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Help Detailed Information for a Named Object

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Cosmological Parameters

Results for object ARP 256 (Arp 256)

  • Overview
  • Cross-IDs (7)
  • Coordinates (5)
  • Redshifts (2)
  • Classifications (4)
  • Galaxy Extinctions
  • Notes (2)
  • Photometry & SED (44)
  • Spectra (5)
  • Images (47)
  • References (52)
  • External Links
SED Plot Loading...
IRSA FinderChart ImagePOSS-II F (North), AAO-SES/SERC-ER (South), Red image
Search images
Image Credit: Caltech or AAO/ROE

Selected data and derived quantities for ARP 256†.  More information in the tabs above.
Cross-identificationsEssential note
ARP 256; VV 352; VIII Zw 018; IRAS 00163-1039; IRAS F00163-1039
Coordinates for Preferred Position
Equatorial (J2000)Galactic
RA, DecRA, Dec [Deg]Unc Semi-major,minor ["]Unc PA [deg]ReferenceLon, Lat [deg]
00h18m50.5s, -10d22m09s4.710417, -10.3691672.80E+01, 2.80E+01 02011NEDR....1H...1C96.767954, -71.565531
Preferred Redshift & Derived Quantities [H0 = km/sec/Mpc], Ωmatter = , Ωvacuum = ]Redshift-independent Distances
z (Helio)V (Helio) [km/s]ReferenceV (CMB) [km/s]Hubble Distance (CMB) [Mpc]# Measurements
0.02730 +/- 0.000008184.035458 +/- 0.0000002014ApJS..212...18B 7845 +/- 24 107.47 +/- 7.53
Classifications
Object TypeMorphologyReferenceActivity TypeReferenceOther
GPairappearance of fission1966ApJS...14....1A
Quick-look Angular & Physical DiametersForeground Galactic Extinction (2011ApJ...737..103S)
PassbandDiameter ["]ReferenceDiameter [kpc]Aλ [mag] VAλ [mag] K
0.0990.011
Quick-look Photometry & Luminosities (brightest flux in each spectral region)
Spectral regionBandApparent mag or fluxReferenceAbsolute Mag or νLν [W]νLν [L☉(bol)]
X-Ray
UV NUV (GALEX) 3.93 +/- 0.11 milliJy 2011ApJ...741..124H 7.47E+36 +/- 1.51E+36 [W] 1.94E+10 +/- 3.92E+09
Visible
Near-IR
Far-IR 100 microns (IRAS) 9.66 +/- 0.138 Jy 2003AJ....126.1607S 4.17E+37 +/- 8.37E+36 [W] 1.09E+11 +/- 2.18E+10
Radio
 †Derived quantities are based on the median redshift-independent distance when available, otherwise the preferred redshift is used with the selected cosmological parameters (which can be changed in search options).
 Cosmological params can be changed in search options.
Cross-identifications for ARP 256
Coordinates for ARP 256
Preferred Position:  00h18m50.5s -10d22m09s Equatorial J2000.0  (2011NEDR....1H...1C)
Preferred Position of ARP 256
Reference FrameLongitudeLatitudeLongitudeLatitudeUncertainty Ellipse (arcsec)
Decimal DegreesDecimal DegreesSexagesimalSexagesimalSemimajor (a)Semiminor (b)PA (deg)
RA/Dec Equatorial (J2000.0)4.710417-10.36916700h18m50.5s-10d22m09s2.80E+012.80E+01 0
RA/Dec Equatorial (B1950.0)4.073676-10.64677800h16m17.7s-10d38m48s2.80E+012.80E+01 0
Galactic96.767954-71.5655312.80E+012.80E+01 0
Supergalactic283.9633735.7456792.80E+012.80E+01 0
Ecliptic (J2000.0)0.147107-11.3773202.80E+012.80E+01 0
Ecliptic (B1950.0)359.447220-11.3778592.80E+012.80E+01 0
Measured Positions for ARP 256
Redshifts and Derived Quantities for ARP 256
Preferred Redshift: Z = 0.02730, H0 = km/sec/Mpc, Ωmatter = , Ωvacuum =
