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Cosmological Parameters

Results for object MESSIER 101 (NGC 5457:[MGS2012] 001)

  • Overview
  • Cross-IDs (48)
  • Coordinates (72)
  • Redshifts (26)
  • Distances (116)
  • Classifications (132)
  • Galactic Extinctions
  • Notes (28)
  • Diameters (8)
  • Photometry & SED (173)
  • Spectra (14)
  • Images (147)
  • References (1682)
  • External Links
  • Survey Coverage
SED Plot Loading...
IRSA
FinderChart
ImagePOSS-II F (North), AAO-SES/SERC-ER (South), Red image
View in IRSA Finderchart
Image Credit: Caltech or AAO/ROE

Selected data and derived quantities for MESSIER 101†.  More information in the tabs above.
Cross-identificationsEssential note
MESSIER 101; MESSIER 102; NGC 5457; UGC 08981; ARP 026 M102 may be a duplicate obs. of M101; see Sawyer, JRASC 41, Nos 7
Coordinates for Preferred Position
Equatorial (J2000)Galactic
RA, DecRA, Dec [Deg]Unc Semi-major,minor ["]Unc PA [deg]ReferenceLon, Lat [deg]
14h03m12.5441s, +54d20m56.220s210.802267, 54.3489501.20E-01, 1.20E-01 02010ApJS..189...37E102.037326, 59.771382
Preferred Redshift & Derived Quantities [H0 = 67.8 km/sec/Mpc], Ωmatter = 0.308, Ωvacuum = 0.698]Redshift-independent Distances
z (Helio)V (Helio) [km/s]ReferenceV (CMB) [km/s]Hubble Distance (CMB) [Mpc]# Measurements
0.00080 +/- 0.00001241.033170 +/- 2.0985481991RC3.9.C...0000d 362 +/- 9 5.34 +/- 0.40116
Classifications
Object TypeMorphologyReferenceActivity TypeReferenceOther
GSAB(rs)cd1991RC3.9.C...0000dSAB(rs)cd HII
Quick-look Angular & Physical DiametersForeground Galactic Extinction (2011ApJ...737..103S)
PassbandDiameter ["]ReferenceDiameter [kpc]Aλ [mag] VAλ [mag] K
POSS1 103a-O 2400.001962MCG1..C...0000V77.31 0.0230.003
Quick-look Photometry & Luminosities (brightest flux in each spectral region)
Spectral regionBandApparent mag or fluxReferenceAbsolute Mag or νLν [W]νLν [L☉(bol)]
X-Ray 0.2-4 keV (EINSTEIN) 19.35E-13 ergs sec^-1^ cm^-2^ 1992ApJS...80..531F 1.02E+33 [W] 2.66E+06
UV UV_3150 (m_T) 7.43 +/- 0.43 mag 1995A&AS..114..527R -21.66 +/- 0.43 [mag] 1.67E+10 +/- 8.16E+09
Visible R (Cousins) AB 7.76 +/- 0.03 mag 2014MNRAS.445..881C -21.33 +/- 0.07 [mag] 1.49E+10 +/- 5.66E+08
Near-IR H_tot (2MASS LGA) 5.805 +/- 0.042 mag 2003AJ....125..525J -23.29 +/- 0.08 [mag] 1.22E+10 +/- 5.76E+08
Far-IR FIR (IRAS) 6.05E-12 W m^-2^ 1988ApJS...68...91R 3.20E+36 [W] 8.33E+09
Radio 57.5 MHz 6.5 +/- 2.5 Jy 1990ApJ...352...30I 1.97E+30 +/- 7.61E+29 [W] 5.13E+03 +/- 1.98E+03
 †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 MESSIER 101
Coordinates for MESSIER 101
Preferred Position:  14h03m12.5441s +54d20m56.220s Equatorial J2000.0  (2010ApJS..189...37E)
Preferred Position of MESSIER 101
Reference FrameLongitudeLatitudeLongitudeLatitudeUncertainty Ellipse (arcsec)
Decimal DegreesDecimal DegreesSexagesimalSexagesimalSemimajor (a)Semiminor (b)PA (deg)
RA/Dec Equatorial (J2000.0)210.80226754.34895014h03m12.5441s+54d20m56.220s1.20E-011.20E-01 0
RA/Dec Equatorial (B1950.0)210.35989054.58855114h01m26.3736s+54d35m18.784s1.20E-011.20E-01 0
Galactic102.03732659.7713821.20E-011.20E-01 0
Supergalactic63.58155922.6127591.20E-011.20E-01 0
Ecliptic (J2000.0)174.36540959.7972651.20E-011.20E-01 0
