Diffuse interstellar band λ6614 as a distance tracer for the Perseus, Taurus, and Orion molecular clouds: Feasibility and limitations

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Volume 702 (October 2025)

A&A, 702 (2025) A58

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Table C.1

Distances and sizes along sightlines in the Perseus, Taurus, Orion A, and Orion B molecular clouds^c.

Cloud	ℓ	b	stars	d₆₆₁₄	d_E(BP–RP)	S₆₆₁₄	S_E(BP–RP)	d_Z21	d_C23
	°	°		pc	pc	pc	pc	pc	pc
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
Perseus(IC 348)^a	160.81	−17.94	28	${297.73}_{- 1.22}^{+ 11.22}$ $297.73_{ - 1.22}^{ + 11.22}$	${297.10}_{- 0.89}^{+ 1.06}$ $297.10_{ - 0.89}^{ + 1.06}$	${0.67}_{- 0.46}^{+ 9.61}$ $0.67_{ - 0.46}^{ + 9.61}$	${0.26}_{- 0.18}^{+ 0.26}$ $0.26_{ - 0.18}^{ + 0.26}$	299.00	304
Perseus	159.99	−19.07	43	${294.06}_{- 2.03}^{+ 1.90}$ $294.06_{ - 2.03}^{ + 1.90}$	${296.72}_{- 0.68}^{+ 0.61}$ $296.72_{ - 0.68}^{ + 0.61}$	${1.08}_{- 0.77}^{+ 1.35}$ $1.08_{ - 0.77}^{ + 1.35}$	${2.09}_{- 0.94}^{+ 0.77}$ $2.09_{ - 0.94}^{ + 0.77}$	299.69	285~306
Perseus	157.80	−19.93	42	${300.92}_{- 3.87}^{+ 3.57}$ $300.92_{ - 3.87}^{ + 3.57}$	${297.84}_{- 2.27}^{+ 2.27}$ $297.84_{ - 2.27}^{ + 2.27}$	${4.42}_{- 2.80}^{+ 4.51}$ $4.42_{ - 2.80}^{ + 4.51}$	${12.59}_{- 2.50}^{+ 2.06}$ $12.59_{ - 2.50}^{ + 2.06}$		285~306
Perseus	159.91	−20.56	29	${294.62}_{- 1.73}^{+ 2.07}$ $294.62_{ - 1.73}^{ + 2.07}$	${299.71}_{- 0.78}^{+ 0.79}$ $299.71_{ - 0.78}^{ + 0.79}$	${6.16}_{- 2.80}^{+ 3.52}$ $6.16_{ - 2.80}^{ + 3.52}$	${8.38}_{- 1.04}^{+ 1.20}$ $8.38_{ - 1.04}^{ + 1.20}$		285~306
Perseus(NGC 1333)^a	158.50	−20.56	36	${288.96}_{- 3.05}^{+ 14.12}$ $288.96_{ - 3.05}^{ + 14.12}$	${286.54}_{- 0.14}^{+ 0.08}$ $286.54_{ - 0.14}^{ + 0.08}$	${8.26}_{- 6.67}^{+ 14.77}$ $8.26_{ - 6.67}^{ + 14.77}$	${0.51}_{- 0.24}^{+ 0.22}$ $0.51_{ - 0.24}^{ + 0.22}$	294.27	287
Perseus	159.41	−21.75	46	${288.90}_{- 7.31}^{+ 10.99}$ $288.90_{ - 7.31}^{ + 10.99}$	${280.92}_{- 0.20}^{+ 0.35}$ $280.92_{ - 0.20}^{ + 0.35}$	${24.02}_{- 9.09}^{+ 4.44}$ $24.02_{ - 9.09}^{ + 4.44}$	${0.26}_{- 0.17}^{+ 0.14}$ $0.26_{ - 0.17}^{ + 0.14}$	290.33	285~306
