13008+1223 BEU  16AB (DT Vir)

 
 
13h 00m 46.58s +12 22' 32.6" P.A. 307.00 sep 0.2 mag 9.75, Sp M0.5 dist. 11.69 pc (38.13 l.y.)
 
 
Coord 2000
13008+1223
Discov num
BEU  16
Comp
AB
Coord arcsec 2000
13 00 46.58 +12 22 32.6
Date first
2000
Date last
2006
Obs
4
Pa first
82
Pa last
307
P.A. Now (θ)
307°
Sep first
0.5
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
9.75
Mag sec
delta mag (ΔM)
Spectral class
M0.5 (red)
Pri motion ra
-619
Sec motion ra
Pri motion dec
-017
Sec motion dec
Notes
N O (See Notes, Orbital solution)
Visually invisible, K-band or other infrared star This double is physical.
 
 
13008+1223 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show DT Vir 13008+1223 BEU 16 AB 2000 2006 4 307 0.2 9.75 Y <===
Show 13008+1223 GDM 1 AC 2003 2008 2 220 102.1 9.75 25.00 15.25
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
307.4
Precise sep
0.24
Var name
DT Vir
Constellation
Virgo
HIP
63510
Tycho2
0886-00839-1
GL
Gl 494
BD
BD+13 2618
Distance
11.69
Distance ly
38.13
last precise pa
307.4
last precise sep
0.24
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.5y Periastron (T)1983.3y Semi-major axis (a)0.051a
Eccentricity (e)0 Inclination (i)144° Longitude of periastron (ω)
Node (Ω)16° Note Grade9(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.045 327.3
2001 0.042 299.0
2002 0.042 268.5
2003 0.045 240.9
2004 0.049 217.6
2005 0.051 197.0
2006 0.050 176.5
2007 0.046 153.6
2008 0.042 126.4
2009 0.041 96.1
2010 0.044 67.4
2011 0.048 43.1
2012 0.051 22.0
2013 0.050 1.8
2014 0.047 339.7
2015 0.043 313.6
2016 0.041 283.7
2017 0.043 254.1
2018 0.047 228.7
2019 0.051 207.1
2020 0.051 186.9
2021 0.048 165.6
2022 0.044 140.6
2023 0.041 111.4
2024 0.043 81.2
2025 0.046 54.7
2026 0.050 32.3
2027 0.051 12.0
2028 0.049 351.1
2029 0.045 327.3
2030 0.042 299.0

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






wds13008%2B1223r.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
13008+1223 BEU 16 AB 2000 1 82 0.5 9.75   M0.5 N D 130046.58+122232.6
13008+1223 BEU 16 AB 2006 3 307 0.2 9.75   M0.5 NO 130046.58+122232.6

If you need more information about this double, apply for a data request form to the WDS.
 
 
WDS 13008+1223 BEU 16AB - DT VIR : NOTES
 
 
discov_num notes refcode
GDM 1 AC: GJ 494 + ULAS J130041.72+122114.7. Primary is flare star DT Vir.
Goldman et al. (2010 derive a spectral type T8.9 +0.2/-0.2 for this
distant companion to Ross 458. Gdm2010
Based on colors and absolute magnitudes, Scholz et al. (2010) derive a
spectral type T7.0 +/- 1.0 for the C component. Soz2010b
 
 
REFERENCES
 
 
refcode metd author reference
Gdm2010 E+ w Goldman, B., Marsat, S., Henning, T., Clemens, C., & Greiner, J. 2010MNRAS.405.1140G
Gdm2010 +C+ MNRAS 405, 1140, 2010
Gdm2010 (Add'l photometry and astrometry extracted from 2MASS, SDSS, UKIDSS by editor)
Hei1994a orb - Heintz, W.D. 1994AJ....108.2338H
Hei1994a AJ 108, 2338, 1994
Soz2010b Ek - Scholz, R.-D. (Additional photometry and astrometry extracted 2010A&A...515A..92S
Soz2010b +Es A&A 515, A92, 2010 from SDSS and UKIDSS by editor)
 
 
DISCOVERER
 
 
discov author
GDM Goldman, B., Marsat, S., Henning, T., Clemens, C., & Greiner, J.

 
 
WDS 13008+1223 BEU 16AB - DT VIR : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 13008+1223 BEU 16AB - DT VIR : MEASURES
 
 
No records found.

 
 
WDS 13008+1223 BEU 16AB - DT Vir : Virtual Eyepiece
 
 

13008+1223 A mag 9.75 Sp M0.5 13008+1223 B sep 0.2 P.A. 308.10 13008+1223 C sep 101.1 P.A. 219.50 mag 25 Sp T8 virtual eyepiece
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Radius:
 
 
WDS 13008+1223 BEU 16AB - DT Vir : Aladin DSS image @ 13h 00m 46.58s +12 22' 32.6"