Table 1
Properties of the eleven B stars in the field of NGC 2264 and comparison to the cluster position and proper motions (Kharchenko 2001).
| # | Name | Mon-ID | RA [2000.0] | Dec [2000.0] | V | sp | pmRA | pmDec | Membership | ||
| [hh:mm:ss] | [dd:mm:ss] | [mag] | [SIMBAD] | [mas/yr] | [mas/yr] | prob. | Ref. | CSI2264 | |||
|
|
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| 1 | HD 47469 | Mon-024786 | 06:39:11.172 | +09:38:45.47 | 7.80 | O/B2 | −3.4 ± 1.9 | −1.2 ± 1.9 | – | – | 0 |
| 2 | HD 48012 | Mon-000030 | 06:40:51.146 | +10:01:43.93 | 8.81 | B6/9 | −0.6 ± 1.1 | −4.2 ± 1.2 | – | – | 1 |
| 3 | HD 261810 | Mon-000523 | 06:40:43.227 | +09:46:01.71 | 9.02 | B1 | 0.0 ± 1.9 | −4.9 ± 1.9 | 74% | 1, 2 | 1 |
| 4 | HD 261878 | Mon-005579 | 06:40:51.558 | +09:51:49.39 | 9.08 | B6 | −0.1 ± 1.6 | −2.5 ± 1.5 | 94% | 1 | 2 |
| 5 | HD 47777 | Mon-000248 | 06:40:42.293 | +09:39:21.31 | 7.93 | B3 | −0.4 ± 1.9 | −5.5 ± 1.9 | 98% | 1 | 1 |
| 6 | HD 47887 | Mon-000303 | 06:41:09.602 | +09:27:57.54 | 7.14 | B2 | 1.5 ± 1.5 | −1.9 ± 1.5 | 7% | 1 | 1 |
| 7 | HD 261903 | Mon-000193 | 06:41:02.886 | +09:27:23.49 | 9.10 | K1?∗ | −0.1 ± 2.0 | −3.9 ± 1.9 | 25% | 1 | 1 |
| 8 | HD 261938 | Mon-000270 | 06:41:01.874 | +09:52:47.96 | 8.97 | B3 | −7.5 ± 2.0 | −12.9 ± 1.8 | 97% | 1, 2 | 1 |
| 9 | NGC 2264 137 | Mon-000902 | 06:41:00.03 | +09:52:17.9 | 9.88 | A1 | −4.0 ± 5.0 | −3.4 ± 1.0 | 96% | 1, 2 | 1 |
| 10 | HD 261054 | Mon-052766 | 06:38:09.175 | +09:29:05.24 | 9.78 | O/B2 | +2.2 ± 2.6 | +0.2 ± 2.5 | – | – | 0 |
| 11 | HD 47961 | Mon-000068 | 06:41:27.304 | +09:51:14.41 | 7.47 | B2 | −1.3 ± 1.4 | −5.2 ± 1.3 | 96% | 1, 2 | 1 |
|
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| NGC 2264 | 06:40:58.0 | +09:53:42.0 | −2.70 ± 0.25 | −3.50 ± 0.26 | |||||||
Notes. Column headers are a running number (#), identifier (Name), CSI2264 project identifier (Mon-ID), right ascension and declination to the epoch of 2000.0 (RA, Dec), V magnitude, spectral type as listed by SIMBAD (sp), proper motions in RA and Dec (pmRA, pmDec) taken from the TYCHO2-Catalog (Høg et al. 2000) except for NGC 2264 137 which is taken from the ASCC-2.5 V3 Catalog (Kharchenko 2001), membership probability (prob.) as given in the literature listed in the column Ref. where Reference # 1: Vasilevskis et al. (1965); reference # 2: Flaccomio et al. (2000) and membership as provided from the CSI2264 project through the NASA/IPAC Infrared Science Archive1 (CSI2264), where 0 – no membership information, 1 – very likely cluster member, 2 – possible cluster member. Cluster proper motion values are taken from Kharchenko (2001).
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