Perseus	158.36	−22.10	79	${291.41}_{- 4.33}^{+ 3.44}$ $291.41_{ - 4.33}^{ + 3.44}$	${284.36}_{- 0.10}^{+ 0.12}$ $284.36_{ - 0.10}^{ + 0.12}$	${17.75}_{- 5.25}^{+ 6.90}$ $17.75_{ - 5.25}^{ + 6.90}$	${1.74}_{- 0.13}^{+ 0.14}$ $1.74_{ - 0.13}^{ + 0.14}$	288.00	285~306
Perseus	157.10	−23.13	59	${289.49}_{- 5.69}^{+ 5.53}$ $289.49_{ - 5.69}^{ + 5.53}$	${284.99}_{- 0.48}^{+ 0.48}$ $284.99_{ - 0.48}^{ + 0.48}$	${26.39}_{- 4.06}^{+ 2.64}$ $26.39_{ - 4.06}^{ + 2.64}$	${8.60}_{- 0.33}^{+ 0.31}$ $8.60_{ - 0.33}^{ + 0.31}$	286.50	285~306
Perseus	157.80	−23.78	60	${282.56}_{- 5.54}^{+ 5.87}$ $282.56_{ - 5.54}^{ + 5.87}$	${273.95}_{- 1.20}^{+ 0.86}$ $273.95_{ - 1.20}^{ + 0.86}$	${17.58}_{- 5.49}^{+ 6.64}$ $17.58_{ - 5.49}^{ + 6.64}$	${15.56}_{- 1.88}^{+ 1.25}$ $15.56_{ - 1.88}^{ + 1.25}$	285.40	285~306
Taurus	181.91	−6.92	18	${194.52}_{- 1.55}^{+ 1.75}$ $194.52_{ - 1.55}^{ + 1.75}$	${197.10}_{- 1.09}^{+ 1.06}$ $197.10_{ - 1.09}^{ + 1.06}$	${3.17}_{- 1.86}^{+ 3.58}$ $3.17_{ - 1.86}^{ + 3.58}$	${6.53}_{- 2.25}^{+ 1.94}$ $6.53_{ - 2.25}^{ + 1.94}$
Taurus(D1 – L1544)^a	181.21	−7.52	32	${177.01}_{- 5.10}^{+ 4.35}$ $177.01_{ - 5.10}^{ + 4.35}$	${174.68}_{- 1.32}^{+ 1.90}$ $174.68_{ - 1.32}^{ + 1.90}$	${18.17}_{- 6.53}^{+ 1.46}$ $18.17_{ - 6.53}^{ + 1.46}$	${9.46}_{- 1.82}^{+ 1.16}$ $9.46_{ - 1.82}^{ + 1.16}$	172^b
Taurus	177.89	−9.12	63	${176.42}_{- 2.89}^{+ 3.19}$ $176.42_{ - 2.89}^{ + 3.19}$	${175.13}_{- 1.88}^{+ 1.98}$ $175.13_{ - 1.88}^{ + 1.98}$	${14.13}_{- 4.83}^{+ 3.76}$ $14.13_{ - 4.83}^{ + 3.76}$	${17.27}_{- 2.19}^{+ 1.73}$ $17.27_{ - 2.19}^{ + 1.73}$	166.50
Taurus	176.48	−10.34	83	${171.76}_{- 2.49}^{+ 2.88}$ $171.76_{ - 2.49}^{ + 2.88}$	${172.60}_{- 2.11}^{+ 1.98}$ $172.60_{ - 2.11}^{ + 1.98}$	${20.25}_{- 3.46}^{+ 4.74}$ $20.25_{ - 3.46}^{ + 4.74}$	${19.19}_{- 2.33}^{+ 2.55}$ $19.19_{ - 2.33}^{ + 2.55}$	162.40
Taurus	175.08	−11.55	38	${174.72}_{- 3.39}^{+ 3.89}$ $174.72_{ - 3.39}^{ + 3.89}$	${160.19}_{- 7.18}^{+ 4.99}$ $160.19_{ - 7.18}^{ + 4.99}$	${32.32}_{- 17.42}^{+ 12.67}$ $32.32_{ - 17.42}^{ + 12.67}$	${27.30}_{- 8.00}^{+ 7.84}$ $27.30_{ - 8.00}^{ + 7.84}$	158.20
Taurus	170.10	−12.73	49	${172.51}_{- 4.73}^{+ 5.04}$ $172.51_{ - 4.73}^{ + 5.04}$	${170.45}_{- 3.54}^{+ 1.87}$ $170.45_{ - 3.54}^{ + 1.87}$	${13.17}_{- 6.50}^{+ 4.79}$ $13.17_{ - 6.50}^{ + 4.79}$	${3.77}_{- 1.78}^{+ 1.03}$ $3.77_{ - 1.78}^{ + 1.03}$
