Katalog Legenden

NGC 2000.0 -The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer

Objekt Klassifikation

Gx  = Galaxy
OC  = Open star cluster
Gb  = Globular star cluster, usually in the Milky Way Galaxy
Nb  = Bright emission or reflection nebula
Pl  = Planetary nebula
C+N = Cluster associated with nebulosity
Ast = Asterism or group of a few stars
Kt  = Knot  or  nebulous  region  in  an  external galaxy
*** = Triple star
D*  = Double star
*   = Single star
?   = Uncertain type or may not exist
    = (blank) Unidentified at the place given, or type unknown
-   = Object called nonexistent in the RNGC (Sulentic and Tifft 1973)
PD  = Photographic plate defect

Abkürzungen der Objektbeschreibungen (nach Dreyer)

ab       = about
alm      = almost
am       = among
annul    = annular or ring nebula
att      = attached
b        = brighter
bet      = between
biN      = binuclear
bn       = brightest to n side
bs       = brightest to s side
bp       = brightest to p side
bf       = brightest to f side
B        = bright
c        = considerably
chev     = chevelure
co       = coarse, coarsely
com      = cometic (cometary form)
comp     = companion
conn     = connected
cont     = in contact
C        = compressed
Cl       = cluster
d        = diameter
def      = defined
dif      = diffused
diffic   = difficult
dist     = distance, or distant
D        = double
e        = extremely, excessively
ee       = most extremely
er       = easily resolvable
exc      = excentric
E        = extended
f        = following (eastward)
F        = faint
g        = gradually
glob.    = globular
gr       = group
i        = irregular
iF       = irregular figure
inv      = involved, involving
l        = little (adv.); long (adj.)
L        = large
m        = much
m        = magnitude
M        = middle, or in the middle
n        = north
neb      = nebula
nebs     = nebulous
neby     = nebulosity
nf       = north following
np       = north preceding
ns       = north-south
nr       = near
N        = nucleus, or to a nucleus
p        = preceding (westward)
pf       = preceding-following
p        = pretty (adv., before F. B. L, S)
pg       = pretty gradually
pm       = pretty much
ps       = pretty suddenly
plan     = planetary nebula (same as PN)
prob     = probably
P        = poor (sparse) in stars
PN       = planetary nebula
r        = resolvable (mottled, not resolved)
rr       = partially resolved, some stars seen
rrr      = well resolved, clearly consisting of stars
R        = round
RR       = exactly round
Ri       = rich in stars
s        = suddenly (abruptly)
s        = south
sf       = south following
sp       = south preceding
sc       = scattered
sev      = several
st       = stars (pl.)
st 9...  = stars of 9th magnitude and fainter
st 9..13 = stars of mag. 9 to 13
stell    = stellar, pointlike
susp     = suspected
S        = small in angular size
S*       = small (faint) star
trap     = trapezium
triangle = triangle, forms a triangle with
triN     = trinuclear
v        = very
vv       = _very_
var      = variable
*        = a single star
*10      = a star of 10th magnitude
*7-8     = star of mag. 7 or 8
**       = double star (same as D*)
***      = triple star
!        = remarkable
!!       = very much so
!!!      = a magnificent or otherwise interesting object