13169-3436 I 1567 (HD 115311)

 
 
13h 16m 53.63s -34° 35' 54.2" P.A. 84.00 sep 0.3 mag 8.55,9.55 Sp G5V dist. 43.14 pc (140.72 l.y.)
 
 
Coord 2000 13169-3436 Discov num I  1567 Comp Coord arcsec 2000 13 16 53.63 -34 35 54.2
Date first 1897 Date last 2021 Obs 52
Pa first 302 Pa last 84.4 P.A. Now (θ) 74.8°
Sep first 0.4 Sep last 0.259 Sep. Now (ρ) 0.253"
Mag pri 8.55 Mag sec 9.55 delta mag (ΔM) 1 Spectral class G5V (yellow)
Pri motion ra -101 Sec motion ra
Pri motion dec -008 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 115311 Constellation Centaurus SAO 204311 HIP 64804
Tycho2 7271-00979-1 Gaia DR2 6167410451071011968 HD 115311 CD CD-33 8934
CP CP-33 3381 Distance 43.14 Distance ly 140.72
 
 
ORBITAL ELEMENTS
 
 
Period (P)40.88y± 0.18 Periastron (T)2006.4y± 0.01 Semi-major axis (a)0.326a± 0
Eccentricity (e)0.457± 0.002 Inclination (i)121.6°± 0.1 Longitude of periastron (ω)274°± 0.4
Node (Ω)145.5°± 0.2 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 334.1 0.297
2001 328.9 0.280
2002 322.8 0.255
2003 315.1 0.221
2004 304.1 0.178
2005 285.2 0.130
2006 247.9 0.095
2007 201.0 0.107
2008 173.7 0.152
2009 159.2 0.197
2010 149.8 0.234
2011 142.7 0.260
2012 136.7 0.278
2013 131.2 0.289
2014 126.1 0.294
2015 121.1 0.295
2016 116.0 0.293
2017 110.9 0.289
2018 105.6 0.283
2019 100.0 0.276
2020 94.1 0.270
2021 88.0 0.263
2022 81.5 0.257
2023 74.8 0.253
2024 67.9 0.250
2025 60.9 0.248
2026 53.8 0.249
2027 46.8 0.251
2028 40.0 0.255
2029 33.4 0.261
2030 27.1 0.267


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


 
  


wds13169-3436a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 13169-3436 I 1567 (HD 115311) : NOTES
 
 
discov_num notes refcode
I 1567 Also known as SEE 171.
Hipparcos parallax 23.18 +/- 1.10 mas. Dynamical parallax 22.7 mas,
masses 0.96 and 0.84 Msun. I 1567 has a well-established orbit by
Heintz (1986) which is corrected here to better match the new speckle Hei1986a
data. Heintz notes that this pair is a "puzzling case" because of some
very discordant historical measures; these deviant points were ignored
in the calculation. Tok2012b
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 1.20 +/- 0.36, 1.81, and 0.95 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Hei1986a orb - Heintz, W.D. 1986A&AS...64....1H
Hei1986a A&AS 64, 1, 1986
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2012b S j Tokovinin, A. 2012AJ....144...56T
Tok2012b +orb AJ 144, 56, 2012
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
DISCOVERER
 
 
idgroup discov author
1 I Innes, R.T.A.
5 I MNRAS 57, 533, 1897 (data also in I__1897b,
5 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13169-3436 I 1567 1991 43 12 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2009 44 156 0.2 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2012 47 136 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2013 48 130 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2014 49 125 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2017 50 107 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2019 51 99 0.3 8.55 9.55 G5V NO 131653.63-343554.2
13169-3436 I 1567 2021 52 84 0.3 8.55 9.55 G5V NO 131653.63-343554.2

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WDS 13169-3436 I 1567 (HD 115311) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 13169-3436 I 1567 (HD 115311) : MEASURES
 
 
No records found.

 
 
WDS 13169-3436 (HD 115311) : VIRTUAL EYEPIECE
 
 

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WDS 13169-3436 (HD 115311) : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.