List of smallest known stars

This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume).

List

Notable small stars

This is a list of small stars that are notable for characteristics that are not separately listed.

Star name	Star mean radius, kilometres	Star class	Notes	References
SGR 1935+2154	4.35	soft gamma repeater		[1]
RX J0720.4−3125	4.50+0.08 −0.09 – 5.38+0.13 −0.14	Neutron star	Neutron stars are stellar remnants produced when a star of around 8–9 solar masses or more explodes in a supernova at the end of its life. They are usually produced by stars of less than 20 solar masses, although a more massive star may produce a neutron star in certain cases.	[2]
4U 1820-30	9.1	Pulsar		[3]
Lich Pulsar (PSR B1257+12)	10	Pulsar	Orbited by three planets.	[4]
Crab Pulsar (PSR B0531+21)	10		Relatively young at 7200 (or 970 relative to Earth) years old as of May 2024.	[5]
Geminga	10			[6]
XTE J1739-285	10.9	Pulsar (quark star?)		[7]
PSR J1906+0746	11.99 – 12.85	Pulsar		[8]
PSR J2043+1711	12.13 – 12.96			[8]
PSR J1933–6211	12.15 – 12.98			[8]
Vela pulsar	12.52 – 13.30			[8]
PSR J0348+0432 A	13 ± 2		Orbited by a white dwarf star (see below)	[9]
PSR J1614−2230	13 ± 2			[10]
GX 13+1	≲14.50	Neutron star		[11]
PSR J1748-2446ad	<16	Pulsar	Fastest-spinning pulsar known.	[12]
RX J1856.5−3754	19	Neutron star	Closest neutron star discovered to date.	[13]
PSR B1620-26	24	Pulsar	An exoplanet orbits PSR B1620-26 and its white dwarf companion (see below) in a circumbinary orbit.
HD 49798	1,600	White dwarf	One of the smallest white dwarf stars known.	[14]
ZTF J1901+1458	1,809		Currently the most massive white dwarf known.	[15]
Janus	3,400		A white dwarf with a side of hydrogen and another side of helium.	[16]
Wolf 1130 B	3,480			[17]
IK Pegasi B	4,174		The nearest supernova candidate. (Type Ia)	[18]
Sirius B	5,466		Historically first detected white dwarf star	[19]
LB 1497	5,494.5			[20]
40 Eridani B	5,547.5
U Geminorum white dwarf	5,565			[21]
BPM 37093	5,750			[22][a]
Gliese 742 (GRW +70 8247)	5,950			[23][b]
Gliese 915 (WD 2359-434)	6,748.3			[24]
AE Aquarii A	6,950			[25]
AR Scorpii	6,950			[26]
G 29-38	6,950			[27]
LP 145-141	6,950		4th nearest white dwarf.[28]
WD B1620−26 (PSR B1620-26 B)	6,950		An exoplanet orbits WD B1620−26 and its pulsar companion (see above) in a circumbinary orbit.
Van Maanen's Star (Van Maanen 2)	6,950		3rd nearest white dwarf.	[29]
WD 0810–353	6,950			[30]
YZ Leonis Minoris A	6,950			[31]
QS Virginis A	7,658			[32]
Stein 2051 B	7,930			[33]
Ross 548 (ZZ Ceti)	8,209			[34]
CR Boötis A	8,350			[35]
DQ Herculis A	8,420		A slow, bright nova that reached peak brightness on 22 December 1934 with an apparent magnitude of 1.5.[36]	[37]
Procyon B	8,595		Second nearest white dwarf.	[38]
GD 165 A	8,626.5			[34]
ESO 439-26	8,775.5		Faintest known white dwarf.[39]
Gliese 293	8,900[c]			[24]
Wolf 489	9,044			[40]
HD 44120 C	9,044			[41]
WD 1856+534	9,113.67			[42]
Epsilon Reticuli B	9,185			[43]
KOI-256 B	9,350			[44]
RR Caeli white dwarf	10,908.5			[45]
WD 1145+017	13,926.84		Host star of one of the smallest exoplanets.	[46]
NN Serpentis white dwarf	14,679.5			[47]
Beta Crateris B	18,800			[48]
Feige 55	19,450			[49][d]
