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NGC 1705 (3,212 of 18,816)

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NGC 1705

NGC 1705, AM 0453-532, ESO 158-13, LEDA 16282, SGC 045306-5326.5, SPB 64, h 2679, GC 937

RA: 04h 54m 13.7s
Dec: −53° 21′ 40″

Con: Pictor
Ch: MSA:457, U2:421, SA:24

Ref: SIMBAD

(reference key)

Type: galaxy (starburst), S0:

Mag: B=12.8, V=12.3

Size: 1.862′ x 1.412′
PA: 50°

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Sketches  (1)

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Historical observations

John Herschel

John Herschel recorded it as "B, S, R, pmbM, 20 arcseconds." On a second occassion he called it "pB, S, R, gpmbM, 15 arcseconds." His third observation was recorded as "vF, S, R, psbM, 20 arcseconds, very dilute at the borders."

Published comments

de Vaucouleurs, G. (1956)

De Vaucouleurs (1956) "Survey of bright galaxies south of -35 declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm).

Schmidt, K.-H. et al. (1993)

Schmidt K.-H., Priebe A. & Boller T. (1993) Nearby galaxies. Revised machine-readable version of the catalogue. Astron. Nachr., 314, 371. [1993AN....314..371S]

Other names: "E158-13". Inclination: (face-on, in degrees) 49 Total photoelectric blue mag 12.77 Total colour index .38 Logarithm of the angular diameter D25 (arcminutes) 1.28 Blue photographic magnitude 12.80 This galaxy is included in a sample of galaxies with velocity less than 500km/s with respect to the centroid of the Local Group. [Nearby Galaxies. Schmidt K.-H., Priebe A., Boller T. (Astron. Nachr. 314, 371 (1993))]

Sandage, A. (1975)

Sandage (1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the Dorado Group. Members include NGC 1515, NGC 1533, NGC 1536, NGC 1543, NGC 1546, NGC 1553, NGC 1566, NGC 1574, NGC 1596, NGC 1617 and IC 2056. Possible additional members include NGC 1559, NGC 1602, NGC 1672, NGC 1688, NGC 1703 & NGC 1705

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy.

Modern observations

Brian Skiff

15cm - fairly f & vsm @ 80x. 140x: 20" diam w/mod sharp concen to *ar nuc. m14 * 1' NW. BS, 11Nov1993, LCO.

Steve Gottlieb

Southern galaxies from Australia

[amastro] posting, Apr 30, 2008

04 54 14.1 -53 21 38

V = 12.4; Size 1.9x1.4; Surf Br = 13.3; PA = 50d

24" (4/5/08): at 260x appears moderately bright and large, elongated 4:3 SW-NE, 1.2'x0.9', broad concenctration. This starburst galaxy contains a super-star cluster (SSC 1750-A) that appears as a 14th magnitude "star" offset to the west of center. In good seeing at 350x using the 13mm Ethos and a 2x barlow, the SSC just west of center was easily visible and generally appeared stellar, though at moments there was an impression it spanned a couple of arcseconds. A short string of four faint stars is collinear to the NW. Located 30' ENE of the bright double star Iota Pictoris (5.6/6.4 at 12"). N1705 is a nearby blue dwarf starburst galaxy at a distance of 17 million light years.

Contemporary observations

Magda Streicher

1 Jan 2008

Galaxy

RA: 04h54m13s - DEC: -53o21'

Magnitude: 12.8 Size: 1.9'x1.4'

Tel: 12" S/C 76x - 218x - 346x Date: 1 Jan 2008 Site: Alldays - good

This faint round galaxy is situated a mere 30' east of the lovely double star Iota Pictoris. Slightly elongated in an NE-SW direction. The nucleus is bright and with time come and go like an out of focus star.

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