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Table 2
Typical properties of the south-western edge of Orion B.
| Parameter | Value | Notes |
|
|
||
| Distance | 400 pc | 1′′ = 2 mpc |
| Systemic velocity | 10.5 km s-1 | LSR, radio convention |
| Projection center | 05h40m54.270s,−02°28′00.00′′ | α,δ(J2000), mane of the Horsehead |
| Offset range and field of view | [−5.2′, + 43.3′ ] × [−19.5′,45.3′] | 49′ × 65′ or 5.6 × 7.5 pc |
|
0−61−288 K km s-1 | in [−2, + 18 ] km s-1 |
|
0.7−4.7−222 mag |
|
|
16−26−99 K | |
|
4−45−36 000 | Inter-Stellar Radiation Field (Habing 1968) |
| CO-traced mass | 11 000 M⊙ | Standard XCO and helium dealt with |
| Dust-traced mass | 3900 M⊙ | Standard  and H i gas negligible |
| Virial traced mass | Between 6200 and 9500 M⊙ | Depending on the assumed density radial profile |
| Imaged surface | 43 pc2 | =S |
| Typical volume | 280 pc3 | =S3/2 |
| CO-traced mean column density | 260 M⊙ pc-2 | 12 × 1021 H2 cm-2 | Standard XCO and helium dealt with |
| Dust-traced mean column density | 92 M⊙ pc-2 | 4 × 1021 H2 cm-2 | Standard and H i gas negligible |
| CO-traced mean volume density | 40 M⊙ pc-3 | 590 H2 cm-3 | Standard XCO and helium dealt with |
| Dust-traced mean volume density | 14 M⊙ pc-3 | 210 H2 cm-3 | Standard and H i gas negligible |
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