Sh 2-307

Sharpless 2-307
Nebula
Observation data: J2000 epoch
Right ascension	07h 35m 32s
Declination	−18° 45′ 33″
Distance	2650 pc
Apparent magnitude (V)	15.17
Apparent dimensions (V)	6' x 6'
Constellation	Puppis
Designations	BRAN 50, Gum 7, IRAS 07333-1838, RCW 12, LBN 1051
	See also: Lists of nebulae

Last updated October 19, 2025

Sh 2-307 is a nebula in Puppis. It contains the potential infrared cluster [DBS2003] 8.^[3] It is located in the Perseus Arm.^[4] Although appearing small visuallly, longer exposure will reveal the bright area is only the central portion of the nebula, and it is much larger. ^[5]

References

↑ "Sh 2-307".
↑ "Sharpless (Sh2) - Astrobasics". 13 September 2022.
↑ Roman-Lopes, A. (2009). "SOAR-OSIRIS observations of the Sh 2-307 HII region: Triggered star formation beyond the Solar Circle". Monthly Notices of the Royal Astronomical Society. 398 (3): 1368. arXiv: 0905.3822 . Bibcode:2009MNRAS.398.1368R. doi: 10.1111/j.1365-2966.2009.15119.x .
↑ "Sh 2-307".
↑ "CCD Images of the Sharpless Catalog".

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[1] "Sh 2-307".

[2] "Sharpless (Sh2) - Astrobasics". 13 September 2022.

[3] Roman-Lopes, A. (2009). "SOAR-OSIRIS observations of the Sh 2-307 HII region: Triggered star formation beyond the Solar Circle". Monthly Notices of the Royal Astronomical Society. 398 (3): 1368. arXiv: 0905.3822 . Bibcode:2009MNRAS.398.1368R. doi: 10.1111/j.1365-2966.2009.15119.x .

[4] "Sh 2-307".

[5] "CCD Images of the Sharpless Catalog".

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v t e Gum Catalog
Colin Stanley Gum
Gum 1 Gum 2 Gum 3 Gum 4 Gum 5 Gum 6 Gum 7 Gum 8 Gum 9 Gum 10 Gum 12 Gum 13 Gum 14 Gum 15 Gum 16 Gum 17 Gum 18 Gum 19 Gum 20 Gum 21 Gum 22 Gum 23 Gum 24 Gum 25 Gum 26 Gum 27 Gum 28 Gum 29 Gum 30 Gum 31 Gum 32 Gum 33 Gum 34 Gum 35 Gum 36 Gum 37 Gum 38 Gum 39 Gum 40 Gum 41 Gum 42 Gum 43 Gum 44 Gum 45 Gum 46 Gum 47 Gum 48 Gum 49 Gum 50 Gum 51 Gum 52 Gum 53 Gum 54 Gum 55 Gum 56 Gum 57 Gum 58 Gum 59 Gum 60 Gum 61 Gum 62 Gum 63 Gum 64 Gum 65 Gum 66 Gum 67 Gum 68 Gum 69 Gum 70 Gum 71 Gum 72 Gum 73 Gum 74 Gum 75 Gum 76 Gum 77 Gum 78 Gum 79 Gum 80 Gum 81 Gum 82 Gum 83 Gum 84 Gum 85
See also: Gum Nebula

Nebula
Observation data: J2000 epoch
Right ascension	07^h 35^m 32^s
Declination	−18° 45′ 33″^[1]
Distance	2650 pc
Apparent magnitude (V)	15.17
Apparent dimensions (V)	6' x 6'^[2]
Constellation	Puppis

Designations	BRAN 50, Gum 7, IRAS 07333-1838, RCW 12, LBN 1051
See also: Lists of nebulae