14180+7032 LEP 140 (Iot Vir)
14h 17m 58.06s +70° 31' 47.5" P.A. 345.00 sep 3.6 mag 14.10,15.50 dist. 22.24 pc (72.55 l.y.)
| Coord 2000 |
14180+7032 |
|
Discov num |
LEP 140 |
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Comp |
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Coord arcsec 2000 |
14 17 58.06 +70 31 47.5 |
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| Date first |
1955 |
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Date last |
2017 |
|
Obs |
8 |
|
| Pa first |
340 |
|
Pa last |
345.2 |
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P.A. Now (θ) |
345.2° |
|
| Sep first |
4.8 |
|
Sep last |
3.591 |
|
Sep. Now (ρ) |
3.591" |
|
| Mag pri |
14.10 |
|
Mag sec |
15.50 |
|
delta mag (ΔM) |
1.4 |
|
Spectral class |
|
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| Pri motion ra |
-141 |
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Sec motion ra |
-141 |
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| Pri motion dec |
+136 |
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Sec motion dec |
+134 |
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| Notes |
V
(Proper motion indicates physical) |
|
rPM=0.01 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Iot Vir |
|
Var name |
NSV6604 Vir |
|
Spectr |
F7V |
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Constellation |
Ursa Minor |
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| SAO |
139824 |
|
HIP |
69701 |
|
Tycho2 |
4982-01645-1 |
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Gaia DR2 |
1674198975199225344 |
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| HD |
124850 |
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HR |
5338 |
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GC |
19244 |
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GL |
Wo 9473 |
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| BD |
BD-05 3843 |
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Bayer |
Iota Virginis |
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Bayer name |
Iot Vir |
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FK5 |
525 |
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| Distance |
22.24 |
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Distance ly |
72.55 |
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Bayer greek |
ι Vir |
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Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Vir vs UMi)
ORBITAL ELEMENTS
| Period (P) | 55y | |
Periastron (T) | 1950.7y | ± 2.7 |
Semi-major axis (a) | 0.83a | ± 0.02 |
| Eccentricity (e) | 0.1 | ± 0.2 |
Inclination (i) | 60° | ± 9 |
Longitude of periastron (ω) | 336° | ± 27 |
| Node (Ω) | 3° | ± 20 |
Notes | | |
Reference | Gon2010 | |
| Equinox | | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
310.5 |
0.452 |
| 2001 |
320.6 |
0.495 |
| 2002 |
328.9 |
0.543 |
| 2003 |
335.9 |
0.591 |
| 2004 |
341.9 |
0.636 |
| 2005 |
347.1 |
0.675 |
| 2006 |
351.8 |
0.708 |
| 2007 |
356.1 |
0.733 |
| 2008 |
0.2 |
0.748 |
| 2009 |
4.2 |
0.754 |
| 2010 |
8.1 |
0.750 |
| 2011 |
12.2 |
0.737 |
| 2012 |
16.4 |
0.716 |
| 2013 |
21.0 |
0.687 |
| 2014 |
26.0 |
0.652 |
| 2015 |
31.6 |
0.613 |
| 2016 |
38.0 |
0.572 |
| 2017 |
45.4 |
0.530 |
| 2018 |
54.0 |
0.492 |
| 2019 |
64.0 |
0.460 |
| 2020 |
75.2 |
0.437 |
| 2021 |
87.2 |
0.428 |
| 2022 |
99.4 |
0.433 |
| 2023 |
111.0 |
0.451 |
| 2024 |
121.4 |
0.481 |
| 2025 |
130.4 |
0.520 |
| 2026 |
138.0 |
0.563 |
| 2027 |
144.6 |
0.610 |
| 2028 |
150.2 |
0.657 |
| 2029 |
155.0 |
0.702 |
| 2030 |
159.3 |
0.746 |
|
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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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