52 Hydrae

Short description: Star in the constellation Hydra

This page is about l Hydrae. It is not to be confused with I Hydrae, ι (iota) Hydrae, or λ (lambda) Hydrae.

52 Hydrae  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Hydra
Right ascension |  14h 28m 10.42638s[1]
Declination | −29° 29′ 29.8884″[1]
Apparent magnitude (V) | 4.97[2] (5.70 + 5.70 + 10.00)[3]
Characteristics
Evolutionary stage | main sequence[4]
Spectral type | B7/8V[5]
B−V color index | −0.074±0.003[2]
Astrometry
Radial velocity (Rv)| 5.4±3.8[2] km/s
Proper motion (μ)|  RA: −25.23[1] mas/yr
Dec.: −23.03[1] mas/yr
Parallax (π)| 8.29 ± 0.28[1] mas
Distance| 390 ± 10 ly
(121 ± 4 pc)
Absolute magnitude (MV)| −0.43[2]
Details
52 Hya A
Mass| 3.82±0.06[4] M☉
Luminosity| 310.5+24.5
−22.8[4] L☉
Temperature| 12,853±89[4] K
Rotational velocity (v sin i)| 204[4] km/s
Other designations

l Hya, 52 Hya, CD−28°10712, FK5 532, HD 126769, HIP 70753, HR 5407, SAO 182570, ADS 9270, WDS J14282-2929[6]

Database references
SIMBAD| data

52 Hydrae is a triple star system[7] in the constellation Hydra. It has the Bayer designation l Hydrae; 52 Hydrae is the Flamsteed designation.[6] This system is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 4.97.[2] It is a probable (80% chance) member of the Sco OB2 moving group of stars,[8] and is moving away from the Earth with a heliocentric radial velocity of 5 km/s.[2]

The primary component is a binary system[7] consisting of two nearly equal components with an orbital period of around 15 years[9] and an angular separation of 0.1″.[7] It shows a combined stellar classification of B7/8V,[5] which matches a B-type main-sequence star. The third component is a magnitude 10.0 star at a separation of 4.2″[7] with a mass similar to the Sun. It is orbiting the inner pair with a period of around 3,900 years.[9]

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters 38 (5): 331, doi:10.1134/S1063773712050015, Bibcode: 2012AstL...38..331A.
3. ↑ Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22.
4. ↑ 4.0 4.1 4.2 4.3 4.4 Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities", Astronomy & Astrophysics 537: A120, doi:10.1051/0004-6361/201117691, Bibcode: 2012A&A...537A.120Z.
5. ↑ 5.0 5.1 Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode: 1982mcts.book.....H.
6. ↑ 6.0 6.1 "l Hya". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=l+Hya.
7. ↑ 7.0 7.1 7.2 7.3 Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
8. ↑ Rizzuto, Aaron et al. (October 2011), "Multidimensional Bayesian membership analysis of the Sco OB2 moving group", Monthly Notices of the Royal Astronomical Society 416 (4): 3108–3117, doi:10.1111/j.1365-2966.2011.19256.x, Bibcode: 2011MNRAS.416.3108R.
9. ↑ 9.0 9.1 Tokovinin, A. (September 2008), "Comparative statistics and origin of triple and quadruple stars", Monthly Notices of the Royal Astronomical Society 389 (2): 925–938, doi:10.1111/j.1365-2966.2008.13613.x, Bibcode: 2008MNRAS.389..925T.

* v
* t
* e

Hydra constellation

Stars (list)|

| Bayer|

* α (Alphard)
* β
* γ
* δ
* ε (Ashlesha)
* ζ
* η
* θ
* ι (Ukdah)
* κ
* λ
* μ
* ν
* ξ
* ο
* π
* ρ
* σ (Minchir)
* τ1
* τ2
* υ1 (Zhang)
* υ2
* φ1
* φ2
* φ3
* χ1
* χ2
* ψ
* ω

|

Flamsteed|

* 1
* 2
* 3
* 6 (a)
* 9
* 10
* 12 (D)
* 14
* 15
* 17
* 19
* 20
* 21
* 23
* 24
* 25
* 26
* 27 (P)
* 28
* 29
* 33 (A)
* 34
* 37
* 44
* 47
* 48
* 50
* 51 (k)
* 52 (l)
* 54 (m)
* 55
* 56
* 57
* 58 (E)
* 59
* 60
* 3 Crt (b1)
* 5 Crt (b2)
* 6 Crt (b3)
* 8 Crt
* 10 Crt
* 17 Crt (N)
* 18 Crt
* 20 Crt
* 22 Crt
* 23 Crt
* 26 Crt
* 29 Crt
* 14 Lib
* 30 Mon (C)
* 31 Mon (F)
* 2 Sex

Variable|

* R
* S
* U
* V
* W
* X
* RT
* RW
* RX
* SX
* SZ
* TT
* TW
* VX
* VZ
* WZ
* AI
* AV
* CT
* DF
* EX
* EZ
* FG
* GK
* HQ
* HS
* II
* IL
* IY
* KU
* KZ
* LN
* LO
* LQ
* LR
* LV
* LX
* MO
* MX
* NS
* OY
* QT
* V335
* V355
* V406
* V419
* V478