Taurus	175.38	−13.07	56	${157.82}_{- 5.53}^{+ 6.72}$ $157.82_{ - 5.53}^{ + 6.72}$	${157.90}_{- 4.38}^{+ 5.83}$ $157.90_{ - 4.38}^{ + 5.83}$	${10.17}_{- 6.15}^{+ 6.43}$ $10.17_{ - 6.15}^{ + 6.43}$	${2.22}_{- 1.60}^{+ 2.32}$ $2.22_{ - 1.60}^{ + 2.32}$	153.71	129~157
Taurus	172.27	−13.13	33	${171.54}_{- 3.53}^{+ 3.53}$ $171.54_{ - 3.53}^{ + 3.53}$	${162.90}_{- 3.00}^{+ 3.23}$ $162.90_{ - 3.00}^{ + 3.23}$	${27.23}_{- 3.73}^{+ 2.08}$ $27.23_{ - 3.73}^{ + 2.08}$	${29.20}_{- 1.42}^{+ 0.57}$ $29.20_{ - 1.42}^{ + 0.57}$
Taurus	171.86	−13.69	63	${163.59}_{- 3.84}^{+ 3.48}$ $163.59_{ - 3.84}^{ + 3.48}$	${142.77}_{- 3.98}^{+ 1.98}$ $142.77_{ - 3.98}^{ + 1.98}$	${19.30}_{- 1.00}^{+ 0.50}$ $19.30_{ - 1.00}^{ + 0.50}$	${22.47}_{- 21.85}^{+ 3.57}$ $22.47_{ - 21.85}^{ + 3.57}$
Taurus	176.08	−13.69	51	${154.59}_{- 4.28}^{+ 2.44}$ $154.59_{ - 4.28}^{ + 2.44}$	${157.63}_{- 1.34}^{+ 1.81}$ $157.63_{ - 1.34}^{ + 1.81}$	${11.99}_{- 5.43}^{+ 5.58}$ $11.99_{ - 5.43}^{ + 5.58}$	${0.59}_{- 0.40}^{+ 0.59}$ $0.59_{ - 0.40}^{ + 0.59}$	148.67
Taurus(C7 – L1527)^a	174.53	−13.93	58	${146.73}_{- 4.26}^{+ 5.36}$ $146.73_{ - 4.26}^{ + 5.36}$	${143.24}_{- 1.06}^{+ 1.12}$ $143.24_{ - 1.06}^{ + 1.12}$	${15.83}_{- 5.74}^{+ 3.03}$ $15.83_{ - 5.74}^{ + 3.03}$	${19.76}_{- 0.37}^{+ 0.18}$ $19.76_{ - 0.37}^{ + 0.18}$	148.75	129~157
Taurus	172.57	−14.30	38	${155.97}_{- 6.65}^{+ 6.13}$ $155.97_{ - 6.65}^{ + 6.13}$	${140.61}_{- 0.76}^{+ 0.63}$ $140.61_{ - 0.76}^{ + 0.63}$	${10.43}_{- 6.42}^{+ 6.29}$ $10.43_{ - 6.42}^{ + 6.29}$	${2.13}_{- 0.93}^{+ 0.96}$ $2.13_{ - 0.93}^{ + 0.96}$	140.50	129~157
Taurus	171.36	−14.83	30	${160.48}_{- 17.74}^{+ 6.62}$ $160.48_{ - 17.74}^{ + 6.62}$	${135.17}_{- 1.50}^{+ 1.48}$ $135.17_{ - 1.50}^{ + 1.48}$	${17.02}_{- 4.94}^{+ 2.20}$ $17.02_{ - 4.94}^{ + 2.20}$	${29.78}_{- 1.75}^{+ 1.84}$ $29.78_{ - 1.75}^{ + 1.84}$	142.17
Taurus	167.14	−14.83	51	${138.21}_{- 14.40}^{+ 15.93}$ $138.21_{ - 14.40}^{ + 15.93}$	${133.32}_{- 7.66}^{+ 7.27}$ $133.32_{ - 7.66}^{ + 7.27}$	${28.39}_{- 14.07}^{+ 12.08}$ $28.39_{ - 14.07}^{ + 12.08}$	${11.84}_{- 5.25}^{+ 6.15}$ $11.84_{ - 5.25}^{ + 6.15}$
