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 |
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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 |
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Obs |
8 |
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Pa first |
340 |
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Pa last |
345.2 |
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P.A. Now (θ) |
345.2° |
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Sep first |
4.8 |
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Sep last |
3.591 |
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Sep. Now (ρ) |
3.591" |
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Mag pri |
14.10 |
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Mag sec |
15.50 |
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delta mag (ΔM) |
1.4 |
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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) |
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rPM=0.01 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
Iot Vir |
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Var name |
NSV6604 Vir |
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Spectr |
F7V |
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Constellation |
Ursa Minor |
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SAO |
139824 |
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HIP |
69701 |
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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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