discov_num |
notes |
refcode |
STF2758 |
61 Cyg. According to R.G. Aitken, this was discovered in 1753 by |
A__1935f |
|
Bradley. Premature orbits have been computed for AB. This is an |
Bdy1832A |
|
example of a binary known by its common parallax and proper motion |
|
|
rather than the orbital motion, which has completed approximately |
|
|
one-sixth of an orbit in the past 200 years. The extremely large |
|
|
proper motion of this pair has led to some confusion in identification |
|
|
of others stars measured relative to the primary. Precise epoch-2000 |
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|
coordinates and UCAC2 catalog cross-identifications are listed below: |
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|
A = UCAC2 50084730 = 2106539+384457 pm = +5328 +3258 |
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|
B = UCAC2 50084732 = 2106552+384431 pm = +5267 +3143 |
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|
C = UCAC2 45407969 = 2106142+383502 +007+006 |
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|
D = UCAC2 45407870 = 2105597+384133 +002-006 |
|
|
E = UCAC2 45408060 = 2106306+384532 +012-007 |
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|
F = UCAC2 45408067 = 2106322+384246 +019-002 |
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|
G = UCAC2 45408111 = 2106413+384325 +000-002 |
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|
H = UCAC2 45408157 = 2106502+384551 -004-006 |
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|
The Aa pair was renamed AF. The G and H components were both initially |
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|
believed to be the C component. B is BD+38@4344. |
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|
AB: Statistically the same parallax within the errors would indicate |
|
|
the components are physical. |
|
|
AB: H 4 18. |
MEv2010 |
|
An estimated mass has been used by Josties (1981) to compute the |
Jti1981 |
|
otherwise nearly indeterminate orbit; thus the orbit should not be |
|
|
used to compute the mass. The RV difference from which the ascending |
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|
node is inferred is quite small. Various small variations, formerly |
|
|
suspected in the period range of about 5-10 years, are absent in the |
|
|
strong photographic coverage of the last decades. |
|
|
See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
|
Resulting component masses are 0.74 +/- 0.13 and 0.46 +/- 0.07 Msun. |
PkO2006b |
|
HIP 104214. See Allen et al. (2000) for information on metallicity, |
AlC2000 |
|
age, galactic orbital parameters, etc. |
|
|
CHARA Array Limb-darkened diameter of A,B: |
CIA2008e |
|
1.775 +/- 0.013, 1.581 +/- 0.022 mas. |
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|
R = 0.665 +/- 0.005, 0.595 +/- 0.008 \rsun, |
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|
L = 0.153 +/- 0.010, 0.085 +/- 0.007 \lsun, |
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|
Teff = 4400 +/- 100, 4040 +/- 80 K. |
|
|
AB: NLTT 50559/50560 |
Chm2004 |
|
BC: Optical pair, based on study of relative motion of the components |
|
|
using the method of apparent motion parameters. |
Kiy2008 |
|
Inclination of orbit flipped by 180 deg in accordance with available |
Pko2017b |
|
data by cataloger. |
|
|
Analysis of long term photometric variability of both components |
PkO2019a |
|
reliable photometric variability with periods of about 15 years and |
|
|
variation of 0.05(0.02) magnitudes for both components as well as a |
|
|
9 year variation for B. |
|
HZE 4 |
Heinze et al. (2010) determine that the J, K, and L components are all |
|
|
background objects. |
Hze2010 |
STF2758 |
AC, AE, AF, AG, AH: Rectilinear solutions by Mason & Hartkopf (2016). |
Msn2016a |
SMR 1 |
AI: Rectilinear solution by Mason & Hartkopf (2016). |
Msn2016a |
SMR 40 |
AO, AP: Rectilinear solutions by Mason & Hartkopf (2016). |
Msn2016a |
STF2758 |
BC: Rectilinear solution by Mason & Hartkopf (2016). |
Msn2016a |
FYM 106 |
BN: Rectilinear solution by Mason & Hartkopf (2016). |
Msn2016a |
refcode |
metd |
author |
reference |
A__1935f |
- |
Aitken, R.G. |
1935QB821.A3....... |
A__1935f |
|
The Binary Stars, 1935 |
|
AlC2000 |
Po - |
Allen, C., Poveda, A., & Herrera, M |
2000A&A...356..529A |
AlC2000 |
|
A&A 356, 529, 2000 |
|
Baz1989d |
- |
Baize, P. & Petit, M. |
1989A&AS...77..497B |
Baz1989d |
|
A&AS 77, 497, 1989 |
|
Bdy1832A |
Ma - |
Bradley, J. |
1833MmRAS...5...13H |
Bdy1832A |
|
Memoirs, Oxford, 1832 |
|
Bdy1832A |
|
(as cited by Herschel, MemRAS 5, 13, 1833) |
|
Chm2004 |
E - |
Chaname, J. & Gould, A. |
2004ApJ...601..289C |
Chm2004 |
|
ApJ 601, 289, 2004 |
|
Chm2004 |
|
(Photometry, coordinates, and astrometry from rNLTT. Astrometry from early |
|
Chm2004 |
|
versions of 2MASS and UCAC, with date given only as "circa 2000". Measures |
|
Chm2004 |
|
identical to discovery observations - predominantly close pairs - were assumed |
|
Chm2004 |
|
not new observations, so not included in WDS. Similar concerns when primary and |
|
Chm2004 |
|
secondary magnitudes or proper motions were the same.) |
|
CIA2008e |
not j |
Kervella, P., Merand, A., Pichon, B., Thevenin, F., Heiter, U., Bigot, L., |
2008A&A...488..667K |
CIA2008e |
|
ten Brummelaar, T.A., McAlister, H.A., Ridgway, S.T., Turner, N., Sturmann, J., |
. |
CIA2008e |
|
Sturmann, L., Goldfinger, P.J. & Farrington, C. |
. |
CIA2008e |
|
A&A 488, 667, 2008 |
. |
Hze2010 |
A j |
Heinze, A.N., Hinz, P.M., Sivanandam, S., Kenworthy, M., Meyer, M., & Miller, D. |
2010ApJ...714.1551H |
Hze2010 |
|
ApJ 714, 1551, 2010 |
|
Kiy2008 |
- |
Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. |
2008SvAL...32..405K |
Kiy2008 |
|
SvAL 34, 405, 2008 |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
Msn2016a |
lin - |
Mason, B.D. & Hartkopf, W.I. |
2016IAUDS.189....1M |
Msn2016a |
|
Inf. Circ. 189, 1, 2016 |
|
PkO2006b |
orb - |
Gorshanov, D.L., Shakht, N.A. & Kisselev, A.A. |
2006SvA....49..386K |
PkO2006b |
|
SvA 49, 386, 2006 |
|
PkO2017b |
Po - |
Shakht, N.A., Gorshanov, D.L. & Vasilkova, O.O. |
2017Ap.....60..507S |
PkO2017b |
+orb |
Astrophysics 60, 507, 2017 |
|
PkO2017b |
|
Note: Published J2000 PA precessed to epoch of observation for consistency. |
|