Catalogues

Catalogue

Constellation

Octans / New General & Index Catalogue (NGC/IC)

Galaxies

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke ^[277]
Name	RA	Dec	Type	bMag	vMag	B-V	SB	Dim	PA	z	D(z)	MD	Dreyer Description	Identification, Remarks
NGC 2573	01 41 53.2	-89 20 03	Gx (SBc)	14.1	13.5	0.6	13.8	1.9 × 0.7	85	0.008102	34.22		F, S, R, glbM, Polariss Austr	ESO 1-1; IRAS 02425-8934; Polarissima australis
NGC 2573 A	23 12 14.6	-89 07 27	Gx (SBb)	14.7	13.9	0.8	14.0	2.1 × 0.6	18	0.008249	34.84		F, S, R, glbM, Polariss Austr	ESO 1-9; AM 2247-892; IRAS 22443-8923
NGC 2573 B	23 07 32.0	-89 06 55	Gx (IBm)	15.1	14.5	0.6	14.0	1.5 × 0.5	120	0.008533	36.04	30.900	F, S, R, glbM, Polariss Austr	ESO 1-8; AM 2240-892
NGC 6438	18 22 15.9	-85 24 06	Gx (S0)	12.7	11.7	1.0	12.5	1.6 × 1.4	156	0.008129	34.34	29.800	pB, R, vgbM	ESO 10-1; AM 1806-852
NGC 6438 A	18 22 33.0	-85 24 22	Gx (Ring B)	12.6	11.6	1.0	12.5	2.7 × 1	32	0.008379	35.39	30.900	pB, R, vgbM	ESO 10-2; AM 1806-852; IRAS 18061-8525
NGC 6557	18 21 24.7	-76 34 58	Gx (S0)	13.9	12.9	1.0	13.4	1.6 × 1.1	80	0.018356	77.53	53.950	vF, vS, R, glbM	ESO 45-1; AM 1814-763
NGC 6920	20 43 57.1	-80 00 01	Gx (S0)	12.4	11.2	1.2	13.3	1.8 × 1.5	142	0.008667	36.61		pB, cS, R, psmbM	ESO 26-4; AM 2036-801
NGC 7095	21 52 24.8	-81 31 53	Gx (Sc)	12.2	11.5	0.7	13.6	4 × 3.3		0.008573	36.21	18.310	F, pL, R, vglbM, * 13 inv	ESO 27-1; FAIR 353; IRAS 21457-8145
NGC 7098	21 44 16.0	-75 06 39	Gx (SBa)	12.2	11.3	0.9	13.7	4 × 2.6	74	0.007942	33.55	29.100	pF, R, g, psmbM, am st	ESO 48-5; IRAS 21393-7520
NGC 7637	23 26 28.3	-81 54 40	Gx (Sc)	13.2	12.5	0.7	13.9	2.1 × 1.9	36	0.012402	52.39		vF, pL, R, vlbM, * nr	ESO 12-1; AM 2322-821; IRAS 23226-8211
IC 4333	14 05 19.5	-84 16 23	Gx (S0)	14.4	13.4	1.0	12.8	1.6 × 0.4	65	0.009060	38.27		eF, vS, eE 40°, susp	ESO 8-5; IRAS 13574-8402; most southern IC object
IC 4864	19 40 06.0	-77 33 26	Gx (SBa)	14.8	13.5	1.3	12.8	1.5 × 0.4	176	0.020254	85.55	126.00	eF, vS, eE 70°, vF * sp 1'	ESO 25-13; AM 1932-774
IC 4912	20 06 49.7	-77 21 27	Gx (Sc)	15.5	14.8	0.7	13.8	1.1 × 0.4	41	0.020474	86.48	69.850	eF, vS, F * np 1', susp	ESO 25-16
IC 4928	20 10 11.9	-77 18 33	Gx (S)	16.5	15.7	0.8	13.4	0.7 × 0.2	24	0.043653	184.3		eF, vS, eE 25°, eF * n 1', susp	ESO 46-6; IRAS 20034-7727
IC 5022	20 41 06.3	-76 26 59	Gx (SBR)	15.5	14.7	0.8	13.9	0.9 × 0.6	142	0.039244	165.7		eF, S, R, cbM, susp	ESO 47-5
IC 5025	20 44 59.6	-76 59 04	Gx (Sbc)	15.2	14.4	0.8	13.4	1.5 × 0.3	108	0.021692	91.63	82.000	vF, vS, cE 125°, bM, susp	ESO 47-10; FGCE 1510; IRAS 20389-7709
IC 5026	20 48 27.6	-78 04 08	Gx (Scd)	15.5	14.8	0.7	14.2	2.3 × 0.3	76	0.009174	38.75	35.280	eF, vS, mE 70°, lbM, susp	ESO 26-6; FGCE 1519
IC 5040	20 52 19.5	-76 41 11	Gx (Sd)	15.2	14.6	0.6	13.7	0.8 × 0.6	6	0.022035	93.07		cB, S, R, susp	ESO 47-14; IRAS 20461-7652

Legend

Key to columns ^[277]
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

Descriptions according to J.L.E. Dreyer ^{[313, 314, 315]}
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

Catalogues

Octans / New General & Index Catalogue (NGC/IC)

Galaxies

Legend

Dreyer Description

References