Celestial hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  M 65  ·  M 66  ·  NGC 3623  ·  NGC 3627  ·  NGC 3628
Leo Trio, Russ Brick
Leo Trio
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Leo Trio

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Description

M65, M66 and NGC 3628

Galaxies in Leo

Information about M 65

Basic object information

Object name: M 65

Object type: Galaxy

Magnitude: 9.2

Size: 9.8'x2.9'

Position angle: 174°

Position information

Apparent RA: 11h 19m 41s

Apparent Dec: +13° 0' 41"

Constellation: Leo

Altitude: 57° 40' 49"

Azimuth: 105° 10' 44"

Hour angle: 21h 52m 3s

Rise: 11h 50m 18s

Transit: 18h 16m 9s

Set: 0h 45m 58s

Names and designations

M 65

NGC 3623

UGC 6328

PGC 34612

MCG 2-29-18

ARP 317

IRAS11163+1322

ZWG 67.54

VV 308

CGCG 67-54

(ARP 317 )

(VV 308 )

Star atlas chart numbers

Herald-Bobroff Astroatlas: Chart C-48

Millennium Star Atlas: Charts 729-730 (Vol II)

Sky Atlas 2000.0: Chart 13

Uranometria 2000: Chart 191, Vol 1

Revised NGC/IC Catalog Data

(Wolfgang Steinicke, Jan 2003)

Names and designations

NGC 3623

PGC 34612

M 65

UGC 6328

MCG 2-29-18

ARP 317

IRAS11163+1322

ZWG 67.54

VV 308

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 18m 55.6s

Dec (J2000.0): +13° 05' 27"

B Magnitude: 10.1

V Magnitude: 9.2

Size: 9.8'x2.9'

Position angle: 174°

Classification: SBa

Saguaro Astronomy Club v7.2 Catalog Data

Saguaro Astronomy Club, August 2000

Names and designations

M 65

NGC 3623

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 18m 54.0s

Dec (J2000.0): +13° 05' 00"

Constellation: Leo

Magnitude: 9.3

Surface brightness: 12.8

Size: 9.0'x2.3'

Position angle: 174°

Object classification: SBa

Description: B,vL,mE 165,gbMBN

Notes: M66 subgroup

PGC 1999

Supplied by the LEDA team at the CRAL-Observatoire de Lyon (France)

Names and designations

PGC 34612

M 65

NGC 3623

UGC 6328

MCG 2-29-18

CGCG 67-54

IRAS 11163+1322

(ARP 317 )

(VV 308 )

Position information

RA (J2000.0): 11h 18m 55.8s (High accuracy)

Dec (J2000.0): +13° 05' 32"

Galactic longitude: 241.33°

Galactic latitude: 64.22°

Supergalactic longitude: 96.36°

Supergalactic latitude: -18.68°

Size and shape information

Apparent major isophotal diameter (D25): 9.2'

Mean error in log10 diameter: 0.031

Ratio of major to minor axes (R25): 4.09

Mean error in log10 R25: 0.054

Major axis position angle: 174°

Inclination between line of sight and polar axis: 75.200°

Apparent corrected diameter: 9.1'

