Basic object information

Name: M 20
Popular name: Trifid Nebula
Type of object: Bright nebula
Magnitude: 6.3
Size: 28.0'

Position (epoch of date)

Right ascension: 18h 2m 54s
Declination: -22° 58' 23"
Constellation: Sagittarius

Local information

Altitude:  17° 34' 32"
Azimuth: 145° 31' 27"

Rise: 0h 32m 54s  
Transit: 5h 7m 50s
Set: 9h 42m 45s  

Star atlas chart numbers:

Herald-Bobroff Astroatlas, Chart C-61
Millennium Star Atlas, Charts 1391-1392 (Vol III)
Sky Atlas 2000.0, Chart 22
Uranometria 2000 Chart 339, Vol 2


Revised NGC/IC Catalog Data

Wolfgang Steinicke, Feb 2001

Names and designations

M 20
NGC 6514
OCL 23
ESO 521-N*13

Type of object: Emission nebula

Catalog position for epoch J2000.0

Right ascension:	18h 02m 42.0s
Declination:		-22° 58' 19"


Object information

Magnitude: 6.3
Size: 28.0'

Object classification: EN+OCL  
Remarks: LBN 27, Trifid nebula

Saguaro Astronomy Club v7.2 Catalog Data

Saguaro Astronomy Club, August 2000

Names and designations

M 20
NGC 6514

Type of object: Cluster with nebulosity

Catalog position for epoch J2000.0

Right ascension:	18h 02m 42.0s
Declination:		-22° 58' 00"

Constellation: Sagittarius

Object information

Magnitude: 6.3
Size: 28.0'
Number of stars: 67
Magnitude of brightest star: 6.0

Object classification: E+*
Description: vB,vL,Trifid,D* inv
Notes: Trifid nebula;sev dark lanes;H IV 41 & V 10;D* HN 40 invl