Planetary Nebula Haro 3-29

Haro 3-29
Haro 3-29: Planetary nebula in Taurus; 500 mm Cassegrain 3625 mm f/7.2, SBIG STL11K; 130+40+40+40 min LRGB; Bernese Highlands; © 2017 Radek Chromik [32]


In 1953, the Mexican astronomer Guillermo Haro Barraza examined the Taurus-Auriga-Orion region with the 64 cm Schmidt camera at the Tonantzintla Observatory in Mexico. Previously, Alfred Harrison Joy at the Mount Wilson Observatory had discovered numerous stars with strong Hα emission lines, so-called T-Tauri stars. These are young stars that are uneven from a disk of dust. Haro discovered 75 more Hα stars on the photo plates exposed for up to 90 minutes. To number 29 he added the following note: «Emission nebula. The light lines N1 and N2 are present.» [451] The American astronomer Nicholas Ulrich Mayall finally recognized in 1964 that this was a planetary nebula. [144]

Physical Properties

On Simbad, a distance of around 4.6 kpc (around 15'000 light years) is found. The apparent brightness in different bands is: B = 15.7 mag, J = 14.5 mag, H = 13.8 mag, K = 12.9 mag. [145]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
Designations PN G174.2-14.6: H 3-29, PK 174-14.1, ARO 214
Right Ascension (J2000.0) 04h 37m 21s
Declination (J2000.0) +25° 03' 00"
Dimensions 20." (optical), 17." (radio)
Radial Velocity -19.9 ± 2.0 km/s
C-Star Designations AG82 33, GL Tau
C-Star Magnitude B: >18.8, V: >18.6
Discoverer MAYALL 1964

Finder Chart

The planetary nebula Haro 3-29 is located in the constellation Taurus. The 6.2 mag bright star HR 1477 helps to find it, from which you hop west to the PN. The best observation time is August to March.

Finder Chart Planetary Nebula Haro 3-29
Planetary Nebula Haro 3-29 in constellation Taurus. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 15°