HL Tauri information

HL Tauri
	; Atacama Large Millimeter Array image of HL Tauri
Observation data; Epoch J2000 Equinox J2000
Constellation	Taurus
Right ascension	04h 31m 38.437s
Declination	+18° 13′ 57.65″
Characteristics
Evolutionary stage	Pre-main-sequence star
Spectral type	Class K9
Apparent magnitude (V)	15.1
B−V color index	0.92
V−R color index	0.89
J−H color index	1.45
J−K color index	3.21
Variable type	T Tauri
Astrometry
Proper motion (μ)	RA: +8.0±6.0 mas/yr ; Dec.: -21.8±5.8 mas/yr
Distance	450 ly ; (140 pc)
Database references
SIMBAD	data

HL Tauri (abbreviated HL Tau) is a young T Tauri star^[5] in the constellation Taurus, approximately 450 light-years (140 pc) from Earth^[1] in the Taurus Molecular Cloud.^[6] The luminosity and effective temperature of HL Tauri imply that its age is less than 100,000 years.^[7] At apparent magnitude 15.1,^[3] it is too faint to be seen with the unaided eye. It is surrounded by a protoplanetary disk marked by dark bands visible in submillimeter radiation that may indicate a number of planets in the process of formation.^[2] It is accompanied by the Herbig–Haro object HH 150, a jet of gas emitted along the rotational axis of the disk that is colliding with nearby interstellar dust and gas.^[8]

^ ^a ^b ^c Cite error: The named reference bbc20141106 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference NRAO was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference kwon2011 was invoked but never defined (see the help page).
^ Cite error: The named reference Weintraub1995 was invoked but never defined (see the help page).
^ Cite error: The named reference Stephens2014 was invoked but never defined (see the help page).
^ Cite error: The named reference Boss1989 was invoked but never defined (see the help page).
^ Cite error: The named reference esa20141106 was invoked but never defined (see the help page).

[bbc20141106-1] Cite error: The named reference bbc20141106 was invoked but never defined (see the help page).

[NRAO-2] Cite error: The named reference NRAO was invoked but never defined (see the help page).

[SIMBAD-3] Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

[kwon2011-4] Cite error: The named reference kwon2011 was invoked but never defined (see the help page).

[Weintraub1995-5] Cite error: The named reference Weintraub1995 was invoked but never defined (see the help page).

[Stephens2014-6] Cite error: The named reference Stephens2014 was invoked but never defined (see the help page).

[Boss1989-7] Cite error: The named reference Boss1989 was invoked but never defined (see the help page).

[esa20141106-8] Cite error: The named reference esa20141106 was invoked but never defined (see the help page).

HL Tauri information

and 25 Related for: HL Tauri information

HL Tauri

Taurus molecular cloud

Protoplanetary disk

Atacama Large Millimeter Array

XZ Tauri

Ocean world

CI Tauri

Jane Greaves

GG Tauri

Dust astronomy

HL Tau 76

Andrew Prentice

2014 in science

Capella

Hodgkin lymphoma

Hummus

Mohyeddin

Kintoor

History of film

Artemis

Arnold Chikobava

Oswald Mosley

Tajarhi

Japhetic theory

Solomon

Observation data Epoch J2000 Equinox J2000
Atacama Large Millimeter Array image of HL Tauri^[1]^[2]
Constellation	Taurus
Right ascension	04^h 31^m 38.437^s^[3]
Declination	+18° 13′ 57.65″^[3]
Characteristics
Evolutionary stage	Pre-main-sequence star
Spectral type	Class K9
Apparent magnitude (V)	15.1
B−V color index	0.92
V−R color index	0.89
J−H color index	1.45
J−K color index	3.21
Variable type	T Tauri
Astrometry

Proper motion (μ)	RA: +8.0±6.0^[4] mas/yr Dec.: -21.8±5.8^[4] mas/yr
Distance	450^[1] ly (140 pc)

Database references
SIMBAD	data