5 Serpentis (HIP 74975)

5 Serpentis is a white subgiant star in the constellation Serpens. At 83 light years away, it shines at an apparent visual magnitude of 5.04. 5 Serpentis is the primary component of a multiple-star system. The star's age is estimated to be 3.1 billion years but is certainly no less than 2.7 billion years and no greater than 3.6 billion years. The iron abundance of 5 Serpentis is -0.04 (91.2% of the Sun). It is moving through the Galaxy at a speed of 93.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 16,100 and 48,800 light years from the center of the Galaxy. It came closest to the Sun 153,000 years ago when it had brightened to magnitude 4.60 from a distance of 67 light years.

Sky position: RA 15h 19.3m, Dec +1░ 46.2'

Common designations: 5 Serpentis, HIP 74975, HD 136202, HR 5694

Glow-in-the-dark
Moon Calendar Magnet


Glows for hours and
will fascinate everyone!


Brightest stars in Serpens:
(list all)

11

|    4.32

)   Nu Serpentis

12

|    4.42

)   Lambda Serpentis

13

|    4.51

)   Iota Serpentis

14

|    4.62

)   Zeta Serpentis

15

|    4.62

)   Alya

16

|    4.74

)   Rho Serpentis

17

|    4.82

)   Pi Serpentis

18

|    4.82

)   Sigma Serpentis

19

|    4.98

)   Theta-2 Serpentis

20

|    5.04

)   5 Serpentis

21

|    5.09

)   36 Serpentis

22

|    5.15

)   10 Serpentis

23

|    5.16

)   Tau-1 Serpentis

24

|    5.20

)   59 Serpentis

25

|    5.21

)   Omega Serpentis

26

|    5.26

)   16 Serpentis

27

|    5.32

)   3 Serpentis

Location of 5 Serpentis circled
Map detail from Stars of the Northern Hemisphere
Hover over other bright stars to identify or click to jump.


Galactic Orbit of 5 Serpentis

(compared to the Sun)

Eccentricity: 50.4% vs. 16.0%

Angle φ : 89.4░ vs. 26.0░

Semi-major axis : 9,950 pc vs. 8,686 pc

Semi-minor axis: 8,594 pc vs. 8,574 pc

Focus-to-center: 5,014 pc vs. 1,388 pc

Semilatus rectum : 7,423 pc vs. 8,464 pc

Perigalacticon: 4,936 pc vs. 7,297 pc

Apogalacticon: 14,964 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for 5 Serpentis
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 229.82741616░ ▒0.24 mas 374.70 ▒0.70 mas/yr.
Declination: 1.76665619░ ▒0.17 mas -514.70 ▒0.70 mas/yr.
     
Galactic Longitude: 3.67571739░ -163.89 mas/yr.
Galactic Latitude: 46.45182036░ -615.19 mas/yr.

Parallax: 39.40 ▒ 0.29 mas


Spectrography

Spectral Type: F8IV 2001AJ....121.2148G.

Radial Velocity: 54.30 ▒0.10 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: -0.04 dex  2011A&A...525A..71W, 2009A&A...501..941H, 2005ApJS..161..444T, 2003PASP..115...22Y, 2000Priv.C........F, 1990ApJ...354..310B.
 



Photometry
 
band magnitude Abs. Mag.
U
B 5.58 3.56
V 5.04 3.02
R 4.80 2.78
I 4.50 2.48
J 4.34 2.32
H 3.95 1.92
K 4.01 1.99

  B-V: +0.54       V-I: +0.54


Derivations

Heliocentric distance: 25.38 pc (0.7% margin of error)

Galactocentric distance: 7,383 pc

Transverse velocity: 76.6 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 17.4 pc 1.1 pc 18.4 pc
Velocity (U, V, W) 92.1 km/s -13.8 km/s -11.6 km/s

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