Central star of the Dumbbell Nebula	38,265			[50]
KPD 0005+5106	41,045			[51]
PSR J0348+0432 B	45,268		A white dwarf that orbits its pulsar companion (see above)	[9]
TMTS J052610.43+593445.1	45,916	B-type subdwarf	Smallest known non-degenerate star.	[52]
WISEA 1810−1010	46,840	Brown dwarf	Smallest known brown dwarf.	[53]
EPIC 201702477 [fr]	54,120			[54]
BE Ursae Majoris A	54,250	O-type subdwarf		[55]
LP 40-365	54,250	White dwarf	A white dwarf that might have formed in a type Iax supernova. Range of values of 40,350 to 82,095 km	[56]
Epsilon Indi Ba	55,656	Brown dwarf		[57]
LHS 6343 C	55,978			[58]
Epsilon Indi Bb	57,050			[57]
54 Piscium B	57,050			[59]
2MASS J1126−5003	57,193.5			[60]
UGPS J0521+3640	57,193.5
Wolf 1130 C	58,625			[61]
Gliese 570 D	59,350 to 66,090			[62]
EBLM J0555-57Ab	60,000	Red dwarf	This red dwarf has a size comparable to that of the planet Saturn. As of 2019, it is the second lightest hydrogen-fusing star known, marginally heavier (0.0777-0.0852M☉) than the 2MASS J0523-1403. Although its mass is comparable to that of TRAPPIST-1, its radius is 1/3 smaller.	[63][64][65]
Luhman 16 A	60,768	Brown dwarf	Luhman 16 A and Luhman 16 B are the closest brown dwarf stars to Earth, and the third-nearest star system to the Solar System.	[e]
SSSPM J0829-1309	61,300	Red dwarf	An L2 dwarf that is fusing hydrogen. Similarly to 2MASS J0523-1403, SSSPM J0829-1309 is one of the least luminous and massive hydrogen-fusing stars, and is smaller than Jupiter.	[66][67]
WISE 1405+5534	61,483	Brown dwarf		[68]
2MASS 0939-2448 B	62,600			[69]
WISE 0855−0714	63,500		Coolest known brown dwarf.	[70][f]
2MASS 0243−2453	64,000			[71]
W1906+40	64,350		In 2015 it was shown to have on its surface a storm the size of Jupiter's Great Red Spot.
2MASS J0348−6022	64,700			[72]
SDSS J1416+1348 A	65,772.5			[73]
WISEPC J205628.90+145953.3	66,487.5			[68]
WISE 1738+2732	66,487.5			[68]
SCR 1845−6357 A	66,790	Red dwarf
2MASS 0937+2931	67,200	Brown dwarf		[74]
WISE 0359−5401	67,200		In June 2023, it became the first Y-dwarf with a spectral energy distribution measured by the James Webb Space Telescope.	[75][76]
2MASS J22282889–4310262	67,200			[77]
SDSS J1416+1348 B	67,200			[78]
DENIS J081730.0−615520	67,200			[74]
WISE 2150–7520 B	67,900			[79]
Kelu-1 B	67,900
Kelu-1 A	68,180
LHS 1070 C	68,180		Certainly a brown dwarf based on its mass[80]	[81]
DENIS 0255−4700	69,570			[82]
R Aquarii B	69,570	White dwarf	Part of a symbiotic binary star system containing a red giant and a white dwarf.	[83]
HD 114762 B	69,570	Red dwarf		[84]
2MASS J0407+1546	69,570	Brown dwarf		[85]
HN Pegasi B	70,265			[86]
2MASS J0523-1403	70,600	Red dwarf	As in 2019, with mass 67.54±12.79MJ (0.0523-0.0767M☉) is the lowest known mass hydrogen-burning star.	[87][66][74]
GD 165 B	71,492	Brown dwarf		[88]
15 Sagittae B	71,492			[89]
DENIS-P J1058.7−1548	71,492			[90]
LHS 2924	71,657	Red dwarf		[91]
2MASS 0036+1821	72,200	Brown dwarf		[74]
CoRoT-3 b	72,200			[92]
LHS 1070 B	72,350		Likely a brown dwarf based on its mass[80]	[81]
UGPS 0722-05	72,850		Possibly a rogue planet	[93]
WISE 2150–7520 A	73,635			[79]
Luhman 16 B	74,350		Luhman 16 B and Luhman 16 A are the closest brown dwarf stars to Earth, and the third-nearest star system to the Solar System.	[e]