Taurus	173.27	−14.92	53	${148.55}_{- 4.38}^{+ 5.19}$ $148.55_{ - 4.38}^{ + 5.19}$	${139.05}_{- 0.65}^{+ 0.71}$ $139.05_{ - 0.65}^{ + 0.71}$	${16.15}_{- 3.64}^{+ 2.61}$ $16.15_{ - 3.64}^{ + 2.61}$	${11.20}_{- 1.05}^{+ 1.03}$ $11.20_{ - 1.05}^{ + 1.03}$	140.67
Taurus(C8 – B213)^a	169.77	−15.49	54	${154.67}_{- 6.28}^{+ 7.96}$ $154.67_{ - 6.28}^{ + 7.96}$	${143.32}_{- 0.15}^{+ 0.26}$ $143.32_{ - 0.15}^{ + 0.26}$	${14.84}_{- 6.43}^{+ 3.72}$ $14.84_{ - 6.43}^{ + 3.72}$	${1.84}_{- 0.79}^{+ 0.71}$ $1.84_{ - 0.79}^{ + 0.71}$	155.00
Taurus	165.54	−15.54	43	${145.62}_{- 5.19}^{+ 12.06}$ $145.62_{ - 5.19}^{ + 12.06}$	${151.64}_{- 6.20}^{+ 10.27}$ $151.64_{ - 6.20}^{ + 10.27}$	${5.48}_{- 3.43}^{+ 6.02}$ $5.48_{ - 3.43}^{ + 6.02}$	${5.23}_{- 3.44}^{+ 3.93}$ $5.23_{ - 3.44}^{ + 3.93}$
Taurus(C6 – L1524)^a	173.97	−15.54	68	${153.83}_{- 5.82}^{+ 4.99}$ $153.83_{ - 5.82}^{ + 4.99}$	${150.07}_{- 1.18}^{+ 1.20}$ $150.07_{ - 1.18}^{ + 1.20}$	${15.19}_{- 3.70}^{+ 3.04}$ $15.19_{ - 3.70}^{ + 3.04}$	${18.38}_{- 1.45}^{+ 1.05}$ $18.38_{ - 1.45}^{ + 1.05}$	128^b	132~156
Taurus	174.68	−16.16	63	${167.40}_{- 4.78}^{+ 4.20}$ $167.40_{ - 4.78}^{ + 4.20}$	${144.45}_{- 8.43}^{+ 8.74}$ $144.45_{ - 8.43}^{ + 8.74}$	${13.06}_{- 4.71}^{+ 4.37}$ $13.06_{ - 4.71}^{ + 4.37}$	${2.03}_{- 1.41}^{+ 2.26}$ $2.03_{ - 1.41}^{ + 2.26}$	154.00	132~156
Taurus	166.24	−16.16	44	${139.77}_{- 9.18}^{+ 7.26}$ $139.77_{ - 9.18}^{ + 7.26}$	${138.45}_{- 5.49}^{+ 5.03}$ $138.45_{ - 5.49}^{ + 5.03}$	${8.92}_{- 5.43}^{+ 5.94}$ $8.92_{ - 5.43}^{ + 5.94}$	${15.80}_{- 3.71}^{+ 2.88}$ $15.80_{ - 3.71}^{ + 2.88}$	147.33
Taurus(C2 – L1495)^a	168.91	−16.41	43	${156.77}_{- 5.10}^{+ 6.10}$ $156.77_{ - 5.10}^{ + 6.10}$	${154.55}_{- 2.04}^{+ 1.80}$ $154.55_{ - 2.04}^{ + 1.80}$	${15.11}_{- 8.48}^{+ 3.44}$ $15.11_{ - 8.48}^{ + 3.44}$	${0.67}_{- 0.49}^{+ 0.69}$ $0.67_{ - 0.49}^{ + 0.69}$	151.50
Taurus(D4 – North)^a	172.59	−16.73	92	${146.46}_{- 14.21}^{+ 10.33}$ $146.46_{ - 14.21}^{ + 10.33}$	${158.76}_{- 4.29}^{+ 0.97}$ $158.76_{ - 4.29}^{ + 0.97}$	${12.81}_{- 7.77}^{+ 5.35}$ $12.81_{ - 7.77}^{ + 5.35}$	${19.26}_{- 3.65}^{+ 0.55}$ $19.26_{ - 3.65}^{ + 0.55}$	136.12	132~156