Lyon galaxy group membership number: 231

Morphological information

Morphological type: SBa

Comments: Object has bar

Morphological type code: 1.044

Error in morphological type code: 0.653

Luminosity class code: 3.000

Error in luminosity class code: 0.461

Magnitude and colour index information

Total B magnitude: 10.172

Error in B magnitude: 0.169

Total I magnitude: 8.032

Error in I magnitude: 0.100

Total U-B colour index: 0.450

Total B-V colour index: 0.920

Effective U-B colour index: 0.525

Effective B-V colour index: 0.975

21cm line width at 20%% of peak (w20): 504.213 km/sec

Error in w20: 9.504 km/sec

21cm line width at 50%% of peak (w50): 472.851 km/sec

Error in w50: 20.108 km/sec

2Vm sin(i) from rotation curves: 500.034

Central velocity dispersion: 173 km/sec

Error in log10 velocity dispersion: 52.428

21cm line flux in magnitude: 14.225

Error in 21cm line flux in magnitude: 0.203

Far infrared magnitude: 11.345

Galactic extinction in B mag: 0.231 mag

Extinction in B mag due to inclination: 0.465 mag

21cm self-absorption in magnitude: 0.065 mag

Luminosity index: 0.322

Total apparent corrected B mag: 9.466

Total apparent corrected I mag: 7.736

Total apparent corrected U-B colour index: 0.290

Total apparent corrected B-V colour index: 0.749

Mean surface brightness within isophote 25: 23.138 mag/sq arcsec

Maximum rotational velocity: 244.3 km/sec

Error in log10 rotational velocity: 0.014

Max rotational velocity from H-alpha: 258.8 km/sec

Error in log10 rot vel from H-alpha: 0.006

Weighted mean max rot velocity: 256.4 km/sec

Error in log10 weighted mean rot vel: 0.005

Corrected 21cm line flux in magnitude: 14.160

21cm index bt-am21c in magnitude: 4.694

Radial velocity information

Heliocentric RV from radio measurements: 807.4 km/sec

Error in radio measurements: 11.3 km/sec

Heliocentric RV from optical measurements: 769.1 km/sec

Error in optical measurements: 79.7 km/sec

Mean heliocentric RV: 806.6 km/sec

Error in mean measurements: 11.2 km/sec

RV with respect to local group: 676.5 km/sec

RV with respect to GSR: 722.5 km/sec

RV corrected for infall of LG onto Virgo: 838.0 km/sec

RV with respect to the 3K CMB: 1147.1 km/sec

Kinematic distance modulus: 30.241

Astrophysical distance modulus: 31.203

Absolute B magnitude: -20.775

Information about M 66

Basic object information

Object name: M 66

Object type: Galaxy

Magnitude: 8.9

Size: 9.1'x4.1'

Position angle: 173°

Position information

Apparent RA: 11h 21m 1s

Apparent Dec: +12° 54' 38"

Constellation: Leo

Altitude: 57° 27' 21"

Azimuth: 105° 11' 7"

Hour angle: 21h 51m 13s

Rise: 11h 51m 49s

Transit: 18h 17m 28s

Set: 0h 47m 6s

Names and designations

M 66

NGC 3627

UGC 6346

PGC 34695

MCG 2-29-19

ARP 317

VV 308

ARP 16

ZWG 67.57

ARAK 288

CGCG 67-57

(ARP 317 )

(VV 308 )

Star atlas chart numbers

Herald-Bobroff Astroatlas: Chart C-48

Millennium Star Atlas: Charts 727-728 (Vol II)

Sky Atlas 2000.0: Chart 13

Uranometria 2000: Chart 191, Vol 1

Revised NGC/IC Catalog Data

(Wolfgang Steinicke, Jan 2003)

Names and designations

NGC 3627

PGC 34695

M 66

UGC 6346

MCG 2-29-19

ARP 317

VV 308

ARP 16

ZWG 67.57

ARAK 288

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 20m 15.1s

Dec (J2000.0): +12° 59' 24"

B Magnitude: 9.7

V Magnitude: 8.9

Size: 9.1'x4.1'

Position angle: 173°

Classification: SBb

Saguaro Astronomy Club v7.2 Catalog Data

Saguaro Astronomy Club, August 2000

Names and designations

M 66

NGC 3627

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 20m 12.0s

Dec (J2000.0): +13° 00' 00"

Constellation: Leo

Magnitude: 8.9

Surface brightness: 12.7

Size: 9.1'x4.1'

Position angle: 173°

Object classification: SBb

Description: B,vL,mE 150,mbM,2 st np

Notes: brightest in group;M 65 & NGC 3628 in field

PGC 1999

Supplied by the LEDA team at the CRAL-Observatoire de Lyon (France)

Names and designations

PGC 34695

M 66

NGC 3627

UGC 6346

MCG 2-29-19

CGCG 67-57

(ARP 317 )

ARP 16

(VV 308 )

ARAK 288

Position information

RA (J2000.0): 11h 20m 15.1s (High accuracy)

Dec (J2000.0): +12° 59' 21"