DENIS J1048−3956	75,135.5	Red dwarf		[94]
DX Cancri	76,527			[95]
LHS 292	76,527			[96]
TVLM 513-46546	76,527		Has one confirmed exoplanet
Gliese 229 B	79,000	Brown dwarf
HR 2562 B	79,350		Its mass is quite uncertain, at 29±15 MJ .[97] It is cited by the NASA Exoplanet Archive as the most massive exoplanet known.[98]	[99]
KELT-1 B	79,350			[100]
OGLE-TR-122B	81,100	Red dwarf	This was once the smallest known actively fusing star, when found in 2005, through 2013. It is the smallest eclipsing red dwarf, and smallest observationally measured diameter.	[101][102][103]
CoRoT-15b	82,200	Brown dwarf		[104]
VB 10	82,300	Red dwarf	It was the smallest known star from 1948 to 1981.	[105]
TRAPPIST-1	82,925		Hosts a planetary system with at least seven rocky planets.	[106]
LHS 2090	83,500			[107]
Teegarden's Star	83,500		Has two potentially habitable planets.	[108]
VB 8	84,450			[105]
SPECULOOS-3	85,570		Second-smallest star known to host a transiting exoplanet after TRAPPIST-1[109]	[109]
2MASS 0939-2448 A	87,220	Brown dwarf		[110]
Teide 1	88,130		The first brown dwarf to be verified, in 1995.	[111][g]
Gliese 412 B	90,400	Red dwarf		[112]
CFBDSIR 1458+10 B	90,450	Brown dwarf
CWISE J124909.08+362116.0	93,200[h]	Red dwarf	A high-velocity star travelling the Milky Way at 456 km/s.	[113]
Gliese 1002	95,310		Has two confirmed exoplanets	[114]
LHS 1070 A	97,400			[81]
LHS 3154	97,400		Has one confirmed exoplanet	[115]
Wolf 424 B	97,400			[116]
Wolf 359	100,180.8		Fifth-nearest star system to the Solar System. Has one unconfirmed exoplanet	[105]
NN Serpentis red dwarf	103,660			[117]
CFBDSIR 1458+10 A	104,350	Brown dwarf
NY Virginis A	105,050	B-type subdwarf		[118]
Gliese 1061	105,746.4	Red dwarf	Has three confirmed exoplanets, two of them are in the habitable zone.	[105]
LP 890-9	106,580		Has two confirmed exoplanets, one of them (LP 890-9c) is in the habitable zone.	[119]
Proxima Centauri (Alpha Centauri C)	107,277		Nearest star and nearest stellar system to the Sun. Has one confirmed potentially habitable exoplanet, one unconfirmed exoplanet and one disputed exoplanet	[120]
Luyten 726-8 B (UV Ceti)	110,615		The archetypal type of the flare stars, and the eight-nearest star system to the Solar System.	[121]
GL Virginis	111,300			[122]
NY Virginis B	111,300			[123]
TZ Arietis	112,000		Has one confirmed exoplanet	[124]
HD 984 B	112,700	Brown dwarf		[125][i]
Luyten 726-8 A (BL Ceti)	114,790	Red dwarf	Luyten 726-8 A and B are the eight-nearest star system to the Solar System.	[121]
YZ Ceti	116,877.5		Has three confirmed exoplanets	[126]
LP 791-18 (TOI-736)	118,270		Has three confirmed exoplanets	[127]
HR 858 B	118,270			[128]
UY Sextantis	118,270	B-type subdwarf		[129]
Wolf 424 A	118,270	Red dwarf		[116]
Z Andromedae B	118,270 – 250,450	White dwarf		[130]
Kepler-42	121,750	Red dwarf	Has three confirmed exoplanets	[131]
EZ Aquarii A (Luyten 789-6 A)	121,750			[116]
HW Virginis B	121,835			[132]
Gliese 1151	123,900		Has one confirmed exoplanet	[133]
AB Doradus C	124,100		Very low-mass star (0.09 M☉)	[134][j]
GQ And (Groombridge 34 B)	125,200			[135]
Wolf 1069	126,130		Has one confirmed potentially habitable exoplanet	[136]