Taurus	166.94	−16.78	43	${143.57}_{- 6.71}^{+ 6.90}$ $143.57_{ - 6.71}^{ + 6.90}$	${139.01}_{- 4.21}^{+ 5.08}$ $139.01_{ - 4.21}^{ + 5.08}$	${10.17}_{- 6.44}^{+ 7.36}$ $10.17_{ - 6.44}^{ + 7.36}$	${1.53}_{- 1.06}^{+ 1.67}$ $1.53_{ - 1.06}^{ + 1.67}$	149.00
Taurus	168.05	−16.83	17	${145.67}_{- 22.37}^{+ 22.88}$ $145.67_{ - 22.37}^{ + 22.88}$	${154.74}_{- 7.80}^{+ 8.71}$ $154.74_{ - 7.80}^{ + 8.71}$	${12.01}_{- 7.45}^{+ 5.70}$ $12.01_{ - 7.45}^{ + 5.70}$	${4.85}_{- 3.53}^{+ 6.65}$ $4.85_{ - 3.53}^{ + 6.65}$
Taurus	165.39	−17.03	73	${151.10}_{- 1.33}^{+ 1.91}$ $151.10_{ - 1.33}^{ + 1.91}$	${151.58}_{- 1.37}^{+ 1.67}$ $151.58_{ - 1.37}^{ + 1.67}$	${1.33}_{- 0.97}^{+ 1.30}$ $1.33_{ - 0.97}^{ + 1.30}$	${0.58}_{- 0.40}^{+ 0.69}$ $0.58_{ - 0.40}^{ + 0.69}$	147.50
Taurus(C5 – L1546)^a	175.00	−17.10	58	${155.82}_{- 3.22}^{+ 3.05}$ $155.82_{ - 3.22}^{ + 3.05}$	${152.16}_{- 1.18}^{+ 1.13}$ $152.16_{ - 1.18}^{ + 1.13}$	${7.59}_{- 5.84}^{+ 7.77}$ $7.59_{ - 5.84}^{ + 7.77}$	${5.91}_{- 0.81}^{+ 0.82}$ $5.91_{ - 0.81}^{ + 0.82}$	151.50	132~156
Taurus	164.33	−17.32	47	${154.61}_{- 9.80}^{+ 9.92}$ $154.61_{ - 9.80}^{ + 9.92}$	${165.16}_{- 11.36}^{+ 6.14}$ $165.16_{ - 11.36}^{ + 6.14}$	${6.78}_{- 4.81}^{+ 6.62}$ $6.78_{ - 4.81}^{ + 6.62}$	${14.54}_{- 6.52}^{+ 3.95}$ $14.54_{ - 6.52}^{ + 3.95}$	147.67
Taurus	162.42	−17.86	35	${149.28}_{- 5.99}^{+ 7.24}$ $149.28_{ - 5.99}^{ + 7.24}$	${143.34}_{- 0.87}^{+ 0.81}$ $143.34_{ - 0.87}^{ + 0.81}$	${7.30}_{- 4.68}^{+ 5.74}$ $7.30_{ - 4.68}^{ + 5.74}$	${9.93}_{- 1.94}^{+ 1.40}$ $9.93_{ - 1.94}^{ + 1.40}$	147.50
Taurus	171.16	−18.03	18	${150.91}_{- 25.53}^{+ 20.09}$ $150.91_{ - 25.53}^{ + 20.09}$	${147.60}_{- 14.17}^{+ 13.75}$ $147.60_{ - 14.17}^{ + 13.75}$	${29.66}_{- 17.79}^{+ 14.58}$ $29.66_{ - 17.79}^{ + 14.58}$	${35.83}_{- 10.28}^{+ 8.94}$ $35.83_{ - 10.28}^{ + 8.94}$	136.00	132~156
Taurus(D3 – South)^a	176.48	−18.08	33	${134.04}_{- 4.86}^{+ 4.25}$ $134.04_{ - 4.86}^{ + 4.25}$	${137.28}_{- 7.58}^{+ 8.30}$ $137.28_{ - 7.58}^{ + 8.30}$	${4.73}_{- 2.87}^{+ 4.33}$ $4.73_{ - 2.87}^{ + 4.33}$	${2.37}_{- 1.66}^{+ 2.37}$ $2.37_{ - 1.66}^{ + 2.37}$	122^b
Taurus	175.58	−18.57	62	${133.63}_{- 7.70}^{+ 7.27}$ $133.63_{ - 7.70}^{ + 7.27}$	${135.77}_{- 6.02}^{+ 5.86}$ $135.77_{ - 6.02}^{ + 5.86}$	${3.60}_{- 2.58}^{+ 3.72}$ $3.60_{ - 2.58}^{ + 3.72}$	${14.82}_{- 6.05}^{+ 3.67}$ $14.82_{ - 6.05}^{ + 3.67}$
