Triple star system in the constellation of Andromeda
ADS 48 Observation dataEpoch J2000 Equinox J2000 Constellation Andromeda [ 1] ADS 48 A Right ascension 00h 05m 41.0219s [ 2] Declination +45° 48′ 43.545″[ 2] Apparent magnitude (V)8.826[ 3] ADS 48 B Right ascension 00h 05m 41.0028s [ 4] Declination +45° 48′ 37.354″[ 4] Apparent magnitude (V)8.995[ 3] Characteristics ADS 48 A Spectral type K6V[ 5] B−Vcolor index +1.344[ 3] ADS 48 B Spectral type M0.5V[ 5] B−Vcolor index +1.345[ 3] Astrometry Radial velocity (Rv )± 0.1[ 6] km/s Proper motion (μ)RA: ± 1.02[ 7] mas /yr Dec.: ± 1.04[ 7] mas /yr Parallax (π)88.44± 1.56 mas [ 7] Distance 36.9 ± 0.7 ly pc ) Absolute magnitude (MV )+7.93[ 1] Orbit [ 8] Period (P)± 120yr Semi-major axis (a)± 10 AU Eccentricity (e)± 0.08Inclination (i)± 2.3Longitude of the node (Ω)± 2.8Periastron epoch (T)± 30Argument of periastron (ω)± 31Details ADS 48 A Mass 0.50[ 9] M ☉ ADS 48 B Mass 0.53[ 9] M ☉ Other designations HD 38,HIP 473,GJ 4,CCDM J00057+4548AB,WDS J00057+4549ABADS 48 A :HD 38A,SAO 36046,GC 71,GJ 4 A,CCDM J00057+4548A,WDS J00057+4549AADS 48 B :HD 38B,SAO 36048,GC 72,GJ 4 B,CCDM J00057+4548B,WDS J00057+4549BDatabase references SIMBAD AB A B
ADS 48 is abinary system in theconstellation ofAndromeda .
The components haveapparent visual magnitudes of 8.826 and 8.995.[ 3] K-type main-sequence star , while component B is anM-type main-sequence star (red dwarf).[ 5] period of 550 years and a separation ofAU [ 8]
Multiple stars lie close to ADS 48 in the line of sight, and have been considered components C, D and E of the system, but are background objects. ADS 48 F (Gliese 2 ) is at a similar distance from the pair and share similarproper motions , but is moving faster than theescape velocity of the pair and thus is not gravitationally bound.[ 10] M ☉ [ 9] [ 8]
^a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters 38 (5): 331.arXiv :1108.4971 Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 . XHIP record for this object atVizieR .^a b Brown, A. G. A. ; et al. (Gaia collaboration ) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source atVizieR .^a b c d e Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy & Astrophysics .355 :L27– L30.Bibcode :2000A&A...355L..27H . ^a b Brown, A. G. A. ; et al. (Gaia collaboration ) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 Gaia DR2 record for this source atVizieR .^a b c Tamazian, Vakhtang S.; Docobo, José A.; Melikian, Norair D.; Karapetian, Arthur A. (2006)."MK Classification and Dynamical Masses for Late-Type Visual Binaries" .Publications of the Astronomical Society of the Pacific .118 (844): 814.Bibcode :2006PASP..118..814T .doi :10.1086/504881 ^ Nidever, David L.; Marcy, Geoffrey W.; Butler, R. Paul; Fischer, Debra A.; Vogt, Steven S. (2002). "Radial Velocities for 889 Late-Type Stars".The Astrophysical Journal Supplement Series .141 (2):503– 522.arXiv :astro-ph/0112477 Bibcode :2002ApJS..141..503N .doi :10.1086/340570 .S2CID 51814894 . ^a b c van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction".Astronomy and Astrophysics .474 (2):653– 664.arXiv :0708.1752 Bibcode :2007A&A...474..653V .doi :10.1051/0004-6361:20078357 .S2CID 18759600 . Vizier catalog entry Archived 2019-04-02 at theWayback Machine ^a b c Kiyaeva, O. V.; Zhuchkov, R. Ya; Izmailov, I. S. (2021). "Investigation of relative motion in the triple system ADS 48 on the basis of Gaia DR2 and Pulkovo 26-inch refractor observations".Astronomical and Astrophysical Transactions .32 (2):89– 98.Bibcode :2021A&AT...32...89K .ISSN 1055-6796 . ^a b c Kiyaeva, O. V. (2001). "An astrometric study of the triple star ADS 48".Astronomy Letters .21 (6):391– 397.Bibcode :2001AstL...27..391K .doi :10.1134/1.1374678 .S2CID 121012446 . ^ Cvetković, Z.; et al. (2012)."System ADS 48: Visual Binary or Multiple System" .The Astronomical Journal .144 (3) 80.Bibcode :2012AJ....144...80C doi :10.1088/0004-6256/144/3/80 S2CID 120045704 .