HW Virginis A	127,404.6	B-type subdwarf		[132]
Gliese 3323	129,539.5	Red dwarf	Has two confirmed exoplanets	[137]
Barnard's Star	130,100		The star with the highest proper motion,[138] and the second-nearest star system to the Solar system. Has a planet, Barnard's Star b / Barnard b.[139]	[105]
Batsũ̀ (LHS 3844)	131,500		Has one confirmed exoplanet	[140]
Ross 248	132,200		Tenth-nearest star system to the Solar System.	[112]
Gliese 1128	132,200			[141]
Alpha Mensae B	132,200			[142]
WD 2134−125, central star of NGC 7094 [fr]	134,000	White dwarf		[143][k]
Ross 128	136,844	Red dwarf	Has one confirmed potentially habitable exoplanet	[144]
LTT 1445 C	137,050			[145]
Ross 154	139,140		Ninth-nearest star system to our Solar System.	[105]
Gliese 1062	141,000		Other sources cites 258,800 km (0.372 R☉)[146] and 285,935 km (0.411 R☉)[147]	[148]
Kepler-70	141,225	B-type subdwarf	Has two unconfirmed exoplanets, which may be the hottest exoplanets known.	[149]
RR Caeli red dwarf	141,225	Red dwarf
Gliese 1214	141,922		Has a confirmed exoplanet	[105]
Gliese 754	142,618.5			[150]
LHS 1140	142,618.5		Has two confirmed exoplanets	[105]
EZ Aquarii B (Luyten 789-6 B)	146,100			[151]
Gliese 1132	149,575		Has two confirmed exoplanets	[105]
LSR J1835+3259	150,133	Brown dwarf		[152]
CT Chamaeleontis B (CT Cha B)	157,300		Either planet or brown dwarf	[153]
Fomalhaut C	160,000	Red dwarf		[154][l]
V391 Pegasi	160,000	B-type subdwarf	Has one exoplanet candidate	[155]
Kepler-1649	161,400	Red dwarf	Has two confirmed exoplanets	[156]
LTT 1445 B	164,185			[145]
CM Draconis B (CM Dra B)	166,700			[157]
Kepler-429	167,000	B-type subdwarf	Has three exoplanet candidates	[158]
Kruger 60 B	167,000	Red dwarf		[159]
Ross 695	167,000			[160]
TOI-715	167,000		Has one confirmed, potentially habitable exoplanet	[161]
2M1207 A	173,925	Brown dwarf	Has one confirmed exoplanet	[162]
CM Draconis A (CM Dra A)	176,000	Red dwarf		[163]
DG Canum Venaticorum	176,000			[164]
Gliese 625	177,400			[165]
Gliese 12	182,065		Has one known exoplanet	[166]
AM Herculis red dwarf	180,882			[167]
55 Cancri B	186,447.5			[168]
LTT 1445 A	188,500		Has three confirmed exoplanets, one of them is in the habitable zone	[169]
Struve 2398 B	189,925			[112]
Gliese 105 B (268 G. Ceti B)	193,405			[112]
LHS 475	194,030.5		Has one confirmed exoplanet	[170]
HR 7703 B	194,800			[159]
Gliese 445	198,275			[171]
Mu Cassiopeiae Ab	201,750			[172]
Kapteyn's Star	202,448.7		This is the closest halo star to the Sun.	[173]
Stein 2051 A	203,150			[174]
HN Librae	208,000		Has one confirmed planet and one unconfirmed	[175]
Gliese 402	208,700
L 98-59	210,800		Has four confirmed exoplanets and one unconfirmed	[176]
Gliese 581	215,650		Has three confirmed exoplanets	[105]
40 Eridani C	215,650			[177]
Wolf 1061	221,900		Has three confirmed exoplanets	[105]
Gliese 3929	222,600		Has two confirmed exoplanets	[178]
Xi Ursae Majoris Ab	222,600			[179]
Kepler-296 B	224,000			[180]
YZ Canis Minoris	225,400			[124]
LHS 1678	228,285		Has three known exoplanets	[181]
Wolf 437 (Gar)	228,190		Has one confirmed exoplanet	[182]
Gliese 1	229,580			[183]
Wolf 1130 A	229,580			[184]
Gliese 357	231,650		Has three confirmed exoplanets	[185]
