12335+0901 REU   1

 
 
12h 33m 17.36s +09 01' 15.8" P.A. 310.50 sep 0.7 mag 12.60,12.60 Sp M5.5V
 
 
Coord 2000
12335+0901
Discov num
REU   1
Comp
Coord arcsec 2000
12 33 17.36 +09 01 15.8
Date first
1938
Date last
2019
Obs
83
Pa first
322
Pa last
134
P.A. Now (θ)
310.5°
Sep first
0.7
Sep last
0.9
Sep. Now (ρ)
0.71"
Mag pri
12.60
Mag sec
12.60
delta mag (ΔM)
0
Spectral class
M5.5V (red)
Pri motion ra
-173
Sec motion ra
Pri motion dec
+022
Sec motion dec
Notes
N O P (See Notes, Orbital solution, 100-year proper motion)
Visually invisible, K-band or other infrared star This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
134.4
Precise sep
0.937
Constellation
Virgo
last precise pa
134.4
last precise sep
0.937
 
 
ORBITAL ELEMENTS
 
 
Period (P)15.812y Periastron (T)2008.12y Semi-major axis (a)0.91a
Eccentricity (e)0.301 Inclination (i)102.8° Longitude of periastron (ω)347.7°
Node (Ω)143.2° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2019
label rho theta
2000 1.145 326.6
2001 1.175 323.7
2002 1.123 320.7
2003 0.984 317.1
2004 0.760 311.9
2005 0.461 300.7
2006 0.179 246.1
2007 0.372 163.8
2008 0.608 147.2
2009 0.607 137.2
2010 0.397 121.3
2011 0.196 61.7
2012 0.380 356.0
2013 0.657 340.1
2014 0.892 333.4
2015 1.062 329.2
2016 1.157 326.0
2017 1.172 323.1
2018 1.103 320.1
2019 0.949 316.3
2020 0.709 310.5
2021 0.399 296.6
2022 0.174 221.3
2023 0.429 159.1
2024 0.628 145.3
2025 0.579 135.0
2026 0.347 115.9
2027 0.202 42.5
2028 0.433 351.4
2029 0.706 338.5
2030 0.930 332.5

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
 
grafico orbita






wds12335%2B0901b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12335+0901 REU 1 2004 60 309 0.7 12.60 12.60 NODP 123318.43+090113.9
12335+0901 REU 1 2008 56 141 0.6 12.60 12.60 NODP 123318.43+090113.9
12335+0901 REU 1 2010 57 118 0.4 12.60 12.60 NODP 123318.43+090113.9
12335+0901 REU 1 2012 62 169 0.4 12.60 12.60 M5.5V NO P 123318.43+090113.9
12335+0901 REU 1 2014 81 152 0.9 12.60 12.60 M5.5V NO P 123317.36+090115.8
12335+0901 REU 1 2019 83 134 0.9 12.60 12.60 M5.5V NO P 123317.36+090115.8

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