 2009 |
169.4 |
6.483 |
| 2010 |
170.1 |
6.367 |
| 2011 |
170.7 |
6.249 |
| 2012 |
171.4 |
6.128 |
| 2013 |
172.1 |
6.004 |
| 2014 |
172.9 |
5.878 |
| 2015 |
173.6 |
5.748 |
| 2016 |
174.5 |
5.616 |
| 2017 |
175.3 |
5.481 |
| 2018 |
176.2 |
5.342 |
| 2019 |
177.2 |
5.200 |
| 2020 |
178.2 |
5.055 |
| 2021 |
179.2 |
4.906 |
| 2022 |
180.3 |
4.754 |
| 2023 |
181.5 |
4.597 |
| 2024 |
182.8 |
4.436 |
| 2025 |
184.2 |
4.271 |
| 2026 |
185.7 |
4.101 |
| 2027 |
187.4 |
3.927 |
| 2028 |
189.1 |
3.747 |
| 2029 |
191.1 |
3.562 |
| 2030 |
193.3 |
3.370 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
