PAGE
INDEX
SOUTHERN DOUBLES
HJ 5299
SOUTHERN VARIABLES
NONE LISTED
BRIGHT STARS
NONE LISTED
OTHER DOUBLES and VARIABLES
NONE LISTED
DEEP SKY
NONE LISTED
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NOTES 1
Positions given as;
I.e. (13583-6018), are;
RIGHT ASCENSION
13h 58.3m
DECLINATION
-60° 15'
EPOCH
2000.0
This follows the current
WDS Conventions. |
NOTES 2
S E P A R A T I O N
" or "arcsec
In arc seconds or
' or 'arcmin
In arc minutes or
mas - milli arc seconds
POSITION ANGLE
( ° ) Angle in degrees.
Measured from
North through East
M A G N I T U D E S
v - visual (naked-eye)
p - photographic
V - Photometric Visual
B - Photometric Blue
MV - Absolute @ 10pc.
ABBREVIATIONS
pc. - parsecs
ly. - light-years
AU - Astronomical Unit
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NOTES 3
O R B I T A L
E L E M E N T S
T: Periastron (yr.)
P: Period (yr.)
a: Semi-Major Axis (arc sec.)
e: Eccentricity
i: Inclination
Ω: Orbital Node (°)
ω: Angle True Orbit (°)
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SELECTED SOUTHERN DOUBLES and VARIABLES
R.A. 21 Hours
HJ 5299 (21548-3926)
is an equal magnitude pair
0.9°SSW (6'W and 30'S) from the
planetary nebula IC 5148. The magnitudes are 8.9
and 9.0, respectively, and both appear
yellow-orange as reflected in the late K0
spectral types. Later references state that the
primary is a much hotter B8 subgiant. HJ 5299 is
a wide 33.5 srcsec, set at PA c.56°. The
duo is clearly visible in 7.5cm telescopes.
Proper motions of each star makes this probably
an optical pair.
“Southern Astronomical Delights”
© (2009) |
LAST UPDATED
10 Mar 2009 |
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