Gliese 667 C	231,650		Has two confirmed exoplanets	[105]
Kepler-47 B	235,150		There are three exoplanets orbiting Kepler-47 B and its companion, Kepler-47 A, in a circumbinary orbit.	[186][187]
Luyten's Star (Gliese 273)	243,500		Has two confirmed exoplanets and other two unconfirmed	[188]
Kruger 60 A	243,500			[159]
Struve 2398 A	246,300			[105]
EV Lacertae	250,500		On 25 April 2008, a record-setting stellar flare was observed on its surface by NASA's Swift, that was thousands of times more powerful than any solar flare.[189]	[190]
Theta Cygni B	250,500			[191]
Gliese 251	253,235		Has one confirmed exoplanet	[192]
DT Virginis B (Ross 458)	256,000			[193]
AT Microscopii B (AT Mic B)	257,400			[194]
Regulus C	257,400			[195]
Gliese 876 (Ross 780)	258,800		Has four confirmed exoplanets	[105]
LHS 6343 A (KOI-959 A)	259,495			[58]
LTT 3780 (TOI-732)	260,190		Has two confirmed exoplanets	[196]
TOI-270	263,000		Has three confirmed exoplanets	[197]
Gliese 412 A	264,400			[112]
KIC 4150611 Ab2	264,400			[198]
GX And (Groombridge 34 A)	267,800		Has two confirmed exoplanets	[105]
L 34-26	270,000		It hosts the exoplanet with the longest known orbital period, COCONUTS-2b, which takes about 1.1 million years to complete an orbit around its star.[199]	[200]
Gliese 908 (BR Piscium)	271,323			[160]
Gliese 1252	272,000		Has one confirmed exoplanet, an ultra-short-period planet with a daytime temperature measured at 1140 °C.[201]	[202]
Sharjah (HIP 79431)	272,000		Has one confirmed exoplanet. Other sources cites radius of 307,500 km (0.442 R☉)[203] and 375,680 km (0.54 R☉)[204]	[205]
Lalande 21185	273,500		Sixth-nearest star system to the Solar System. Has two confirmed exoplanets and one unconfirmed	[206]
LHS 6343 B	274,100			[58]
Gliese 22 B	274,100			[207]
Gliese 179	278,300		Has two confirmed exoplanets	[137]
HIP 57050	278,300		Has two confirmed exoplanets	[208]
KOI-4777	278,300		Has one confirmed exoplanet	[209]
Gliese 163	284,550		Has five confirmed exoplanets	[105]
AT Microscopii A (AT Mic A)	285,250			[194]
Gliese 588	292,200			[210]
Gliese 686	292,200		Has a confirmed exoplanet	[211]
KIC 4150611 Ab1	292,200			[198]
TOI 700	292,200		Has four confirmed exoplanets	[212]
QS Virginis B	292,404		[32]
Gliese 180	294,211.5	Has two confirmed exoplanets	[137]
AD Leonis (Gliese 388)	294,500		[213]
Gliese 408	299,150		[159]
Gliese 3634	299,150	Has a confirmed exoplanet	[214]
Gliese 569 A	299,150		[215]
U Geminorum red dwarf	299,150		[21]
Gliese 436	300,542	Has a confirmed exoplanet	[105]
Sigma Coronae Borealis C	304,000		[216]
HD 260655 (TOI-4599)	305,400	Has two confirmed exoplanets	[217]
WR 93b	306,108	Wolf-Rayet		[218]
Gliese 832	307,500	Red dwarf	Has two exoplanets	[105]
Gliese 877	307,500			[185]
Gliese 393	310,212.5			[137]
Tabby's Star B (KIC 8462852 B)	313,065			[219]
Añañuca (Gliese 367)	317,935		Has three confirmed exoplanets	[220]
Gliese 849	322,800		Has two confirmed exoplanets	[105]
K2-18 (EPIC 201912552)	326,300		Has two confirmed exoplanets	[221]
Gliese 521	327,000			[222]
BAT99-123 (Brey 93)	327,000	Wolf-Rayet	First WO star discovered in the Large Magellanic Cloud.	[223]
Lacaille 9352 (Gliese 887)	329,750	Red dwarf	Has two confirmed exoplanets and one unconfirmed	[105]

