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41 Lyncis: Wikis

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41 Lyncis or HD 81688
Observation data
Epoch J2000      Equinox J2000
Constellation Ursa Major
Right ascension 09h 28m 39.9893s
Declination +45° 36′ 05.339″
Apparent magnitude (V) 5.413
Characteristics
Spectral type K0III-IV
U-B color index 0.74
B-V color index 0.98
Astrometry
Radial velocity (Rv) 38.5 ± 2 km/s
Proper motion (μ) RA: -6.40 ± 0.73 mas/yr
Dec.: -128.20 ± 0.42 mas/yr
Parallax (π) 11.33 ± 0.84 mas
Distance 290 ± 20 ly
(88 ± 7 pc)
Absolute magnitude (MV) 6.396
Details
Mass 2.1 M
Radius 13 R
Surface gravity (log g) 0.347 g
Luminosity 77.3 L
Temperature 4753 ± 15 K
Metallicity -35.9 ± 2 %
Equatorial [ g ] 3.4 m/s2
Orbit
Companion CCDM J09287+4536 B
S 598
Semimajor axis (a) 77.3"
Inclination (i) 162°
Orbit
Companion CCDM J09287+4536 C
S 598
Semimajor axis (a) 83.5"
Inclination (i) 80°
Other designations
HD 81688, HIP 46471, HR 3743, GC 13051, SAO 42876, CCDM J09287+4536.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD data

41 Lyncis (also called HD 81688) is a star located in Ursa Major constellation, despite it designation genitive Lyncis that should have been located in Lynx constellation. It is an orange giant with magnitude 5.4 at 288 light years.

Components

NAME Right ascension Declination Apparent magnitude (V) Spectral type Database references
BDS 5090 A
BDS 5090 B (HD 81704) 09h 28m 42.2279s +45° 34' 57.497 7.4 F9IV Simbad
BDS 5090 C (BD+46 1509C) 09h 28m 47.7s +45° 36' 25 9.8 Simbad

Planet

41 Lyncis b, a 2.7 Jupiter mass planet is found orbiting around the star, it was discovered in 19 February 2008.

The 41 Lyncis system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity
b 2.7 MJ 0.81 184.02 ± 0.18 0

External links

Coordinates: Sky map 09h 28m 40s, +45° 36′ 05″

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