| Line | Frequency | Uncert. | Ref. |
| (MHz) | (kHz) | ||
| C18O(J=1-0) | 109782.172 | 3 | (1) |
| C18O(J=2-1) | 219560.354 | 1 | (2) |
| C17O( J, F=1, 7/2-0, 5/2) | 112358.990 | 1 | (3) |
| C17O( J, F=2, 9/2-1, 7/2) | 224714.214 | 1 | (3) |
| CS(J=2-1) | 97980.953 | 1 | (4) |
| CS(J=3-2) | 146969.026 | 1 | (4) |
| C34S(J=2-1) | 96412.952 | 1 | (4) |
| C34S(J=3-2) | 144617.101 | 1 | (4) |
| NH3( JKF1F=1110.5-1111.5) | 23694.501 | 0.1 | (5) |
| N2H+(JF1F=101-021) | 93176.258 | 10 | (6) |
| N2H+(JF1F=344-233) | 279511.811 | 6 | (7) |
| References: (1) C. Gottlieb, priv. comm., (2) Müller et al. (2001), (3) Cazzoli et al. (2002), (4) Gottlieb et al. (2003), (5) Kukolich (1967), (6) Lee et al. (2001), astronomical, (7) Caselli et al. (2002c), astronomical. |