Catalogues
Crux / New General & Index Catalogue (NGC/IC)
Open Clusters
Name | RA | Dec | Type | vMag | Dim | MD | Dreyer Description | Identification, Remarks |
---|---|---|---|---|---|---|---|---|
NGC 4052 | 12 02 00.0 | -63 13 18 | OCL (II1p) | 8.8 | 10 | 1.209 | Cl, pRi, lC | OCL 870; ESO 94-SC10 |
NGC 4103 | 12 06 39.5 | -61 15 00 | OCL (I3m) | 7.4 | 6 | 1.664 | Cl, pL, pC, iR, st 10…14 | OCL 871; ESO 130-SC5 |
NGC 4184 | 12 13 32.5 | -62 42 47 | OCL (I2p) | 2 | Cl, mC, st eS | ESO 130-SC10; OCL 877 | ||
NGC 4337 | 12 24 03.2 | -58 07 25 | OCL (II3p) | 8.9 | 3.5 | 0.489 | Cl, pRi, lC, st 12…14 | OCL 878; ESO 131-SC2 |
NGC 4349 | 12 24 06.0 | -61 52 13 | OCL (I2m) | 7.4 | 4 | 2.176 | Cl, vB, vL, lC, st 12…14 | OCL 882; ESO 131-SC3 |
NGC 4439 | 12 28 26.3 | -60 06 11 | OCL (II1p) | 8.4 | 4 | 1.785 | Cl, S, st 11…12 | OCL 884; ESO 131-SC6 |
NGC 4609 | 12 42 19.8 | -62 59 38 | OCL (II1p) | 6.9 | 6 | 1.223 | Cl, pL, pC, cE, st 10 | OCL 890; ESO 95-SC14 |
NGC 4755 | 12 53 39.0 | -60 21 42 | OCL (I3r) | 4.2 | 10 | 1.976 | Cl, vL, st vB (κ Crucis) | OCL 892; ESO 131-SC16; Jewel Box, Kappa Cru cluster |
Legend
Name | NGC/IC Designation |
RA | Right Ascension (J2000.0) |
Dec | Declination (J2000.0) |
Type | Object type |
bMag | Photographic (blue) magnitude |
vMag | Visual magnitude |
B-V | Difference of visual and blue magnitude |
SB | Surface brightness (mag/arcmin2) |
Dim | Dimensions (arcmin) |
PA | Position Angle (°) |
z | Redshift (from NED or LEDA) |
D(z) | Distance derived from z in Mpc, using D(z) = cz/H0, with Hubble Parameter H0 = 71 (km/s)/Mpc |
MD | Metric distance: for galaxies with S = 1, 6, 7 or 8 in Mpc (from NED); for other types with S = 2, 3, 4, or 5 in kpc |
Dreyer Description | See below |
Identification, Remarks |
Dreyer Description
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 |