From Wikipedia, the free encyclopedia
This is a list of coolest stars and
brown dwarfs discovered, arranged by decreasing temperature. The stars with
temperatures lower than 2,000
K are included.
Kirkpatrick et al. 2021
[1] has a more complete list of nearby objects with a temperature below 2,400 K. Objects with a temperature below 500 K from this paper were included in this list.
List
Star name
Temperature
(
K )
Spectral type
Distance (
light years )
Notes
WISE 0855–0714
285
Y4
7.426± 0.039
[2]
WISE 0336-0143B
[3]
295± 10
[4]
Y1?
32.7
[1]
spectral type is not yet published, but should be around Y1 if we assume
MIRI F480M is similar to W2 and by using Figure 13 from Kirkpatrick et al. 2012
[5] Might be a later spectral type.
WISEA 0830+2837
300-350
[6]
>Y1
[1]
26.87
[1]
uncertain parallax and spectral type is an estimate
CWISEP 0238-1332
[1]
367± 79
>Y1
58.66
uncertain parallax and spectral type is an estimate
CWISEP 0402-2651
[1]
367± 79
>Y1
39.53
uncertain parallax and spectral type is an estimate
WISEU 0503-5648
[1]
367± 79
>Y1
33.18
spectral type is an estimate
CWISEP 0940+5233
[1]
367± 79
>Y1
43.49
uncertain parallax and spectral type is an estimate
WISEA 1257+7153
[1]
367± 79
>Y1
54.18
spectral type is an estimate
CWISEP 1446-2317
[1]
367± 79
>Y1
37.75
uncertain parallax and spectral type is an estimate
WISEA 1930-2059
[1]
367± 79
>Y1
30.67
spectral type is an estimate
CWISEP 1935-1546
[1]
367± 79
>Y1
47.06
spectral type is an estimate
CWISEP 2230+2549
[1]
367± 79
>Y1
52.44
uncertain parallax and spectral type is an estimate
CWISEP 2256+4002
[1]
367± 79
>Y1
32.04
spectral type is an estimate
CFBDSIR 1458+10B
370
Y0
104
WISE 0825+2805
[1]
376± 88
Y0.5
21.37
WD 0806-661B
[1]
377± 88
Y1
62.80
spectral type is an estimate
WISE 0350-5658
[1]
388± 88
Y1
18.49
WISEA 2354+0240
[1]
388± 88
Y1
24.97
WISE 2209+2711
[1]
389± 88
Y0:
20.17
WISE 0647-6232
[1]
393± 88
Y1
32.78
WISEPA 1541-2250
[1]
395± 88
Y1
19.54
WISE 1828+2650
406± 88
[1]
Y2V
[7]
32.5
Temperature could be lower. If it is a binary, its components could be as cold as about 275-350 K.
[8]
WISE 0535-7500
[1]
410± 88
>=Y1:
47.48
WISE 1405+5534
411± 88
[1]
Y0.5(pec?)
[1]
20.62
CWISEP 0321+6932
[1]
412± 79
Y0.5
47.61
spectral type is an estimate
WISE 1639-6847
[1]
412± 88
Y0pec
14.85
CWISEP 2356-4814
[1]
412± 79
Y0.5
56.62
spectral type is an estimate
WISE 0336-0143A
[3]
440± 24
[9]
Y0
[1]
32.7
[1]
WISEPA 1738+2732
[1]
450± 88
Y0
24.92
WISEPA 0410+1502
[1]
451± 88
Y0
21.56
WISE 2220-3628
[1]
452± 88
Y0
34.15
WISE 1534-1043
453± 77
[10]
sdY?
53
possibly
halo brown dwarf
WISE 1206+8401
[1]
454± 88
Y0
38.51
WISE 0146+4234B
[1]
460± 79
Y0
63.09
WISEA 0302-5817
[1]
460± 79
Y0:
54.45
CWISEP 0634+5049
[1]
460± 79
Y0
52.61
spectral type is an estimate
CWISEP 0859+5349
[1]
460± 79
Y0
60.62
spectral type is an estimate
CWISE 0925-4720
[1]
460± 79
Y0
34.96
spectral type is an estimate
CWISEP 0938+0634
[1]
460± 79
Y0
61.31
uncertain parallax and spectral type is an estimate
CWISEP 1047+5457
[1]
460± 79
Y0
43.37
spectral type is an estimate
CWISE 1121-6232
[1]
460± 79
Y0
33.69
spectral type is an estimate
WISEA 1141-3326
[1]
460± 79
Y0
31.36
WISE 1217+1626 B
460± 79
[1]
Y0-0.5
33
CWISE 1531-3306
[1]
460± 79
Y0
55.37
spectral type is an estimate
WISENF 1936+0408
[1]
460± 79
Y0
28.64
spectral type is an estimate
CWISEP 2011-4812
[1]
460± 79
Y0
45.94
spectral type is an estimate
WISEA 2243-1458
[1]
460± 79
Y0
47,75
spectral type is an estimate
WISE 1112-3857
[1]
461± 88
T9
31.79
WISE 0734-7157
[1]
462± 88
Y0
43.78
WISE 0713-2917
[1]
464± 88
Y0
29.84
WISEPC 2056+1459
[1]
464± 88
Y0
23.16
WISE 0304-2705
[1]
465± 88
Y0~pec
44.62
WISE 0359-5401
467+16 −18
[11]
Y0
[1]
44.31
[1]
WISE 0943+3607
[1]
468± 88
T9.5
33.59
WISE 0833+0052
[1]
472± 88
(sd)T9
40.92
possible
subdwarf
WISE 1542+2230
[1]
472± 88
T9.5
38.69
WISE 0811-8051
[1]
479± 88
T9.5:
32.91
WISEPA 2134-7137
[1]
481± 88
T9~pec
29.73
possible subdwarf
WISE 2212-6931
[1]
487± 88
T9
40.47
WISEPA 0751-7634
[1]
492± 88
T9
33.32
WISE 0335+4310
[1]
492± 88
T9
38.46
WISE 1217+1626 A
575
T8.5-9
33
UGPS J0521+3640
600–650
T8.5
26.7
2MASS 0939-2448 A/B
650
[12]
T8
17.4± 0.4
2MASS 0415-0935
764
T8V
18.6± 0.2
54 Piscium B
810 ± 50
T7.5V
36.32± 0.02
[13]
2M 1237+6526
850
[14]
T6.5
46
2MASS J0348−6022
880
T7
[15]
27.2
SCR 1845-6357B
950
T6
13.050± 0.008
Epsilon Indi Bb
993
T6
12.05
2MASS 0243-2453
1,050
T6
35± 1
Cha 110913-773444
1,350
M9.5
529
Epsilon Indi Ba
1,353
T1-1.5
12.05
2MASS 0036+1821
1,650
L3.5
28.51± 0.05
2MASS 1507-1627
1,650
L5
24.12± 0.06
OTS 44
1,700
M9.5
554
GD 165 B
1,755
[16]
L4
[17]
109
S Cassiopeiae
1,800
S3,4–S5,8
3,100± 300
V384 Persei
1,820
[18]
N
DENIS-P J1058.7−1548
1,850
[19]
L3
49
T Draconis
1,850
[18]
C6,2e
V346 Puppis
1,875
[18]
C
2MASS J0523-1403
1,939
[20]
L2.5V
41.62
The coolest
main sequence star known as of 2023.
S Aurigae
1,940
[18]
C-N5+
V1426 Cygni
1,975
[18]
C7,2e
See also
References
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