Taurus	169.45	−18.98	48	${136.14}_{- 6.58}^{+ 8.22}$ $136.14_{ - 6.58}^{ + 8.22}$	${131.26}_{- 0.64}^{+ 0.72}$ $131.26_{ - 0.64}^{ + 0.72}$	${9.18}_{- 6.23}^{+ 6.41}$ $9.18_{ - 6.23}^{ + 6.41}$	${1.79}_{- 0.67}^{+ 0.54}$ $1.79_{ - 0.67}^{ + 0.54}$	132.80	132~156
Taurus(C1 – L1551)^a	179.22	−20.18	88	${142.18}_{- 2.46}^{+ 3.48}$ $142.18_{ - 2.46}^{ + 3.48}$	${141.35}_{- 5.35}^{+ 5.47}$ $141.35_{ - 5.35}^{ + 5.47}$	${9.13}_{- 3.89}^{+ 5.62}$ $9.13_{ - 3.89}^{ + 5.62}$	${3.18}_{- 2.30}^{+ 3.83}$ $3.18_{ - 2.30}^{ + 3.83}$	145^b
Taurus(D2 – L1558)^a	180.62	−20.18	88	${177.67}_{- 5.11}^{+ 5.44}$ $177.67_{ - 5.11}^{ + 5.44}$	${174.97}_{- 7.03}^{+ 3.18}$ $174.97_{ - 7.03}^{ + 3.18}$	${28.73}_{- 4.76}^{+ 4.55}$ $28.73_{ - 4.76}^{ + 4.55}$	${1.58}_{- 1.11}^{+ 2.10}$ $1.58_{ - 1.11}^{ + 2.10}$	131^b
Orion A	214.38	−17.65	73	${434.13}_{- 5.25}^{+ 5.69}$ $434.13_{ - 5.25}^{ + 5.69}$	${424.59}_{- 4.59}^{+ 55.38}$ $424.59_{ - 4.59}^{ + 55.38}$	${14.32}_{- 5.07}^{+ 3.78}$ $14.32_{ - 5.07}^{ + 3.78}$	${16.87}_{- 7.53}^{+ 2.48}$ $16.87_{ - 7.53}^{ + 2.48}$		420
Orion A	208.51	−18.10	22	${444.46}_{- 9.93}^{+ 12.11}$ $444.46_{ - 9.93}^{ + 12.11}$	${446.63}_{- 6.96}^{+ 7.77}$ $446.63_{ - 6.96}^{ + 7.77}$	${12.19}_{- 8.81}^{+ 10.62}$ $12.19_{ - 8.81}^{ + 10.62}$	${3.36}_{- 2.41}^{+ 3.49}$ $3.36_{ - 2.41}^{ + 3.49}$
Orion A	211.26	−18.16	71	${404.23}_{- 5.54}^{+ 7.70}$ $404.23_{ - 5.54}^{ + 7.70}$	${408.91}_{- 6.01}^{+ 7.50}$ $408.91_{ - 6.01}^{ + 7.50}$	${7.55}_{- 4.71}^{+ 5.49}$ $7.55_{ - 4.71}^{ + 5.49}$	${1.98}_{- 1.41}^{+ 1.79}$ $1.98_{ - 1.41}^{ + 1.79}$	392.20
Orion A	213.05	−18.98	82	${419.31}_{- 1.00}^{+ 0.51}$ $419.31_{ - 1.00}^{ + 0.51}$	${408.01}_{- 0.27}^{+ 0.29}$ $408.01_{ - 0.27}^{ + 0.29}$	${6.08}_{- 1.95}^{+ 1.69}$ $6.08_{ - 1.95}^{ + 1.69}$	${8.52}_{- 0.53}^{+ 0.60}$ $8.52_{ - 0.53}^{ + 0.60}$	398.50
Orion A	214.38	−19.61	36	${419.74}_{- 16.98}^{+ 25.86}$ $419.74_{ - 16.98}^{ + 25.86}$	${415.79}_{- 2.49}^{+ 2.24}$ $415.79_{ - 2.49}^{ + 2.24}$	${24.75}_{- 11.92}^{+ 11.09}$ $24.75_{ - 11.92}^{ + 11.09}$	${8.37}_{- 3.17}^{+ 1.84}$ $8.37_{ - 3.17}^{ + 1.84}$	422.73
