τ-CMa (Star)

R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 30 arcminutes across.

Finder chart

Please wait
Loading 0/4

Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss

Click and drag the chart above to pan around the sky, or use the mouse wheel to zoom. Click to enlarge.

From South El Monte , τ-CMa is not observable – it will reach its highest point in the sky during daytime and is no higher than 7° above the horizon at dusk.

Begin typing the name of a town near to you, and then select the town from the list of options which appear below.

Name τ-CMa

Object type Star

Other names

τ-CMa
Tau Canis Majoris
30-CMa
30 Canis Majoris
HR 2782^[1]
HD 57061
NSV 3528
HIP 35415^[5]
TYC 6541-4204-1^[4]
Gaia EDR3- 5616537017987940736^[6]

Position

Right ascension:	07^h18^m42^s ^[6]
Declination:	−24°57'15" ^[6]
Constellation:	Canis Major
Magnitude: Variable	4.40 (V) ^[3] 4.18 (BT) ^[2] 4.37 (VT) ^[2] 4.28 (G) ^[6] 4.26 (BP) ^[6] 4.46 (RP) ^[6]
B-V Color (mag):	-0.17
Proper motion (speed):	1.9 mas/yr^[1]
Proper motion (pos ang):	254.7°

Sources

^[1]	Bright Star Catalogue, 5th Revised Ed. (Hoffleit et al. 1991)

^[2]	The Hipparcos Catalogue (ESA 1997)

^[3]	The Tycho Catalogue (ESA 1997)

^[4]	The Tycho-2 Catalogue (Hog et al. 2000)

^[5]	Hipparcos, the new reduction of the raw data (van Leeuwen 2007)

^[6]	Gaia EDR3 (Gaia Collaboration 2020)

Visibility from South El Monte

All times shown in South El Monte local time.

South El Monte

Latitude:
Longitude:
Timezone:

34.05°N
118.05°W
PDT

Color scheme

For more information including contact details, click here.
Our privacy policy is here.
Last updated: 11 May 2026, 18:23 UTC
Website designed by .

Site hosted by

Share