Wolf 489

Short description: Star in the constellation Virgo

Coordinates:  13h 36m 31.81s, +03° 40′ 45.9″

Wolf 489  Observation data
Equinox J2000.0]] (ICRS)

Constellation | Virgo[1]
Right ascension |  13h 36m 31.85s[2]
Declination | +03° 40′ 45.9″[2]
Apparent magnitude (V) | 14.66[3]
Characteristics
Evolutionary stage | white dwarf[4]
Spectral type | DZ10.0[3][5]
Apparent magnitude (B) | 15.59[6]
Apparent magnitude (V) | 14.63[6]
Apparent magnitude (R) | 14.0[6]
Apparent magnitude (I) | 14.1[6]
Apparent magnitude (J) | 13.06[6]
Apparent magnitude (H) | 12.82[6]
Apparent magnitude (K) | 12.69[6]
Astrometry
Proper motion (μ)|  RA: −3735.839[2] mas/yr
Dec.: −1113.581[2] mas/yr
Parallax (π)| 119.7566 ± 0.0304[2] mas
Distance| 27.235 ± 0.007 ly
(8.350 ± 0.002 pc)
Absolute magnitude (MV)| 15.04[4]
Details
Mass| 0.55±0.03[3] M☉
Radius| 0.013[3][note 1] R☉
Luminosity| 0.000095[4] L☉
Surface gravity (log g)| 7.95±0.02[3] cgs
Temperature| 5,030±120[3] K
Age| 5.19[5][note 2] Gyr
Other designations

WD 1334+039,[3][5] Wolf 489,[6] Gliese 518,[6] LHS 46,[3] LFT 1023,[6] LTT 13961,[6] NLTT 34618,[6] G 062-053,[7] G 62-53,[6] G 64-4,[6] EGGR 100,[6] 2MASS J13363181+0340458,[6] USNO-B1.0 0936-00229354[6]

Database references
SIMBAD| data

Wolf 489 (WD 1334+039, LHS 46, G 062-053, Gliese 518) is a nearby degenerate star (white dwarf) of spectral class DZ10.0[3][5]), the single known component of the system, located in the constellation Virgo.

## Contents

* 1 Distance
* 2 Physical parameters
* 3 Notes
* 4 See also
* 5 References

## Distance

Wolf 489, probably, is the 12th closest white dwarf, or, possibly, 9th–14th (see Gliese 293, GJ 1087, Gliese 915, GJ 1276 and Gliese 318). Its trigonometric parallax from YPC (Yale Parallax Catalog) is 121.4 ± 3.4 mas, corresponding to a distance 8.24 ± 0.23 pc, or 26.87 ± 0.75 ly.[7]

Wolf 489 parallax data  Source | Parallax, mas | Distance, pc | Distance, ly

|
|
|

Woolley (1970)[8] | 135±12 | 7.4±0.7 | 24.2±2.1
GJ, 3rd version[9] | 122.2±3.9 | 8.18±0.26 | 26.69±0.85
YPC, 4th edition[7] | 121.4±3.4 | 8.24±0.23 | 26.87±0.75
Gaia DR3, 2023[2] | 119.7566±0.0304 | 8.3503±0.0002 | 27.235±0.007

## Physical parameters

Wolf 489's mass is 0.55 ± 0.03 Solar masses,[3] its surface gravity is 107.95 ± 0.02 (8.91 · 107) cm·s−2,[3] or approximately 91 000 of Earth's, corresponding to a radius 9089 km, or 143% of Earth's.

Wolf 489's temperature is 5030 ± 120 K[3] (comparable with that of early K-type main sequence stars); its cooling age, i. e. age as degenerate star (not including lifetime as main sequence star and as giant star) is 5.19 Gyr.[5] Wolf 489 should appear white with a slight shade of yellow, nearly the same color as a K-type main sequence star.

