ADS 48

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ADS 48
Observation data
Epoch J2000      Equinox J2000
Constellation Andromeda
ADS 48 A
Right ascension 00h 05m 41.0129s[1]
Declination +45° 48′ 43.491″[1]
Apparent magnitude (V) 8.826[1]
ADS 48 B
Right ascension 00h 05m 40.342s[2]
Declination +45° 48′ 38.73″[2]
Apparent magnitude (V) 8.995[2]
Characteristics
ADS 48 A
Spectral type K6V[1]
U−B color index +1.29[1]
B−V color index +1.44[1]
ADS 48 B
Spectral type M0.5V[2]
U−B color index +1.20[2]
B−V color index +1.45[2]
ADS 48 F
Spectral type M2Ve[3]
U−B color index +1.18[4]
B−V color index +1.50[4]
Astrometry
ADS 48 AB
Radial velocity (Rv) 1.49 km/s
Proper motion (μ) RA: 887.48[5] mas/yr
Dec.: -152.02[5] mas/yr
Parallax (π) 88.44 ± 1.56[5] mas
Distance 36.9 ± 0.7 ly
(11.3 ± 0.2 pc)
ADS 48 F
Radial velocity (Rv) -0.39 km/s
Proper motion (μ) RA: 870.19[5] mas/yr
Dec.: -150.45[5] mas/yr
Parallax (π) 88.88 ± 1.42[5] mas
Distance 36.7 ± 0.6 ly
(11.3 ± 0.2 pc)
Orbit[6]
Primary A
Companion B
Period (P) 509.65 ± 96.99 yr
Semi-major axis (a) 6.21 ± 0.77″
Eccentricity (e) 0.22 ± 0.04
Inclination (i) 54.9 ± 2.4°
Longitude of the node (Ω) 13.5 ± 2.3°
Periastron epoch (T) 2115.80 ± 123.47
Argument of periastron (ω)
(secondary)
267.2 ± 27.4°
Details
ADS 48 A
Mass 0.50[6] M
ADS 48 B
Mass 0.53[6] M
ADS 48 F
Radius 0.618[7] R
Temperature 3484[7] K
Other designations
HD 38, HIP 473, GJ 4, CCDM J00057+4548AB, WDS J00057+4549AB
ADS 48 A: HD 38A, SAO 36046, GC 71, GJ 4 A, CCDM J00057+4548A, WDS J00057+4549A
ADS 48 B: HD 38B, SAO 36048, GC 72, GJ 4 B, CCDM J00057+4548B, WDS J00057+4549B
ADS 48 F: HIP 428, GJ 2, CCDM J00057+4548F, WDS J00057+4549F
Database references
SIMBAD AB
A
B
F

ADS 48 is a multiple star system in the constellation of Andromeda consisting of 7 stars. The components, in order from A to G, have apparent visual magnitudes of 8.83,[1] 9.00,[2] 13.30,[8] 12.53,[9] 11.68,[10] 9.97,[3] and 13.00.[11]

ADS 48A and ADS 48B are in orbital motion around each other while ADS 48F is a common proper motion companion. The others are unassociated background stars.[12]

References[edit]

  1. ^ a b c d e f g GJ 4 A – Star in double system, database entry, SIMBAD. Accessed 13 July 2013
  2. ^ a b c d e f g GJ 4 B – Star in double system, database entry, SIMBAD. Accessed 13 July 2013
  3. ^ a b GJ 2 – Star in double system, database entry, SIMBAD. Accessed 13 July 2013.
  4. ^ a b Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Bibcode:1986EgUBV........0M. 
  5. ^ a b c d e f van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  6. ^ a b c Kiyaeva, O. V. (2001). "An astrometric study of the triple star ADS 48". Astronomy Letters. 21: 391–397. Bibcode:2001AstL...27..391K. doi:10.1134/1.1374678. 
  7. ^ a b Houdebine, E. R. (2010). "Observation and modelling of main-sequence star chromospheres - XIV. Rotation of dM1 stars". Monthly Notices of the Royal Astronomical Society. 407 (3): 1657–1673. Bibcode:2010MNRAS.407.1657H. doi:10.1111/j.1365-2966.2010.16827.x. 
  8. ^ GSC 03246-01561 – Composite object, database entry, SIMBAD. Accessed 13 July 2013
  9. ^ GSC 03246-01146 – Star, database entry, SIMBAD Accessed 13 July 2013
  10. ^ GSC 03246-01100 – Star, database entry, SIMBAD Accessed 13 July 2013
  11. ^ GSC 03246-00320 – Star, database entry, SIMBAD Accessed 13 July 2013
  12. ^ 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.