Smallest stars by type

List of the smallest stars by star type

Type	Star name	Radius Solar radii (Sun = 1)	Radius Jupiter radii (Jupiter = 1)	Radius Earth radii (Earth = 1)	Radius (km / mi)	Date	Notes	References
Red dwarf	EBLM J0555-57Ab	0.084	0.84	9.41	60,000 km (37,000 mi)	2017	The red dwarf stars are considered the smallest stars known, and representative of the smallest star possible.	[63][64][65]
Brown dwarf	WISEA 1810−1010	0.067	0.655	7.29	46,840 km (29,110 mi)		Brown dwarfs are not massive enough to build up the pressure in the central regions to allow nuclear fusion of hydrogen into helium. They are best described as extremely massive gas giants that were not able to ignite into a hydrogen-fusing star.	[53]
White dwarf	HD 49798	0.0023	0.023	0.25	1,600 km (990 mi)	2021	White dwarfs are stellar remnants produced when a star with around 8 solar masses or less sheds its outer layers into a planetary nebula. The leftover core becomes the white dwarf. It is thought that white dwarfs cool down over quadrillions of years to produce a black dwarf.	[14]
Neutron star	RX J0720.4−3125	0.0000064683 – 0.0000077332	0.00006294 – 0.00007525	0.0007055 – 0.0008435	4.50+0.08 −0.09 – 5.38+0.13 −0.14	2012	Neutron stars are stellar remnants produced when stars with around 9 solar masses or more explode in supernovae at the ends of their lives. They are usually produced by stars with less than 20 solar masses, although a more massive star may produce a neutron star in certain cases.	[2]

Timeline of smallest red dwarf star recordholders

Red dwarfs are considered the smallest star known that are active fusion stars, and are the smallest stars possible that is not a brown dwarf.

List of smallest red dwarf titleholders

Star name	Date	Radius Solar radii (Sun = 1)	Radius Jupiter radii (Jupiter = 1)	Radius km (mi)	Notes
EBLM J0555-57Ab	2017-	0.084	0.84	60,000 km (37,000 mi)	This star has a size comparable to that of Saturn.	[63][64][65]
2MASS J0523-1403	2013-2017	0.102	1.01	70,600 km (43,900 mi)	Lowest mass main sequence star as of 2020.	[87][66][224][74]
OGLE-TR-122B	2005-2013	0.117	1.16	81,100 km (50,400 mi)		[101][102][103]

Notes

1. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{10,780}}{\biggr )}^{4}\cdot 10^{-3.08}}}=0.008268\ R_{\odot }}$.

2. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{11,880}}{\biggr )}^{4}\cdot 10^{-2.88}}}=0.00857\ R_{\odot }}$.

3. From surface gravity and mass
4. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{58,280}}{\biggr )}^{4}\cdot 10^{0.91}}}=0.02796\ R_{\odot }}$.

5. From : ${\displaystyle R={\sqrt {\frac {L}{4\pi \sigma {T_{e}}^{4}}}}}$, where ${\displaystyle L}$ is the luminosity, ${\displaystyle R}$ is the radius, ${\displaystyle T_{e}}$ is the effective surface temperature and ${\displaystyle \sigma }$ is the Stefan–Boltzmann constant.
6. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{285}}{\biggr )}^{4}\cdot 10^{-7.305}}}=0.091298\ R_{\odot }}$.

7. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{2,600}}{\biggr )}^{4}\cdot 10^{-3.18}}}=0.12668\ R_{\odot }}$.

8. Calculated using the mass and a surface gravity of 5.1 using the following equation:
   log(R/R_☉) = 2.22 + 0.5 • log(M/M_☉) - 0.5 • log g
9. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

   ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{2,730}}{\biggr )}^{4}\cdot 10^{-2.88}}}=0.162\ R_{\odot }}$.

10. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

    ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{2,925}}{\biggr )}^{4}\cdot 0.0021}}=0.1784\ R_{\odot }}$.

11. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

    ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{115,000}}{\biggr )}^{4}\cdot 10^{3.77}}}=0.1933\ R_{\odot }}$.

12. Applying the Stefan–Boltzmann law with a nominal solar effective temperature of 5,772 K:

    ${\displaystyle {\sqrt {{\biggl (}{\frac {5,772}{3,132}}{\biggr )}^{4}\cdot 0.004603}}=0.23\ R_{\odot }}$.