17129+4220 BUP 176
17h 12m 55.08s +42° 19' 54.5" P.A. 300.00 sep 129.4 mag 10.26,9.92 Sp M1V dist. 25.23 pc (82.3 l.y.)
Coord 2000 |
17129+4220 |
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Discov num |
BUP 176 |
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Comp |
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Coord arcsec 2000 |
17 12 55.08 +42 19 54.5 |
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Date first |
1912 |
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Date last |
2005 |
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Obs |
11 |
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Pa first |
279 |
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Pa last |
300.2 |
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P.A. Now (θ) |
300.2° |
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Sep first |
209.4 |
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Sep last |
129.36 |
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Sep. Now (ρ) |
129.36" |
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Mag pri |
10.26 |
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Mag sec |
9.92 |
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delta mag (ΔM) |
0.34 |
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Spectral class |
M1V (red) |
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Pri motion ra |
-101 |
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Sec motion ra |
-001 |
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Pri motion dec |
-035 |
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Sec motion dec |
+000 |
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Notes |
N
L
P
(See Notes, Linear solution, 100-year proper motion) |
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rPM=0.991
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
Constellation |
Hercules |
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HIP |
84223 |
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Tycho2 |
3081-01154-1 |
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GL |
GJ 1213 |
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BD |
BD+42 2810 |
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Distance |
25.23 |
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Distance ly |
82.3 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 17129+4220 GJ 1213 |
coord_arcsec_2000 | 171255.90+421957.4 |
Period (P) | 7.809y | ± 4.791 |
Periastron (T) | 1995.602y | ± 4.446 |
Semi-major axis (a) | 24.4m | ± 10.3 |
Eccentricity (e) | 0.41 | ± 0.28 |
Inclination (i) | 111° | ± 10 |
Longitude of periastron (ω) | 103° | ± 72 |
Node (Ω) | 175° | ± 98 |
Notes | | |
Reference | Gln2007 | |
Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
214.5 |
0.018 |
2001 |
193.4 |
0.024 |
2002 |
178.6 |
0.024 |
2003 |
146.6 |
0.010 |
2004 |
0.1 |
0.017 |
2005 |
336.5 |
0.020 |
2006 |
304.5 |
0.014 |
2007 |
247.9 |
0.013 |
2008 |
209.3 |
0.019 |
2009 |
190.5 |
0.024 |
2010 |
175.4 |
0.023 |
2011 |
117.9 |
0.006 |
2012 |
354.7 |
0.019 |
2013 |
331.9 |
0.019 |
2014 |
295.2 |
0.013 |
2015 |
238.0 |
0.014 |
2016 |
204.9 |
0.020 |
2017 |
187.7 |
0.025 |
2018 |
171.7 |
0.021 |
2019 |
60.0 |
0.006 |
2020 |
350.1 |
0.020 |
2021 |
326.8 |
0.018 |
2022 |
284.7 |
0.012 |
2023 |
229.4 |
0.015 |
2024 |
200.9 |
0.021 |
2025 |
184.9 |
0.025 |
2026 |
167.2 |
0.018 |
2027 |
24.5 |
0.009 |
2028 |
345.9 |
0.020 |
2029 |
321.0 |
0.017 |
2030 |
273.3 |
0.012 |
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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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