W33A

Short description: Protostar in the constellation Sagittarius

W33A  Observation data
Epoch J2000.0 Equinox (celestial coordinates)

Constellation | Sagittarius
Right ascension |  18h 14m 39.5s[1]
Declination | −17° 52′ 02.2″[1]
Database references
SIMBAD| data

W33A is a protostar located approximately 12,000 light-years away from Earth, in the constellation Sagittarius. As a star in the early stages of formation, so has attracted the interest of astronomers, who observed that while the protostar is accumulating material from surrounding clouds of gas and dust, it is simultaneously ejecting fast moving jets of particles from its north and south poles.[2]

## References

1. ↑ 1.0 1.1 "W 33A". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=W+33A.
2. ↑ A Master Blueprint for Making Stars, Science NOW Daily News, 27 January 2010

## External links

* An Inventory of Interstellar Ices toward the Embedded Protostar W33A, by Gibb, E. L.; Whittet, D. C. B.; Schutte, W. A.; Boogert, A. C. A.; Chiar, J. E.; Ehrenfreund, P.; Gerakines, P. A.; Keane, J. V.; Tielens, A. G. G. M.; van Dishoeck, E. F.; and Kerkhof, O., The Astrophysical Journal, Volume 536, Issue 1, pp. 347–356, DOI: 10.1086/308940, Harvard University
* VLTI/MIDI 10 μm Interferometry of the Forming Massive Star W33A, by W. J. de Wit1, M. G. Hoare1, R. D. Oudmaijer1 and J. C. Mottram1, 2007 ApJ 671 L169-L172, doi:10.1086/525253, School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK

* v
* t
* e

Stars of Sagittarius

Bayer|

* α (Rukbat)
* β1 (Arkab Prior)
* β2 (Arkab Posterior)
* γ2 (Alnasl)
* δ (Kaus Media)
* ε (Kaus Australis)
* ζ (Ascella)
* η
* θ1
* θ2
* ι
* κ1
* κ2
* λ (Kaus Borealis)
* μ (Polis)
* ν1 (Ainalrami)
* ν2
* ξ1
* ξ2
* ο
* π (Albaldah)
* ρ1
* ρ2
* σ (Nunki)
* τ
* υ
* φ
* χ1
* χ2
* χ3
* ψ
* ω (Terebellum)

Flamsteed|

* 4
* 5
* 6
* 7
* 9
* 12
* 14
* 15
* 16
* 17
* 18
* 21
* 23
* 24
* 25
* 26
* 28
* 29
* 30
* 31
* 33
* 43 (d)
* 50
* 51 (h1)
* 52 (h2)
* 53
* 54
* 55 (e)
* 56 (f)
* 57
* 59 (b)
* 60 (A)
* 61 (g)
* 62 (c)
* 63
* 65
* 63 Oph

Variable|

* T
* U
* W (γ1)
* X (3)
* Y
* RR
* RS
* RY
* RZ
* VX
* VY
* VZ
* WZ
* XX
* XZ
* YY
* YZ
* AQ
* AS
* AV
* BB
* FN
* GM
* GU
* KW
* MV
* V348
* V350
* V356
* V440
* V505
* V523
* V526
* V617
* V630
* V725
* V732
* V919
* V1017
* V1216
* V1223
* V1647
* V1942
* V3792
* V3795
* V3804
* V3879
* V3885
* V3890
* V3892
* V3894
* V3903 (11)
* V3961
* V3984
* V4021
* V4024
* V4028
* V4029
* V4030
* V4046
* V4050
* V4064
* V4072
* V4089
* V4091
* V4138
* V4140
* V4160
* V4169
* V4190
* V4198
* V4199
* V4200
* V4332
* V4333
* V4371
* V4375
* V4381
* V4387
* V4405
* V4407
* V4434
* V4444
* V4633
* V4641
* V4650
* V4728
* V4743
* V4745
* V4998
* V5112
* V5115
* V5116
* V5558
* V5652
* V5668

HR|

* 6617
* 6679
* 6680
* 6691
* 6692
* 6693
* 6704
* 6716
* 6739
* 6748
* 6762
* 6766
* 6769
* 6777
* 6780
* 6788
* 6798
* 6801
* 6835
* 6836
* 6838
* 6842
* 6864
* 6874
* 6889
* 6907
* 6909
* 6914
* 6919
* 6933
* 6936
* 6944
* 6960
* 6972
* 6988
* 6990
* 6998
* 7026
* 7029
* 7035
* 7038
* 7072
* 7104
* 7126
* 7128
* 7151
* 7159
* 7164
* 7166
* 7168
* 7182
* 7186
* 7195
* 7203
* 7205
* 7211
* 7230
* 7239
* 7240
* 7246
* 7265
* 7276
* 7277
* 7282
* 7316
* 7317
* 7327
* 7330
* 7334
* 7350
* 7355
* 7360
* 7367
* 7378
* 7380
* 7392
* 7398
* 7410
* 7433
* 7443
* 7454
* 7473
* 7491
* 7496
* 7507
* 7532
* 7538
* 7585
* 7616
* 7627
* 7629
* 7630
* 7631
* 7639
* 7643
* 7652
* 7658
* 7659
* 7703
* 7706
* 7725
* 7765
* 7799
* 7801
* 7808

HD|

* 163296
* 163758
* 164604
* 164816
* 165052
* 169142
* 170657
* 171238
* 175390
* 175754
* 180902
* 181342
* 181720
* 183577
* 187085
* 187150
* 190647
* 313846
* 316285

Gliese|

* 745

Other|

* A1742-294
* Ap 1-11
* AS 295
* BD -18 5550
* Bursting Pulsar
* GGD 27
* Great Annihilator
* GRO J1744−28
* GRS 1758-258
* GS 1826-24
* GX 3-1
* GX 5-1
* GX 9-1
* GX 13+1
* Herschel 36
* HETE J1900.1-2455
* IRAS 17423-1755
* IRAS 18162−2048
* GCIRS 3
* GCIRS 7
* GCIRS 8*
* GCIRS 13E
* GCIRS 16SW
* LBV 1806-20
* LS IV -12 111
* MACHO-1997-BLG-41
* MACHO-98-BLG-35
* 2MASS J19513587-3510375
* MOA-2007-BLG-192L
* MOA-2007-BLG-400L
* MOA-2009-BLG-387L
* MOA-2010-BLG-477L
* Nova Sagittarii 1898
* Nova Sagittarii 1982
* OGLE-2003-BLG-235/MOA-2003-BLG-53
* OGLE-2005-BLG-169L
* OGLE-TR-10
* OGLE-TR-56
* Pistol Star
* PSR B1744−24A
* PSR B1749−28
* PSR B1757−24
* PSR B1758−23
* PSR B1800−21
* PSR B1821−24
* PSR B1857−26
* PSR J1747−2958
* PSR J1748−2446ad
* Ross 154
* S0-102
* S2
* Sakurai's Object
* SAX J1747.0−2853
* SAX J1808.4−3658
* SAX J1810.8−2609
* SGR 1806−20
* SWEEPS J175853.92−291120.6
* SWEEPS J175902.00-291323.7
* SWEEPS J175902.67−291153.5
* Swift J1745-26
* SWIFT J1756.9−2508
* Th 4-4
* 4U 1755-33
* 4U 1820-30
* W33A
* WASP-67
* WR 102
* WR 102ea
* WR 102ka
* WR 104
* WR 110
* WR 111
* WR 112
* XTE J1748−288
* XTE J1807−294
* XTE J1810−197
* XTE J1814−338

* List

Coordinates:  18h 14m 39.5s, −17° 52′ 02.2″

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