## Notes

1. ↑ From surface gravity and mass.
2. ↑ White dwarf cooling age, i. e. age as degenerate star (not including lifetime as main sequence star and as giant star)

## See also

* List of star systems within 25–30 light-years

## References

1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R Constellation record for this object at VizieR.
2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 Holberg, J. B.; Sion; Oswalt; McCook; Foran; Subasavage (2008). "A New Look at the Local White Dwarf Population". The Astronomical Journal 135 (4): 1225–1238. doi:10.1088/0004-6256/135/4/1225. Bibcode: 2008AJ....135.1225H. https://commons.erau.edu/cgi/viewcontent.cgi?article=1948&context=publication.
4. ↑ 4.0 4.1 4.2 Limoges, M. -M.; Bergeron, P.; Lépine, S. (2015). "Physical Properties of the Current Census of Northern White Dwarfs within 40 pc of the Sun". The Astrophysical Journal Supplement Series 219 (2): 19. doi:10.1088/0067-0049/219/2/19. Bibcode: 2015ApJS..219...19L.
5. ↑ 5.0 5.1 5.2 5.3 5.4 Sion, Edward M.; Holberg; Oswalt; McCook; Wasatonic (2009). "The White Dwarfs within 20 Parsecs of the Sun: Kinematics and Statistics". The Astronomical Journal 138 (6): 1681–1689. doi:10.1088/0004-6256/138/6/1681. Bibcode: 2009AJ....138.1681S.
6. ↑ 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 6.15 6.16 "GJ 518 -- White Dwarf". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Gliese+518.
7. ↑ 7.0 7.1 7.2 Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)
8. ↑ Stars within 25 pc of the Sun (Woolley+ 1970)
9. ↑ Nearby Stars, Preliminary 3rd Version (Gliese+ 1991)

* v
* t
* e

Virgo constellation

Stars
(list)|

| Bayer|

* α (Spica)
* β (Zavijava)
* γ (Porrima)
* δ (Minelauva)
* ε (Vindemiatrix)
* ζ (Heze)
* η (Zaniah)
* θ
* ι (Syrma)
* κ (Kang)
* λ (Khambalia)
* μ
* ν
* ξ
* ο
* π
* ρ
* σ
* τ
* υ
* φ (Elgafar)
* χ
* ψ
* ω

|

Flamsteed|

* 4 (A1)
* 6 (A2)
* 7 (b)
* 10
* 11
* 12
* 13
* 14
* 16 (c)
* 17
* 20
* 21 (q)
* 25 (f)
* 27
* 28
* 31 (d1)
* 32 (d2)
* 33
* 34
* 35
* 37
* 38
* 39
* 41
* 44 (k)
* 46
* 48
* 49
* 50
* 53
* 54
* 55
* 56
* 57
* 58
* 59 (e)
* 61
* 62
* 63
* 64
* 65
* 66
* 68 (i)
* 69
* 70
* 71
* 72
* 73
* 74 (l)
* 75
* 76 (h)
* 77
* 78 (o)
* 80
* 81
* 82 (m)
* 83
* 84
* 85
* 86
* 87
* 88
* 89
* 90 (p)
* 92
* 94
* 95
* 96
* 97
* 103
* 104
* 106
* 108
* 109
* 110
* 1 Ser (M)
* 2 Ser

Variable|

* R
* S
* W
* RS
* RT
* SS
* ST
* SW
* TW
* TY
* UU
* UV
* UW
* UY
* XX
* AG
* AH
* AL
* AW
* AX
* AZ
* BB
* BF
* BH
* BK
* CE
* CS
* CU
* CX
* DK
* DL
* DM
* DT
* EP
* EQ
* ET
* FF
* FG
* FO
* FS
* FT
* FW
* GL
* GK
* GR
* HS
* HT
* HU
* HV
* HW
* IM
* IN
* IP
* IQ
* IS
* IV
* LN
* NN
* NY
* OU
* PP
* PX
* QS
* QZ