Orion A	207.04	−19.88	82	${414.83}_{- 1.89}^{+ 2.38}$ $414.83_{ - 1.89}^{ + 2.38}$	${408.95}_{- 0.29}^{+ 0.24}$ $408.95_{ - 0.29}^{ + 0.24}$	${3.93}_{- 2.36}^{+ 3.04}$ $3.93_{ - 2.36}^{ + 3.04}$	${2.42}_{- 0.20}^{+ 0.17}$ $2.42_{ - 0.20}^{ + 0.17}$	416.78
Orion A	209.21	−19.88	30	${411.03}_{- 9.67}^{+ 6.55}$ $411.03_{ - 9.67}^{ + 6.55}$	${415.63}_{- 9.59}^{+ 3.43}$ $415.63_{ - 9.59}^{ + 3.43}$	${6.40}_{- 4.50}^{+ 6.30}$ $6.40_{ - 4.50}^{ + 6.30}$	${6.15}_{- 4.44}^{+ 4.43}$ $6.15_{ - 4.44}^{ + 4.43}$
Orion A	211.56	−20.04	44	${401.88}_{- 5.28}^{+ 5.25}$ $401.88_{ - 5.28}^{ + 5.25}$	${407.55}_{- 0.55}^{+ 0.60}$ $407.55_{ - 0.55}^{ + 0.60}$	${10.36}_{- 6.34}^{+ 5.67}$ $10.36_{ - 6.34}^{ + 5.67}$	${3.43}_{- 1.31}^{+ 1.04}$ $3.43_{ - 1.31}^{ + 1.04}$	406.10
Orion B	203.91	−11.08	34	${402.74}_{- 3.73}^{+ 3.62}$ $402.74_{ - 3.73}^{ + 3.62}$	${400.04}_{- 0.72}^{+ 0.82}$ $400.04_{ - 0.72}^{ + 0.82}$	${8.39}_{- 4.85}^{+ 4.69}$ $8.39_{ - 4.85}^{ + 4.69}$	${13.71}_{- 1.02}^{+ 0.84}$ $13.71_{ - 1.02}^{ + 0.84}$	401.00	410
Orion B	204.91	−11.85	26	${391.71}_{- 2.87}^{+ 4.19}$ $391.71_{ - 2.87}^{ + 4.19}$	${393.22}_{- 1.06}^{+ 1.02}$ $393.22_{ - 1.06}^{ + 1.02}$	${10.20}_{- 4.50}^{+ 5.14}$ $10.20_{ - 4.50}^{ + 5.14}$	${10.98}_{- 0.90}^{+ 0.95}$ $10.98_{ - 0.90}^{ + 0.95}$	404.07
Orion B	203.20	−11.90	17	${403.57}_{- 4.28}^{+ 3.82}$ $403.57_{ - 4.28}^{ + 3.82}$	${409.01}_{- 3.90}^{+ 0.64}$ $409.01_{ - 3.90}^{ + 0.64}$	${9.32}_{- 5.08}^{+ 7.30}$ $9.32_{ - 5.08}^{ + 7.30}$	${3.41}_{- 1.51}^{+ 3.41}$ $3.41_{ - 1.51}^{ + 3.41}$
Orion B	205.31	−12.51	15	${393.23}_{- 8.82}^{+ 5.08}$ $393.23_{ - 8.82}^{ + 5.08}$	${386.37}_{- 5.26}^{+ 5.17}$ $386.37_{ - 5.26}^{ + 5.17}$	${4.57}_{- 3.33}^{+ 4.62}$ $4.57_{ - 3.33}^{ + 4.62}$	${5.69}_{- 3.90}^{+ 3.34}$ $5.69_{ - 3.90}^{ + 3.34}$	405.22
Orion B	204.61	−13.13	30	${402.29}_{- 3.91}^{+ 4.33}$ $402.29_{ - 3.91}^{ + 4.33}$	${401.10}_{- 0.37}^{+ 0.34}$ $401.10_{ - 0.37}^{ + 0.34}$	${7.11}_{- 4.63}^{+ 6.87}$ $7.11_{ - 4.63}^{ + 6.87}$	${1.18}_{- 0.51}^{+ 0.45}$ $1.18_{ - 0.51}^{ + 0.45}$	405.00
Orion B	206.52	−13.60	57	${404.87}_{- 4.69}^{+ 4.85}$ $404.87_{ - 4.69}^{ + 4.85}$	${409.47}_{- 0.80}^{+ 0.86}$ $409.47_{ - 0.80}^{ + 0.86}$	${16.50}_{- 4.53}^{+ 2.54}$ $16.50_{ - 4.53}^{ + 2.54}$	${19.63}_{- 0.56}^{+ 0.28}$ $19.63_{ - 0.56}^{ + 0.28}$