HR|

* 3212
* 3269
* 3271
* 3272
* 3285
* 3288
* 3295
* 3305
* 3338
* 3342
* 3374
* 3378
* 3383
* 3392
* 3411
* 3446
* 3458
* 3478
* 3480
* 3486
* 3493
* 3526
* 3529
* 3538
* 3554
* 3557
* 3564
* 3578
* 3584
* 3590
* 3596
* 3636
* 3638
* 3649
* 3651
* 3653
* 3675
* 3687
* 3704
* 3714
* 3741
* 3749 (G)
* 3750
* 3758
* 3760
* 3762
* 3763
* 3767
* 3772
* 3785
* 3788
* 3794
* 3796
* 3801
* 3802
* 3805
* 3808
* 3810
* 3822
* 3848
* 3858 (I)
* 3862
* 3908
* 3919
* 3921
* 3923 (Felis)
* 3931
* 3963
* 3965
* 3977
* 3986
* 3988
* 3991
* 4005
* 4011
* 4055
* 4068
* 4071
* 4076
* 4117
* 4123
* 4130
* 4149
* 4152
* 4157
* 4158
* 4162
* 4172
* 4190
* 4225
* 4261
* 4282
* 4298
* 4307
* 4328
* 4331
* 4339
* 4346
* 4373
* 4445
* 4498
* 4525
* 4542
* 4548
* 4553
* 4558
* 4579
* 4612
* 4628
* 4651
* 4723
* 4735
* 4774
* 4803
* 4810
* 4839
* 4857
* 4860
* 4918
* 4978
* 5090
* 5097
* 5098
* 5120
* 5128
* 5166
* 5167
* 5197
* 5209
* 5228
* 5246
* 5265
* 5309
* 5314
* 5324
* 5356
* 5399
* 5565

HD|

* 68667
* 72659
* 74156
* 74685
* 75098
* 75217
* 76027
* 76478
* 78614
* 79481
* 79994
* 82943
* 83352
* 86226
* 86264
* 88806
* 90156
* 97344
* 105113
* 106500
* 107869
* 117033
* 121758
* 125279

Gliese|

* Gliese 357
* Gliese 433
* Gliese 453
* GJ 2066
* GJ 3517
* GJ 3634

Other|

* BD -3 2525
* BD-22 3467
* CE 315
* EC 14026−2647
* HAT-P-35
* HAT-P-42
* HE 1327-2326
* IRC -20197
* Kelu-1
* LHS 2065
* LHS 3003
* 2MASS 0835-08
* 2MASS 1114−2618
* PSR B0820+02
* PSR B0834+06
* TWA 5
* WASP-25
* WASP-36
* WISE 0855−0714

Star clusters|

| Open|

* Messier 48

|

Globular|

* Messier 68
* NGC 5694

Nebulae|

| Planetary|

* Abell 33
* NGC 2610
* NGC 3242

|

Galaxies|

| Messier|

* 83

|

NGC|

* 2555
* 2561
* 2574
* 2583
* 2584
* 2585
* 2590
* 2612
* 2615
* 2616
* 2617
* 2618
* 2642
* 2644
* 2662
* 2665
* 2674
* 2690
* 2695
* 2696
* 2697
* 2698
* 2699
* 2706
* 2708
* 2709
* 2713
* 2716
* 2718
* 2721
* 2722
* 2723
* 2729
* 2754
* 2758
* 2763
* 2765
* 2781
* 2784
* 2811
* 2815
* 2817
* 2835
* 2847
* 2848
* 2850
* 2851
* 2855
* 2858
* 2861
* 2863
* 2864
* 2865
* 2868
* 2876
* 2877
* 2878
* 2881
* 2884
* 2889
* 2890
* 2897
* 2898
* 2900
* 2902
* 2907
* 2917
* 2920
* 2921
* 2924
* 2935
* 2936
* 2937
* 2945
* 2947
* 2951
* 2952
* 2956
* 2960
* 2962
* 2975
* 2983
* 2986
* 2989
* 2992
* 2993
* 2996
* 3025
* 3028
* 3030
* 3037
* 3045
* 3052
* 3054
* 3058
* 3072
* 3076
* 3078
* 3081
* 3085
* 3091
* 3096
* 3109
* 3112
* 3124
* 3127
* 3128
* 3133
* 3138
* 3139
* 3140
* 3141
* 3143
* 3145
* 3146
* 3171
* 3176
* 3178
* 3200
* 3203
* 3208
* 3233
* 3240
* 3280
* 3282
* 3285
* 3290
* 3295
* 3296
* 3297
* 3305
* 3307
* 3308
* 3309
* 3311
* 3312
* 3313
* 3314
* 3315
* 3316
* 3321
* 3331
* 3335
* 3336
* 3355
* 3369
* 3383
* 3390
* 3393
* 3402
* 3404
* 3409
* 3420
* 3421
* 3450
* 3453
* 3463
* 3464
* 3483
* 3585
* 3606
* 3617
* 3621
* 3673
* 3717
* 3885
* 3904
* 3923
* 3936
* 4087
* 4105
* 4106
* 4304
* 4456
* 4806
* 4831
* 4955
* 4965
* 4968
* 4970
* 4980
* 4993
* 5042
* 5048
* 5051
* 5061
* 5078
* 5085
* 5101
* 5135
* 5150
* 5152
* 5153
* 5182
* 5260
* 5264
* 5328
* 5330
* 5393
* 5464
* 5495
* 5556
* 5592
* 5626

Other|

* Arp 7
* ESO 510-G13
* GAMA202627
* IC 4374
* MRC 1138-262
* TN J0924-2201
* Tololo 1247-232

Galaxy clusters|

* Abell 754
* Abell 3411
* Abell 3412

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