HR|

* 4478
* 4484
* 4510
* 4533
* 4544
* 4580
* 4587
* 4591
* 4598
* 4613
* 4657
* 4722
* 4741
* 4770
* 4772
* 4805
* 4837
* 4856
* 4877
* 4896
* 4901
* 4935
* 4957 (g)
* 4959
* 4960
* 4986
* 5013
* 5014
* 5031
* 5033
* 5037
* 5053
* 5059
* 5078
* 5086
* 5106 (y)
* 5114
* 5178
* 5183
* 5205
* 5233
* 5258
* 5272
* 5275
* 5276
* 5277
* 5283
* 5307
* 5317
* 5322
* 5332
* 5341
* 5342
* 5344
* 5353
* 5368
* 5384
* 5392
* 5418
* 5424
* 5496
* 5536
* 5584
* 5631

HD|

* 102195
* 102329
* 104078
* 104755
* 106038
* 106252
* 106270
* 106515
* 107148
* 107794
* 109271
* 112495
* 114783
* 116429
* 122577
* 124973
* 125490
* 125612
* 126614
* 128563
* 130322
* 133600

Other|

* EC 14012-1446
* G 64-12
* HAT-P-26
* K2-19
* PG 1159-035
* PG 1323-086
* PG 1325+101
* PSR B1257+12 (Lich)
* Ross 128
* SDSS J121209.31+013627.7
* SDSS J1229+1122
* ULAS J133553.45+113005.2
* WASP-16
* WASP-24
* WASP-37
* WASP-39 (Malmok)
* WASP-40/HAT-P-27
* WD 1145+017
* Wolf 424
* Wolf 485A
* Wolf 489

Star
clusters|

| Open|

* NGC 5634

|

Globular|

* HVGC-1
* Koposov I

Nebulae|

| Planetary|

* Abell 36

|

Galaxies|

| Messier|

* 49
* 58
* 59
* 60
* 61
* 84
* 86
* 87
* 89
* 90
* 104 (Sombrero Galaxy)