Ecliptic (B1950.0)173.65572959.7970541.20E-011.20E-01 0
Measured Positions for MESSIER 101
Redshifts and Derived Quantities for MESSIER 101
Preferred Redshift: Z = 0.00080, H0 = 67.8 km/sec/Mpc, Ωmatter = 0.308, Ωvacuum = 0.698
Quantities Derived from Preferred Redshift for MESSIER 101 
Calculated and Corrected Velocities
TypeVelocitiesReference   
V (Heliocentric) 241 ± 2 km/s1991RC3.9.C...0000d
V (Kinematic LSR) 254 ± 2 km/s1986MNRAS.221.1023K
V (Galactocentric GSR) 360 ± 5 km/s1991RC3.9.C...0000d
V (Local Group) 379 ± 9 km/s1996AJ....111..794K
V (3K CMB) 362 ± 9 km/s1996ApJ...473..576F
V (Virgo Infall only) 418 ± 9 km/s2000ApJ...529..786M
V (Virgo + GA only) 453 ± 9 km/s2000ApJ...529..786M
V (Virgo + GA + Shapley) 455 ± 9 km/s2000ApJ...529..786M
Hubble Flow Distance and Distance Modulus (where H0 = 67.8 km/sec/Mpc ± km/sec/Mpc)
TypeDistanceModulus
D (Galactocentric GSR) 5.31 ± 0.38 Mpc(m-M) = 28.63 ± 0.15 mag
D (Local Group) 5.59 ± 0.41 Mpc(m-M) = 28.74 ± 0.15 mag
D (3K CMB) 5.34 ± 0.40 Mpc(m-M) = 28.64 ± 0.16 mag
D (Virgo Infall only) 6.17 ± 0.43 Mpc(m-M) = 28.95 ± 0.15 mag
D (Virgo + GA only) 6.68 ± 0.47 Mpc(m-M) = 29.12 ± 0.15 mag
D (Virgo + GA + Shapley) 6.72 ± 0.47 Mpc(m-M) = 29.14 ± 0.15 mag
Scale at Hubble Flow Distances
TypeValues
Scale (Galactocentric GSR) 26 pc/arcsec = 0.026 kpc/arcsec = 1.55 kpc/arcmin = 0.09 Mpc/degree
Scale (Local Group) 27 pc/arcsec = 0.027 kpc/arcsec = 1.62 kpc/arcmin = 0.10 Mpc/degree
Scale (3K CMB) 26 pc/arcsec = 0.026 kpc/arcsec = 1.55 kpc/arcmin = 0.09 Mpc/degree
Scale (Virgo Infall only) 30 pc/arcsec = 0.030 kpc/arcsec = 1.79 kpc/arcmin = 0.11 Mpc/degree
Scale (Virgo + GA only) 32 pc/arcsec = 0.032 kpc/arcsec = 1.94 kpc/arcmin = 0.12 Mpc/degree
Scale (Virgo + GA + Shapley) 33 pc/arcsec = 0.033 kpc/arcsec = 1.95 kpc/arcmin = 0.12 Mpc/degree
Cosmology-Corrected Quantities [H0 = 67.8 km/sec/Mpc, Ωmatter = 0.308, Ωvacuum = 0.698]
[Redshift 0.001207 as corrected to the Reference Frame defined by the 3K CMB]
TypeValues
Luminosity Distance5.34 Mpc (m-M) = 28.64 mag
Angular-Size Distance5.33 (m-M) = 28.63 mag
Co-Moving Radial Distance5.34 (m-M) = 28.64 mag
Co-Moving Tangential Distance5.34 (m-M) = 28.64 mag
Co-Moving Volume6.36e-07 Gpc^3
Light Travel-Time 0.017 Gyr
Age at Redshift 0.001207 13.813 Gyr
Age of Universe 13.830 Gyr
Scale (Cosmology Corrected) 26 pc/arcsec = 0.026 kpc/arcsec = 1.55 kpc/arcmin = 0.09 Mpc/degree
Surface Brightness DimmingFlux Density per Unit Area = 0.99519; Magnitude per Unit Area = 0.005239 mag
Measured Redshifts of MESSIER 101
See also Distances.
Redshift-independent Distances for MESSIER 101
See also Redshifts.
Classifications for MESSIER 101
Galaxy Extinctions for MESSIER 101
Notes for MESSIER 101
Measured Diameters for MESSIER 101
Photometry & SED for MESSIER 101
Quick-look Photometry & SED plot for MESSIER 101
Quick Look Photometry & Luminosities (brightest flux in each spectral region)
SED Plot
Photometry for MESSIER 101
See also Spectra.

Images for object MESSIER 101 (NGC 5457:[MGS2012] 001)

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 MESSIER 101
External Resource Links for MESSIER 101
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