HABITATION ZONE OF STARS

Main Sequence Stars

Spectral	Temperature	Habitation	Average	Roche 	Stellar
Class	Range (in Kelvin)	Zone (In AUs)	Distance (in AUs)	Limit (AUs)	Lifetime (Million Yrs)
O0	57,001 - 60,000	94.048 - 201.531	136.018	0.14512	2.24683
O1	54,001 - 57,000	90.776 - 194.521	129.680	0.12827	2.38742
O2	51,001 - 54,000	87.382 - 187.248	124.832	0.11282	2.54858
O3	48,001 - 51,000	83.854 - 179.681	119.787	0.09878	2.73533
O4	44,501 - 48,000	80.165 - 171.781	114.521	0.08146	2.95450
O5	41,001 - 44,500	76.300 - 163.500	109.000	0.07022	3.21565
O6	38,001 - 41,000	72.229 - 154.776	103.184	0.06039	3.53257
O7	35,801 - 38,000	64.730 - 138.707	92.472	0.05524	4.26285
O8	33,001 - 35,800	54.913 - 117.671	78.447	0.05056	5.65133
O9	30,001 - 33,000	46.586 - 99.826	66.551	0.04475	7.49195

B0	25,401 - 30,000	35.418 - 75.895	50.596	0.03965	11.9854
B1	22,001 - 25,400	28.443 - 60.949	40.632	0.03071	17.4555
B2	18,701 - 22,000	25.490 - 54.621	36.414	0.02444	21.0637
B3	17,001 - 18,700	22.844 - 48.952	32.634	0.01952	25.4173
B4	15,401 - 17,000	18.347 - 39.316	26.211	0.01924	37.0103
B5	14,001 - 15,400	13.208 - 28.657	18.868	0.01901	65.0194
B6	13,001 - 14,000	8.992 - 19.268	12.845	0.01784	125.690
B7	11,901 - 13,000	6.837 - 14.651	9.767	0.01657	201.022
B8	10,501 - 11,900	6.126 - 13.128	8.752	0.01484	242.631
B9	9,521 - 10,500	4.945 - 10.596	7.064	0.01386	350.336

A0	9,231 - 9,520	4.499 - 9.640	6.427	0.01269	412.003
A1	8,971 - 9,230	4.177 - 8.950	5.967	0.01086	467.935
A2	8,721 - 8,970	3.177 - 6.808	4.539	0.009925	747.873
A3	8,461 - 8,720	2.843 - 6.093	4.062	0.009410	904.570
A4	8,201 - 8,460	2.693 - 5.771	3.847	0.009035	992.930
A5	8,001 - 8,200	2.415 - 5.174	3.450	0.008707	1,197.02
A6	7,851 - 8,000	2.279 - 4.884	3.256	0.008473	1,321.80
A7	7,581 - 7,850	2.017 - 4.321	2.881	0.008239	1,630.01
A8	7,391 - 7,580	1.736 - 3.720	2.480	0.008005	2,107.76
A9	7,201 - 7,390	1.556 - 3.334	2.223	0.007818	2,543.18

F0	7,041 - 7,200	1.473 - 3.157	2.105	0.007678	2,792.16
F1	6,891 - 7,040	1.321 - 2.830	1.887	0.007256	3,367.66
F2	6,741 - 6,890	1.250 - 2.679	1.786	0.006835	3,699.81
F3	6,591 - 6,740	1.184 - 2.537	1.691	0.006788	4,062.83
F4	6,441 - 6,590	1.059 - 2.270	1.513	0.006765	4,915.52
F5	6,381 - 6,440	1.005 - 2.153	1.435	0.006741	5,382.34
F6	6,271 - 6,380	0.921 - 1.973	1.315	0.006460	6,251.16
F7	6,201 - 6,270	0.883 - 1.891	1.261	0.006179	6,720.07
F8	6,121 - 6,200	0.852 - 1.825	1.217	0.005899	7,145.97
F9	6,031 - 6,120	0.807 - 1.730	1.153	0.005571	7,540.77

G0	5,941 - 6,030	0.786 - 1.684	1.122	0.005290	8,202.91
G1	5,861 - 5,940	0.744 - 1.595	1.063	0.004962	9,005.42
G2	5,831 - 5,860	0.700 - 1.500	1.000	0.004681	10,000.00
G3	5,801 - 5,830	0.658 - 1.409	0.939	0.004574	11,330.62
G4	5,771 - 5,800	0.613 - 1.313	0.875	0.004377	12,563.23
G5	5,701 - 5,770	0.580 - 1.243	0.829	0.004181	13,801.28
G6	5,631 - 5,700	0.537 - 1.152	0.768	0.004152	15,733.18
G7	5,571 - 5,630	0.492 - 1.054	0.703	0.004124	18.296.54
G8	5,401 - 5,570	0.441 - 0.945	0.630	0.004096	22,079.90
G9	5,251 - 5,400	0.417 - 0.895	0.596	0.003886	24,255.86

K0	5,081 - 5,250	0.394 - 0.843	0.562	0.003678	26,834.07
K1	4,901 - 5,080	0.354 - 0.759	0.506	0.003595	32,156.33
K2	4,731 - 4,900	0.335 - 0.718	0.479	0.003511	35,324.74
K3	4,591 - 4,730	0.300 - 0.644	0.429	0.003389	42,629.61
K4	4,351 - 4,590	0.269 - 0.577	0.385	0.003240	51,446.42
K5	4,201 - 4,350	0.255 - 0.546	0.364	0.003202	56,514.74
K6	4,061 - 4,200	0.228 - 0.489	0.326	0.003101	68,203.27
K7	3,991 - 4,060	0.183 - 0.393	0.262	0.003001	99,324.60
K8	3,921 - 3,990	0.164 - 0.352	0.235	0.002977	119,860.28
K9	3,851 - 3,920	0.125 - 0.268	0.179	0.002954	191,785.33

M0	3,721 - 3,850	0.1004 - 0.2151	0.143	0.002931	279,241.65
M1	3,581 - 3,720	0.0763 - 0.1635	0.109	0.002795	446,845.45
M2	3,471 - 3,580	0.0520 - 0.1113	0.0742	0.002589	863,288.14
M3	3,371 - 3,470	0.0418 - 0.0895	0.0597	0.002467	1,255,328
M4	3,241 - 3,370	0.0269 - 0.0577	0.0385	0.001901	2,663,729
M5	3,051 - 3,240	0.0184 - 0.0394	0.0263	0.001564	5,123,396
M6	2,941 - 3,050	0.00939 - 0.0201	0.0134	0.001227	16,209,381
M7	2,641 - 2,940	0.00542 - 0.0116	0.00775	0.001058	41,564,973
M8	2,511 - 2,640	0.00313 - 0.00671	0.00447	0.0007771	106,583,156
M9	2,401 - 2,510	0.00221 - 0.00474	0.00316	0.0004307	193,069,773