Galactic longitude: 241.96°

Galactic latitude: 64.42°

Supergalactic longitude: 96.59°

Supergalactic latitude: -18.42°

Size and shape information

Apparent major isophotal diameter (D25): 8.6'

Mean error in log10 diameter: 0.046

Ratio of major to minor axes (R25): 2.14

Mean error in log10 R25: 0.046

Major axis position angle: 173°

Inclination between line of sight and polar axis: 57.300°

Apparent corrected diameter: 8.8'

Lyon galaxy group membership number: 231

Morphological information

Morphological type: SBb

Comments: Object has bar, Object is multiple

Morphological type code: 3.049

Error in morphological type code: 0.419

Luminosity class code: 3.000

Error in luminosity class code: 0.465

Magnitude and colour index information

Total B magnitude: 9.611

Error in B magnitude: 0.163

Total I magnitude: 7.874

Error in I magnitude: 0.100

Total U-B colour index: 0.200

Total B-V colour index: 0.730

Effective U-B colour index: 0.270

Effective B-V colour index: 0.820

21cm line width at 20%% of peak (w20): 377.312 km/sec

Error in w20: 10.421 km/sec

21cm line width at 50%% of peak (w50): 339.260 km/sec

Error in w50: 14.850 km/sec

Central velocity dispersion: 119.9 km/sec

Error in log10 velocity dispersion: 52.428

21cm line flux in magnitude: 13.444

Error in 21cm line flux in magnitude: 0.518

Far infrared magnitude: 8.592

Galactic extinction in B mag: 0.231 mag

Extinction in B mag due to inclination: 0.476 mag

21cm self-absorption in magnitude: 0.031 mag

Luminosity index: 0.579

Total apparent corrected B mag: 8.899

Total apparent corrected I mag: 7.575

Total apparent corrected U-B colour index: 0.106

Total apparent corrected B-V colour index: 0.611

Mean surface brightness within isophote 25: 22.484 mag/sq arcsec

Maximum rotational velocity: 200.9 km/sec

Error in log10 rotational velocity: 0.020

Weighted mean max rot velocity: 200.9 km/sec

Error in log10 weighted mean rot vel: 0.020

Corrected 21cm line flux in magnitude: 13.413

21cm index bt-am21c in magnitude: 4.514

Radial velocity information

Heliocentric RV from radio measurements: 727.2 km/sec

Error in radio measurements: 9.1 km/sec

Heliocentric RV from optical measurements: 706.3 km/sec

Error in optical measurements: 46.2 km/sec

Mean heliocentric RV: 726.4 km/sec

Error in mean measurements: 8.9 km/sec

RV with respect to local group: 595.9 km/sec

RV with respect to GSR: 642.4 km/sec

RV corrected for infall of LG onto Virgo: 757.6 km/sec

RV with respect to the 3K CMB: 1067.0 km/sec

Kinematic distance modulus: 30.022

Astrophysical distance modulus: 29.980

Absolute B magnitude: -21.123

Information about NGC 3628

Basic object information

Object name: NGC 3628

Object type: Galaxy

Magnitude: 9.6

Size: 13.1'x3.1'

Position angle: 104°

Position information

Apparent RA: 11h 21m 2s

Apparent Dec: +13° 30' 38"

Constellation: Leo

Altitude: 57° 49' 4"

Azimuth: 104° 15' 58"

Hour angle: 21h 51m 42s

Rise: 11h 50m 40s

Transit: 18h 17m 30s

Set: 0h 48m 18s

Names and designations

NGC 3628

UGC 6350

PGC 34697

MCG 2-29-20

ZWG 67.58

ARP 317

VV 308

IRAS11176+1351

CGCG 67-58

(ARP 317 )

(VV 308 )

Star atlas chart numbers

Herald-Bobroff Astroatlas: Chart C-48

Millennium Star Atlas: Charts 727-728 (Vol II)

Sky Atlas 2000.0: Chart 13

Uranometria 2000: Chart 191, Vol 1

Revised NGC/IC Catalog Data

(Wolfgang Steinicke, Jan 2003)

Names and designations

NGC 3628

PGC 34697

UGC 6350

MCG 2-29-20

ZWG 67.58

ARP 317

VV 308

IRAS11176+1351

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 20m 16.7s

Dec (J2000.0): +13° 35' 24"