Quantities Derived from Preferred Redshift for ARP 256 
Calculated and Corrected Velocities
TypeVelocitiesReference
V (Heliocentric) 8184 ± 0 km/s2014ApJS..212...18B
V (Kinematic LSR) 8181 ± 0 km/s1986MNRAS.221.1023K
V (Galactocentric GSR) 8250 ± 3 km/s1991RC3.9.C...0000d
V (Local Group) 8304 ± 7 km/s1996AJ....111..794K
V (3K CMB) 7845 ± 24 km/s1996ApJ...473..576F
V (Virgo Infall only) 8125 ± 14 km/s2000ApJ...529..786M
V (Virgo + GA only) 8053 ± 15 km/s2000ApJ...529..786M
V (Virgo + GA + Shapley) 8044 ± 15 km/s2000ApJ...529..786M
Hubble Flow Distance and Distance Modulus (where H0 = km/sec/Mpc ± km/sec/Mpc)
TypeDistanceModulus
D (Galactocentric GSR) 113.01 ± 7.91 Mpc(m-M) = 35.27 ± 0.15 mag
D (Local Group) 113.76 ± 7.96 Mpc(m-M) = 35.28 ± 0.15 mag
D (3K CMB) 107.47 ± 7.53 Mpc(m-M) = 35.16 ± 0.15 mag
D (Virgo Infall only) 111.31 ± 7.79 Mpc(m-M) = 35.23 ± 0.15 mag
D (Virgo + GA only) 110.32 ± 7.72 Mpc(m-M) = 35.21 ± 0.15 mag
D (Virgo + GA + Shapley) 110.19 ± 7.71 Mpc(m-M) = 35.21 ± 0.15 mag
Scale at Hubble Flow Distances
TypeValues
Scale (Galactocentric GSR) 548 pc/arcsec = 0.548 kpc/arcsec = 32.87 kpc/arcmin = 1.97 Mpc/degree
Scale (Local Group) 552 pc/arcsec = 0.552 kpc/arcsec = 33.09 kpc/arcmin = 1.99 Mpc/degree
Scale (3K CMB) 521 pc/arcsec = 0.521 kpc/arcsec = 31.26 kpc/arcmin = 1.88 Mpc/degree
Scale (Virgo Infall only) 540 pc/arcsec = 0.540 kpc/arcsec = 32.38 kpc/arcmin = 1.94 Mpc/degree
Scale (Virgo + GA only) 535 pc/arcsec = 0.535 kpc/arcsec = 32.09 kpc/arcmin = 1.93 Mpc/degree
Scale (Virgo + GA + Shapley) 534 pc/arcsec = 0.534 kpc/arcsec = 32.05 kpc/arcmin = 1.92 Mpc/degree
Cosmology-Corrected Quantities [H0 = km/sec/Mpc, Ωmatter = , Ωvacuum = ]
[Redshift 0.026169 as corrected to the ]
TypeValues
Luminosity Distance110 Mpc (m-M) = 35.20 mag
Angular-Size Distance104 (m-M) = 35.09 mag
Co-Moving Radial Distance107 (m-M) = 35.14 mag
Co-Moving Tangential Distance107 (m-M) = 35.14 mag
Co-Moving Volume0.00512 Gpc^3
Light Travel-Time 0.344 Gyr
Age at Redshift 0.026169 12.955 Gyr
Age of Universe 13.299 Gyr
Scale (Cosmology Corrected) 505 pc/arcsec = 0.505 kpc/arcsec = 30.30 kpc/arcmin = 1.82 Mpc/degree
Surface Brightness DimmingFlux Density per Unit Area = 0.90183; Magnitude per Unit Area = 0.1122 mag
Measured Redshifts of ARP 256
Classifications for ARP 256
Galaxy Extinctions for ARP 256
Notes for ARP 256
Photometry & SED for ARP 256
Quick-look Photometry & SED plot for ARP 256
Quick Look Photometry & Luminosities (brightest flux in each spectral region)
SED Plot
Photometry for ARP 256
See also Spectra.

Images for object ARP 256 (Arp 256)

IRSA FinderChart ImagePOSS-II F (North), AAO-SES/SERC-ER (South), Red image
View in IRSA Finderchart

Image Credit: Caltech or AAO/ROE

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Preview File Size
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Information Lambda
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Clambda Spectral Region Band FOV 1
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FOV 2
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Literature References for ARP 256
External Resource Links for ARP 256
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