|

NGC|

* 3776
* 3817
* 3818
* 3833
* 3843
* 3848
* 3849
* 3852
* 3863
* 3876
* 3907
* 3907B
* 3914
* 3915
* 3952
* 3976
* 3976A
* 3979
* 4006
* 4012
* 4029
* 4030
* 4043
* 4044
* 4045
* 4045A
* 4058
* 4063
* 4067
* 4073
* 4075
* 4077
* 4079
* 4082
* 4083
* 4107
* 4116
* 4119
* 4123
* 4129
* 4139
* 4164
* 4165
* 4168
* 4176
* 4178
* 4179
* 4180
* 4191
* 4193
* 4197
* 4200
* 4201
* 4202
* 4206
* 4207
* 4215
* 4216
* 4223
* 4224
* 4233
* 4234
* 4235
* 4240
* 4241
* 4246
* 4247
* 4249
* 4252
* 4255
* 4257
* 4259
* 4260
* 4261
* 4264
* 4266
* 4267
* 4268
* 4269
* 4270
* 4273
* 4276
* 4277
* 4279
* 4281
* 4282
* 4285
* 4287
* 4289
* 4292
* 4292A
* 4294
* 4296
* 4297
* 4299
* 4300
* 4301
* 4305
* 4306
* 4307
* 4309
* 4309A
* 4313
* 4316
* 4318
* 4320
* 4324
* 4326
* 4330
* 4333
* 4334
* 4339
* 4341
* 4342
* 4343
* 4348
* 4351
* 4352
* 4353
* 4356
* 4360
* 4365
* 4366
* 4368
* 4370
* 4371
* 4376
* 4378
* 4380
* 4385
* 4387
* 4388
* 4390
* 4402
* 4403
* 4404
* 4410
* 4411
* 4412
* 4413
* 4415
* 4416
* 4417
* 4418
* 4420
* 4422
* 4423
* 4424
* 4425
* 4428
* 4429
* 4430
* 4431
* 4432
* 4433
* 4434
* 4436
* 4440
* 4442
* 4445
* 4451
* 4452
* 4453
* 4454
* 4457
* 4458
* 4461
* 4464
* 4465
* 4466
* 4467
* 4469
* 4470
* 4476
* 4478
* 4480
* 4482
* 4483
* 4484
* 4486A
* 4486B
* 4487
* 4488
* 4491
* 4492
* 4493
* 4496
* 4496B
* 4497
* 4503
* 4504
* 4517
* 4517A
* 4518
* 4518B
* 4519
* 4519A
* 4520
* 4522
* 4526
* 4527
* 4528
* 4531
* 4532
* 4533
* 4535
* 4535A
* 4536
* 4538
* 4541
* 4543
* 4544
* 4546
* 4550
* 4551
* 4564
* 4567
* 4568
* 4570
* 4576
* 4577
* 4578
* 4580
* 4581
* 4584
* 4586
* 4587
* 4588
* 4592
* 4593
* 4596
* 4597
* 4598
* 4599
* 4600
* 4602
* 4604
* 4606
* 4607
* 4608
* 4612
* 4620
* 4623
* 4626
* 4628
* 4629
* 4630
* 4632
* 4636
* 4637
* 4638
* 4639
* 4640
* 4640B
* 4641
* 4642
* 4643
* 4747 ([[Arp 116]])
* 4653
* 4654
* 4658
* 4660
* 4663
* 4664
* 4666
* 4668
* 4671
* 4674
* 4678
* 4680
* 4682
* 4684
* 4688
* 4690
* 4691
* 4694
* 4697
* 4698
* 4699
* 4700
* 4701
* 4703
* 4705
* 4708
* 4713
* 4716
* 4717
* 4718
* 4720
* 4731
* 4731A
* 4733
* 4734
* 4739
* 4742
* 4746
* 4753
* 4754
* 4757
* 4759A
* 4760
* 4761
* 4762
* 4764
* 4765
* 4766
* 4770
* 4771
* 4772
* 4773
* 4775
* 4777
* 4778
* 4779
* 4780
* 4780A
* 4781
* 4784
* 4786
* 4790
* 4791
* 4795
* 4796
* 4799
* 4803
* 4808
* 4809
* 4810
* 4813
* 4818
* 4820
* 4822
* 4823
* 4825
* 4829
* 4830
* 4836
* 4838
* 4843
* 4845
* 4847
* 4855
* 4856
* 4862
* 4863
* 4866
* 4877
* 4878
* 4880
* 4885
* 4887
* 4888
* 4890
* 4897
* 4899
* 4900
* 4902
* 4904
* 4915
* 4918
* 4920
* 4924
* 4925
* 4928
* 4933
* 4933C
* 4939
* 4941
* 4942
* 4948
* 4948A
* 4951
* 4958
* 4969
* 4975
* 4981
* 4984
* 4989
* 4990
* 4991
* 4992
* 4995
* 4996
* 4997
* 4999
* 5006
* 5010
* 5013
* 5015
* 5017
* 5018
* 5019
* 5020
* 5022
* 5027
* 5028
* 5030
* 5031
* 5035
* 5036
* 5037
* 5038
* 5039
* 5044
* 5046
* 5047
* 5049
* 5050
* 5054
* 5058
* 5059
* 5060
* 5066
* 5068
* 5071
* 5072
* 5073
* 5075
* 5076
* 5077
* 5079
* 5080
* 5084
* 5087
* 5088
* 5094
* 5095
* 5097
* 5099
* 5104
* 5105
* 5106
* 5111
* 5115
* 5118
* 5119
* 5122
* 5125
* 5129
* 5130
* 5132
* 5133
* 5134
* 5136
* 5137
* 5146
* 5147
* 5148
* 5159
* 5165
* 5167
* 5170
* 5171
* 5174
* 5176
* 5177
* 5178
* 5179
* 5181
* 5183
* 5184
* 5185
* 5186
* 5191
* 5192
* 5196
* 5197
* 5202
* 5203
* 5207
* 5208
* 5209
* 5210
* 5211
* 5212
* 5213
* 5221
* 5222
* 5224
* 5226
* 5227
* 5230
* 5231
* 5232
* 5235
* 5241
* 5245
* 5246
* 5247
* 5252
* 5254
* 5261
* 5270
* 5285
* 5300
* 5306
* 5324
* 5327
* 5329
* 5331
* 5334
* 5335
* 5338
* 5339
* 5343
* 5345
* 5348
* 5356
* 5360
* 5363
* 5364
* 5366
* 5369
* 5373
* 5374
* 5382
* 5384
* 5386
* 5387
* 5392
* 5400
* 5420
* 5442
* 5468
* 5470
* 5472
* 5476
* 5478
* 5491A
* 5491B
* 5493
* 5496
* 5501
* 5506
* 5507
* 5510
* 5521
* 5534
* 5537
* 5549
* 5551
* 5552
* 5554
* 5555
* 5560
* 5563
* 5566
* 5569
* 5573
* 5574
* 5575
* 5576
* 5577
* 5584
* 5599
* 5604
* 5618
* 5619
* 5619C
* 5636
* 5638
* 5645
* 5652
* 5661
* 5668
* 5674
* 5679
* 5679A
* 5679C
* 5679D
* 5680
* 5690
* 5691
* 5692
* 5701
* 5705
* 5713
* 5718
* 5719
* 5725
* 5733
* 5738
* 5740
* 5746
* 5750
* 5765
* 5765B
* 5770
* 5774
* 5775
* 5776
* 5806
* 5811
* 5813
* 5814
* 5831
* 5838
* 5839
* 5845
* 5846
* 5846A
* 5847
* 5848
* 5850
* 5854
* 5855
* 5864
* 5865
* 5869