B Magnitude: 10.4

V Magnitude: 9.6

Size: 13.1'x3.1'

Position angle: 104°

Classification: Sb

Saguaro Astronomy Club v7.2 Catalog Data

Saguaro Astronomy Club, August 2000

Names and designations

NGC 3628

UGC 6350

Catalog information

Type of object: Galaxy

RA (J2000.0): 11h 20m 18.0s

Dec (J2000.0): +13° 35' 00"

Constellation: Leo

Magnitude: 9.5

Surface brightness: 13.4

Size: 13.1'x3.1'

Position angle: 104°

Object classification: Sb

Description: pB,vL,vmE 102

Notes: H V 8;Leo group;disturbed

PGC 1999

Supplied by the LEDA team at the CRAL-Observatoire de Lyon (France)

Names and designations

PGC 34697

NGC 3628

UGC 6350

MCG 2-29-20

CGCG 67-58

IRAS 11176+1351

(ARP 317 )

(VV 308 )

Position information

RA (J2000.0): 11h 20m 16.9s (High accuracy)

Dec (J2000.0): +13° 35' 13"

Galactic longitude: 240.86°

Galactic latitude: 64.78°

Supergalactic longitude: 96.00°

Supergalactic latitude: -18.19°

Size and shape information

Apparent major isophotal diameter (D25): 12.9'

Mean error in log10 diameter: 0.060

Ratio of major to minor axes (R25): 3.89

Mean error in log10 R25: 0.082

Major axis position angle: 104°

Inclination between line of sight and polar axis: 88.142°

Apparent corrected diameter: 12.9'

Lyon galaxy group membership number: 231

Morphological information

Morphological type: Sb

Morphological type code: 3.076

Error in morphological type code: 0.354

Luminosity class code: 5.000

Error in luminosity class code: 0.500

Magnitude and colour index information

Total B magnitude: 10.260

Error in B magnitude: 0.162

Total I magnitude: 8.222

Error in I magnitude: 0.100

Total B-V colour index: 0.800

Effective U-B colour index: 0.710

Effective B-V colour index: 0.840

21cm line width at 20%% of peak (w20): 478.053 km/sec

Error in w20: 9.233 km/sec

21cm line width at 50%% of peak (w50): 448.606 km/sec

Error in w50: 5.328 km/sec

Central velocity dispersion: 176.2 km/sec

Error in log10 velocity dispersion: 52.428

21cm line flux in magnitude: 11.406

Error in 21cm line flux in magnitude: 0.213

Far infrared magnitude: 8.767

Galactic extinction in B mag: 0.231 mag

Extinction in B mag due to inclination: 0.801 mag

21cm self-absorption in magnitude: 0.478 mag

Luminosity index: 0.730

Total apparent corrected B mag: 9.222

Total apparent corrected I mag: 7.786

Total apparent corrected B-V colour index: 0.633

Mean surface brightness within isophote 25: 23.634 mag/sq arcsec

Maximum rotational velocity: 222.8 km/sec

Error in log10 rotational velocity: 0.009

Weighted mean max rot velocity: 222.8 km/sec

Error in log10 weighted mean rot vel: 0.009

Corrected 21cm line flux in magnitude: 10.928

21cm index bt-am21c in magnitude: 1.707

Radial velocity information

Heliocentric RV from radio measurements: 846.7 km/sec

Error in radio measurements: 4.0 km/sec

Heliocentric RV from optical measurements: 809.0 km/sec

Error in optical measurements: 57.7 km/sec

Mean heliocentric RV: 846.5 km/sec

Error in mean measurements: 4.0 km/sec

RV with respect to local group: 719.0 km/sec

RV with respect to GSR: 764.7 km/sec

RV corrected for infall of LG onto Virgo: 880.7 km/sec

RV with respect to the 3K CMB: 1186.0 km/sec

Kinematic distance modulus: 30.349

Astrophysical distance modulus: 30.347

Absolute B magnitude: -21.127

Comments

Sky plot

Sky plot

Histogram

Leo Trio, Russ Brick