Kaffaljidhma (HIP 12706)

Kaffaljidhma is a white main-sequence star in the constellation Cetus. At 80 light years away, it is the 276th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.47. Kaffaljidhma is a multiple-star system. It is moving through the Galaxy at a speed of 24.4 km/s relative to the Sun. Its projected Galactic orbit carries it between 22,400 and 34,700 light years from the center of the Galaxy.

Sky position: RA 2h 43.3m, Dec +3 14.4'

Common designations: Kaffaljidhma, Gamma Ceti, 86 Ceti, HIP 12706, HD 16970, Gliese 9098 A

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Brightest stars in Cetus:
(list all)

1

|    2.04

)   Diphda

2

|    2.54

)   Alpha Ceti

3

|    3.46

)   Dheneb

4

|    3.47

)   Kaffaljidhma

5

|    3.49

)   Tau Ceti

6

|    3.56

)   Deneb Kaitos Shemali

7

|    3.60

)   Theta Ceti

8

|    3.74

)   Baten Kaitos

9

|    3.99

)   Upsilon Ceti

10

|    4.08

)   Delta Ceti

11

|    4.24

)   Pi Ceti

12

|    4.27

)   Mu Ceti

13

|    4.30

)   Xi-2 Ceti

14

|    4.36

)   Xi-1 Ceti

15

|    4.44

)   7 Ceti

16

|    4.55

)   2 Ceti

17

|    4.66

)   Chi Ceti

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


Galactic Orbit of Kaffaljidhma

(compared to the Sun)

Eccentricity: 21.7% vs. 16.0%

Angle φ : 54.5 vs. 26.0

Semi-major axis : 8,759 pc vs. 8,686 pc

Semi-minor axis: 8,551 pc vs. 8,574 pc

Focus-to-center: 1,898 pc vs. 1,388 pc

Semilatus rectum : 8,348 pc vs. 8,464 pc

Perigalacticon: 6,862 pc vs. 7,297 pc

Apogalacticon: 10,657 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for Kaffaljidhma
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 40.82551857 0.58 mas -146.10 0.71 mas/yr.
Declination: 3.23617153 0.47 mas -146.12 0.55 mas/yr.
     
Galactic Longitude: 168.91925608 -18.45 mas/yr.
Galactic Latitude: -49.38190431 -205.81 mas/yr.

Parallax: 40.97 0.63 mas


Spectrography

Spectral Type: A2Vn 2003AJ....126.2048G.

Radial Velocity: -4.90 0.90 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 3.56 1.63
V 3.47 1.53
R 3.50 1.56
I 3.50 1.56
J 3.24 1.30
H 3.10 1.17
K 3.08 1.14

  B-V: +0.09       V-I: -0.03


Derivations

Heliocentric distance: 24.40 pc (1.5% margin of error)

Galactocentric distance: 7,416 pc

Transverse velocity: 23.9 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -15.6 pc 3.1 pc -18.5 pc
Velocity (U, V, W) 21.3 km/s -2.0 km/s -11.8 km/s

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