Orion B	205.81	−14.21	44	${410.47}_{- 5.09}^{+ 5.19}$ $410.47_{ - 5.09}^{ + 5.19}$	${411.17}_{- 0.64}^{+ 0.77}$ $411.17_{ - 0.64}^{ + 0.77}$	${15.44}_{- 4.58}^{+ 3.15}$ $15.44_{ - 4.58}^{ + 3.15}$	${15.94}_{- 0.78}^{+ 0.69}$ $15.94_{ - 0.78}^{ + 0.69}$	403.92
Orion B	205.11	−14.83	42	${422.81}_{- 11.08}^{+ 10.85}$ $422.81_{ - 11.08}^{ + 10.85}$	${421.39}_{- 4.33}^{+ 10.02}$ $421.39_{ - 4.33}^{ + 10.02}$	${4.87}_{- 3.40}^{+ 4.95}$ $4.87_{ - 3.40}^{ + 4.95}$	${4.30}_{- 3.25}^{+ 4.61}$ $4.30_{ - 3.25}^{ + 4.61}$
Orion B	207.34	−15.03	56	${411.05}_{- 2.78}^{+ 2.46}$ $411.05_{ - 2.78}^{ + 2.46}$	${405.57}_{- 0.88}^{+ 1.74}$ $405.57_{ - 0.88}^{ + 1.74}$	${8.85}_{- 2.51}^{+ 2.57}$ $8.85_{ - 2.51}^{ + 2.57}$	${4.85}_{- 1.66}^{+ 0.89}$ $4.85_{ - 1.66}^{ + 0.89}$	404.00
Orion B	205.61	−16.16	56	${432.05}_{- 18.81}^{+ 18.93}$ $432.05_{ - 18.81}^{ + 18.93}$	${428.11}_{- 13.45}^{+ 13.57}$ $428.11_{ - 13.45}^{ + 13.57}$	${9.83}_{- 6.69}^{+ 6.95}$ $9.83_{ - 6.69}^{ + 6.95}$	${3.10}_{- 2.23}^{+ 3.02}$ $3.10_{ - 2.23}^{ + 3.02}$	404.22
Orion B	208.75	−16.27	36	${410.56}_{- 9.01}^{+ 6.95}$ $410.56_{ - 9.01}^{ + 6.95}$	${394.46}_{- 2.08}^{+ 4.72}$ $394.46_{ - 2.08}^{ + 4.72}$	${5.25}_{- 3.81}^{+ 5.93}$ $5.25_{ - 3.81}^{ + 5.93}$	${2.50}_{- 1.39}^{+ 2.96}$ $2.50_{ - 1.39}^{ + 2.96}$	399.58
Orion B	206.32	−16.78	54	${412.96}_{- 8.28}^{+ 10.34}$ $412.96_{ - 8.28}^{ + 10.34}$	${409.70}_{- 0.43}^{+ 0.47}$ $409.70_{ - 0.43}^{ + 0.47}$	${11.93}_{- 5.73}^{+ 5.04}$ $11.93_{ - 5.73}^{ + 5.04}$	${4.08}_{- 0.42}^{+ 0.34}$ $4.08_{ - 0.42}^{ + 0.34}$	403.00

Notes. (1) Names of molecular cloud regions. (2) and (3) Galactic longitude and latitude of the sightline center. (4) Number of stars within the sightline. (5) and (7) Distances and sizes derived from EW₆₆₁₄. (6) and (8) Distances and sizes derived from E(BP-RP). (9) Distances from Z21. (10) Distances from C23.

a: Positions of molecular clouds from Zucker et al. (2022).

b: Distances provided by Zucker et al. (2022).

c: Full table available at: https://zenodo.org/records/15294371.

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