Other|

* A1689-zD1
* Abell 1835 IR1916
* Arp 240 (NGC 5257 and NGC 5258)
* Arp 271 (NGC 5426 and NGC 5427)
* BR 1202-0725
* 3C 273
* 3C 279
* 3C 298
* 4C 04.42
* Eyes Galaxies
* GR 8
* IC 3258
* IC 3328
* IRAS 12212+0305
* IRAS 13197−1627
* M60-UCD1
* Markarian 50
* Markarian 1318
* PG 1216+069
* PG 1244+026
* PG 1254+047
* PG 1307+085
* PG 1416−129
* PG 1426+015
* PKS 1148-001
* PKS 1167+014
* PKS 1217+023
* PKS 1229−021
* PKS 1302−102
* PKS 1335−127
* PKS 1402+044
* PKS 1405−076
* QSO B1208+1011
* QSO B1243−072
* QSO B1246−057
* QSO B1331+170
* RXJ1242−11
* SMM J14011+0252
* UM 448
* UM 461
* UM 462

Galaxy
clusters|

* Abell 1644
* Abell 1650
* Abell 1651
* Abell 1689
* Abell 1750
* Abell 1835
* Abell 2029
* Abell 2147
* HCG 62
* MKW 4
* NGC 5044 group
* RX J1347.5−1145
* Virgo Cluster

Other|

* GRB 930131
* GRB 030328
* GRB 050408
* GRB 050801
* GRB 080310
* North Polar Spur
* SN 1960F
* SN 1981B
* SN 1990B
* SN 1990N
* SN 1991T
* SN 1991bg
* SN 1994D
* SN 1999br
* SN 2002cx
* SN 2007bi
* U1.11

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Original source: https://en.wikipedia.org/wiki/Wolf 489. Read more

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